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Gyasi RM, Quansah N, Boateng PA, Akomeah E, Yakubu AF, Ahiabli PA, Aikins E, Owusu-Sarpong OJ, Dumbe Y, Nimoh M, Phillips DR, Hajek A. Meeting the WHO Physical Activity Guidelines is Associated With Lower Odds of Depression in Older Adults: Potential Psychosomatic Mechanisms. Am J Geriatr Psychiatry 2024; 32:1105-1118. [PMID: 38641509 DOI: 10.1016/j.jagp.2024.04.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 03/31/2024] [Accepted: 04/01/2024] [Indexed: 04/21/2024]
Abstract
OBJECTIVES Limited data exist on the association between physical activity (PA) and depression in older adults from low- and middle-income countries (LMICs). In this study, we examine the association between meeting the World Health Organization (WHO) PA guidelines and depression in adults aged ≥50 years in Ghana and investigate the psychosomatic factors explaining this association. METHODS Cross-sectional data from the Aging, Health, Psychological Well-being, and Health-seeking Behavior Study in Ghana (2016-18) were analyzed. Depression was assessed with the Center for Epidemiological Studies Depression Scale (CES-D-10). PA was assessed using the International Physical Activity Questionnaire Short Form (IPAQ-SF). Multivariable logistic regression and Hayes PROCESS macro with bootstrapping mediation analyses were performed to evaluate the hypothesized associations. RESULTS The study included 1201 individuals (mean [SD] age 66.1 [11.9] years; 63.3% women). The prevalence of meeting PA guidelines and depression was 36.7% and 29.5%, respectively. Meeting the WHO-recommended PA guidelines was associated with a 16% lower rate of developing depression even after adjusting for potential confounders (OR = 0.84, p <0.001). This association was much stronger among men and those aged 50-64 years. Loneliness, social isolation, sleep problems, functional limitations, and pain characteristics largely mediated the association of PA with depression. CONCLUSIONS PA was negatively associated with depression among older adults in Ghana, and psychosocial and physical factors partially explained the association. The promotion of PA in old age may aid in the prevention of depression, especially in men and those aged 50-64 years. Longitudinal data may confirm our findings.
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Affiliation(s)
- Razak M Gyasi
- African Population and Health Research Center (RMG), Nairobi, Kenya; National Centre for Naturopathic Medicine, Faculty of Health (RMG), Southern Cross University, Lismore, New South Wales, Australia.
| | - Nicholas Quansah
- Department of Geography and Rural Development (NQ, PAB, EA, AFY, PAA, EA, OJOS), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Paul Antwi Boateng
- Department of Geography and Rural Development (NQ, PAB, EA, AFY, PAA, EA, OJOS), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Eric Akomeah
- Department of Geography and Rural Development (NQ, PAB, EA, AFY, PAA, EA, OJOS), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Abdul-Fatawu Yakubu
- Department of Geography and Rural Development (NQ, PAB, EA, AFY, PAA, EA, OJOS), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Patience Aku Ahiabli
- Department of Geography and Rural Development (NQ, PAB, EA, AFY, PAA, EA, OJOS), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Emelia Aikins
- Department of Geography and Rural Development (NQ, PAB, EA, AFY, PAA, EA, OJOS), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Obed Jones Owusu-Sarpong
- Department of Geography and Rural Development (NQ, PAB, EA, AFY, PAA, EA, OJOS), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Yunus Dumbe
- Department of Religious Studies (YD), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - Michael Nimoh
- Department of History and Political Studies (MN), Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
| | - David R Phillips
- Department of Sociology and Social Policy (DRP), Lingnan University, Tuen Mun, New Territories, Hong Kong
| | - André Hajek
- Department of Health Economics and Health Services Research (AH), University Medical Center Hamburg-Eppendorf, Hamburg Center for Health Economics, Hamburg, Germany
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Fuentes JJ, Mayans J, Guarro M, Canosa I, Mestre-Pintó JI, Fonseca F, Torrens M. Peripheral endocannabinoids in major depressive disorder and alcohol use disorder: a systematic review. BMC Psychiatry 2024; 24:551. [PMID: 39118031 PMCID: PMC11308641 DOI: 10.1186/s12888-024-05986-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 07/25/2024] [Indexed: 08/10/2024] Open
Abstract
BACKGROUND Major Depressive Disorder (MDD) and Alcohol Use Disorder (AUD) are two high-prevalent conditions where the Endocannabinoid system (ECS) is believed to play an important role. The ECS regulates how different neurotransmitters interact in both disorders, which is crucial for controlling emotions and responses to stress and reward stimuli. Measuring peripheral endocannabinoids (eCBs) in human serum and plasma can help overcome the limitations of detecting endocannabinoid levels in the brain. This systematic review aims to identify levels of peripheral eCBs in patients with MDD and/or AUD and find eCBs to use as diagnostic, prognostic biomarkers, and potential therapeutic targets. METHODS We conducted a systematic literature search according to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines from the earliest manuscript until October 22, 2023, in three electronic databases. We included studies of human adults who had a current diagnosis of AUD and/or MDD and evaluated plasma or serum endocannabinoids. We carefully considered known variables that may affect endocannabinoid levels. RESULTS We included 17 articles in this systematic review, which measured peripheral eCBs in 170 AUD and 359 MDD patients. Stressors increase peripheral 2-arachidonyl-glycerol (2-AG) concentrations, and 2-AG may be a particular feature of depression severity and chronicity. Anxiety symptoms are negatively correlated with anandamide (AEA) concentrations, and AEA significantly increases during early abstinence in AUD. Studies suggest a negative correlation between Oleoylethanolamide (OEA) and length of abstinence in AUD patients. They also show a significant negative correlation between peripheral levels of AEA and OEA and fatty acid amide hydrolase (FAAH) activity. Eicosapentaenoylethanolamide (EPEA) is correlated to clinical remission rates in depression. Included studies show known variables such as gender, chronicity, symptom severity, comorbid psychiatric symptoms, length of abstinence in the case of AUD, and stress-inducibility that can affect peripheral eCBs. CONCLUSIONS This systematic review highlights the important role that the ECS plays in MDD and AUD. Peripheral eCBs appear to be useful biomarkers for these disorders, and further research may identify potential therapeutic targets. Using accessible biological samples such as blood in well-designed clinical studies is crucial to develop novel therapies for these disorders.
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Affiliation(s)
- J J Fuentes
- Mental Health Institute, Hospital del Mar, Barcelona, Spain
- Department of Psychiatry and Forensic Medicine, Universitat Autònoma de Barcelona (UAB), Cerdanyola del Vallés, Spain
| | - J Mayans
- Department of Psychiatry, Parc Sanitari Sant Joan de Déu, Sant Boi de Llobregat, Spain
| | - M Guarro
- Mental Health Institute, Hospital del Mar, Barcelona, Spain
| | - I Canosa
- Mental Health Institute, Hospital del Mar, Barcelona, Spain
- Hospital del Mar Research Institute, Barcelona, Spain
| | - J I Mestre-Pintó
- Hospital del Mar Research Institute, Barcelona, Spain
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - F Fonseca
- Mental Health Institute, Hospital del Mar, Barcelona, Spain.
- Hospital del Mar Research Institute, Barcelona, Spain.
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Barcelona, Spain.
| | - M Torrens
- Mental Health Institute, Hospital del Mar, Barcelona, Spain
- Hospital del Mar Research Institute, Barcelona, Spain
- Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Barcelona, Spain
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Lai Q, Li W, He X, Wang H, He Q, Hao C, Deng Z. Leisure-time physical activity is associated with depressive symptoms in cancer patients: Data from the NHANES 2007-2018. J Affect Disord 2024; 358:35-41. [PMID: 38705529 DOI: 10.1016/j.jad.2024.05.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 04/08/2024] [Accepted: 05/02/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND Cancer patients have a higher risk of depression and are associated with severe adverse prognosis. The relationship between leisure-time physical activity (LTPA) and depressive symptoms in cancer patients is currently unclear. Therefore, our study mainly explores the potential association between LTPA and the weekly cumulative time of LTPA with depressive symptoms in cancer patients. METHODS We included and analyzed 3368 cancer patients (aged >20 years) from the National Health and Nutrition Examination Survey (NHANES) of the United States from 1999 to 2018. The LTPA score was evaluated through a self-report questionnaire, while depressive symptoms were evaluated through the Health Questionnaire-9 (PHQ-9). Multiple logistic regression analysis was used to explore the relationship between LTPA duration and the occurrence of cancer-related depressiive symptoms. Linear correlation was studied using the restricted cubic spline method. RESULTS According to a fully adjusted multivariate logistic regression model with confounding variables, the odds ratio (OR) between LTPA and depressive symptoms in cancer patients in this study was 0.59 (95 % confidence interval = 0.39, 0.92; P = 0.02). When the LTPA level was ≥300 min/week, the incidence of depressive symptoms was reduced by 59 % (OR = 0.41, 95 % CI = 0.21, 0.83). In addition, the cubic spline method was used to obtain a linear negative correlation between LTPA duration and tumor depressive symptoms. CONCLUSION LTPA was negatively correlated with cancer-related depressive symptoms, and the cumulative time of LTPA/week was linearly correlated with depressive symptoms. The slope of the benefit curve changed significantly when the cumulative time of LTPA reached 600 min per week, suggesting that appropriately increasing LTPA had significant benefits on mental health of cancer patients.
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Affiliation(s)
- Qun Lai
- Department of Hematology and Oncology, Third People's Hospital of Zigong, Zigong, Sichuan 643000, China
| | - Wenqiang Li
- Department of Pulmonary and Critical Care Medicine, First People's Hospital of Zigong, 42 Shangyihao Yizhi Street, Zigong, Sichuan 643000, China
| | - Xiaoyu He
- Department of Pulmonary and Critical Care Medicine, First People's Hospital of Zigong, 42 Shangyihao Yizhi Street, Zigong, Sichuan 643000, China; North Sichuan Medical College, Nanchong, Sichuan 637100, China
| | - Hongping Wang
- Department of Neurosurgery, Fourth People's Hospital of Zigong, Zigong, Sichuan 643000, China
| | - Qian He
- Department of Obstetrics and Gynecology, West China Second Hospital of Sichuan University, Chengdu, Sichuan 610000, China
| | - Chengluo Hao
- Department of Hematology and Oncology, Third People's Hospital of Zigong, Zigong, Sichuan 643000, China.
| | - Zhiping Deng
- Department of Pulmonary and Critical Care Medicine, First People's Hospital of Zigong, 42 Shangyihao Yizhi Street, Zigong, Sichuan 643000, China.
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Schaumberg K, Pictor L, Frank M. Adaptive and Maladaptive Exercise in Eating Disorders. Curr Top Behav Neurosci 2024. [PMID: 39042250 DOI: 10.1007/7854_2024_499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/24/2024]
Abstract
While exercise is generally associated with positive health outcomes, in the context of eating disorders, exercise has high potential to become maladaptive. Maladaptive exercise is compelled or compulsive in nature for the purposes of weight and shape control or to obtain/avoid other eating disorder-relevant consequences. A transdiagnostic eating disorder feature with moderate-to-high prevalence across restrictive- and bulimic-spectrum eating disorders, maladaptive exercise is often associated with negative mental and physical health sequalae. Several proposed threat- and reward-related biobehavioral mechanisms may initiate or perpetuate maladaptive exercise. While exercise is generally contraindicated during periods of acute medical concern, adaptive forms of exercise are also present among those with eating disorders, and facilitation of adaptive exercise has potential to promote physical and mental health benefits during eating disorder recovery. Detailed assessment and targeted interventions are needed to address the clinical conundrum of how and when to integrate exercise into eating disorder treatment.
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Affiliation(s)
| | - Lauren Pictor
- Department of Psychiatry, University of Wisconsin, Madison, WI, USA
| | - Max Frank
- Department of Psychiatry, University of Wisconsin, Madison, WI, USA
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Boruch A, Branchaw G, O'Connor PJ, Cook DB. Physical Activity and Fatigue Symptoms: Neurotypical Adults and People with Chronic Multisymptom Illnesses. Curr Top Behav Neurosci 2024. [PMID: 39037494 DOI: 10.1007/7854_2024_502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
For neurotypical adults, a single bout of low-to-moderate intensity physical activity usually transiently improves feelings of energy. Similar bouts of exercise have the opposite effect of increased feelings of fatigue when performed by samples with chronic multisymptom illnesses (CMIs) such as Long-COVID, Gulf War Illness (GWI), or Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). The short-term adoption of regular moderate intensity physical activity (typical experiments are 1 to 6 months) among neurotypical adults results in small-to-moderate improvements in self-reported feelings of fatigue, energy, and vitality. Small improvements in these feelings, or no change at all, occur for CMIs, but limited data precludes strong conclusions. The mechanisms of exercise effects on fatigue, whether acute or chronic, are poorly understood but likely involve multiple neural circuits and associated transmitters. For CMIs, the mechanisms of acute worsening of fatigue with exercise may be driven by the yet unknown pathophysiological mechanisms of the disease (perhaps involving brain, immune and autonomic system dysfunction, and their interactions). Likewise, fatigue improvements may depend on whether chronic physical activity is a disease-modifying treatment.
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Affiliation(s)
- Alex Boruch
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, WI, USA
- Department of Kinesiology, University of Wisconsin-Madison, Madison, WI, USA
| | - Grace Branchaw
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, WI, USA
- Department of Kinesiology, University of Wisconsin-Madison, Madison, WI, USA
| | | | - Dane B Cook
- Research Service, William S. Middleton Memorial Veterans Hospital, Madison, WI, USA.
- Department of Kinesiology, University of Wisconsin-Madison, Madison, WI, USA.
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Venkatesan T, Hillard CJ, Ayer L, Arumugam S, Culp S, Vyas M, Gofar K, Petrova A, Palsson OS. Acute and Long-Term Effects of App-Delivered Heartfulness Meditation on Psychological Outcomes and the Endocannabinoid Signaling System in Cyclic Vomiting Syndrome. Clin Transl Gastroenterol 2024; 15:e00711. [PMID: 38713142 PMCID: PMC11272346 DOI: 10.14309/ctg.0000000000000711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 05/08/2024] Open
Abstract
INTRODUCTION Cyclic vomiting syndrome (CVS) is a disorder of gut-brain interaction often triggered by stress. Interventions such as meditation may improve psychological outcomes and health-related quality of life (HRQoL), but their efficacy and the underlying mechanism are unknown. METHODS We conducted a 6-week single-arm pilot study to assess the effects of heartfulness meditation (HFM) in CVS using a custom-designed meditation app. Primary outcomes included state and trait anxiety and mood state changes pre vs post-meditation, and secondary outcomes were psychological distress, coping, sleep quality, and HRQoL at baseline and at weeks 3 and 6. Serum concentrations of endocannabinoids N -arachidonylethanolamine and 2-arachidonoylglycerol and related lipids were measured pre- and post-HFM at baseline and week 6. RESULTS In 30 treatment completers, there was a significant improvement in state anxiety ( P < 0.001), total mood disturbance ( P < 0.001), and other mood states (all P values < 0.05) across the 3 time points. Trait anxiety was also improved at week 6. There was a significant improvement in psychological distress (Global Severity Index), sleep quality (daytime dysfunction), coping (using religion/spirituality), and HRQoL (mental and physical) across the 3 time points (all P < 0.05). Significant increases in N -arachidonylethanolamine and related lipids N -oleoylethanolamine and palmitoylethanolamide post vs pre-HFM were observed at week 6 ( P < 0.001, 0.002, 0.003, respectively). No adverse effects were noted. DISCUSSION App-delivered HFM is feasible, safe, and effective and improves psychological outcomes and augments endocannabinoids. This provides insight into the mechanism underlying HFM and has potential for widespread use as a digital therapeutic in CVS and other disorder of gut-brain interaction.
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Affiliation(s)
- Thangam Venkatesan
- Section of Neurogastroenterology and Motility, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | | | - Lina Ayer
- University of Michigan, Novi, Michigan, USA
| | - Saranya Arumugam
- Section of Neurogastroenterology and Motility, Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Stacey Culp
- Division of Bioinformatics, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Mahima Vyas
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Kebire Gofar
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Ana Petrova
- Division of Gastroenterology, Hepatology and Nutrition, Department of Internal Medicine, The Ohio State University College of Medicine, Columbus, Ohio, USA
| | - Olafur S. Palsson
- Division of Gastroenterology and Hepatology, Centre for Functional GI and Motility Disorders, The University of North Carolina, Chapel Hill, North Carolina, USA
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Weinstein AA, van Aert RCM, Donovan K, Muskens L, Kop WJ. Affective Responses to Acute Exercise: A Meta-Analysis of the Potential Beneficial Effects of a Single Bout of Exercise on General Mood, Anxiety, and Depressive Symptoms. Psychosom Med 2024; 86:486-497. [PMID: 38787545 DOI: 10.1097/psy.0000000000001321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
OBJECTIVE Acute exercise elicits various biobehavioral and psychological responses, but results are mixed with regard to the magnitude of exercise-induced affective reactions. This meta-analysis examines the magnitude of general mood state, anxiety, and depressive symptom responses to acute exercise while exploring exercise protocol characteristics and background health behaviors that may play a role in the affective response. METHODS A total of 2770 articles were identified from a MEDLINE/PubMed search and an additional 133 articles from reviews of reference sections. Studies had to have measured general mood before the acute exercise bout and within 30 minutes after exercise completion. Effect sizes were estimated using Hedges' g , with larger values indicating improvement in the outcome measure. RESULTS A total of 103 studies were included presenting data from 4671 participants. General mood state improved from preexercise to postexercise ( g = 0.336, 95% confidence interval [CI] = 0.234-0.439). Anxiety ( g = 0.497, 95% CI = 0.263-0.730) and depressive symptoms ( g = 0.407, 95% CI = 0.249-0.564) also improved with exercise. There was substantial and statistically significant heterogeneity in each of these meta-analyses. This heterogeneity was not explained by differences in participants' health status. Meta-regression analyses with potential moderators (intensity of exercise, mode of exercise, usual physical activity level, or weight status of participants) also did not reduce the heterogeneity. CONCLUSION This meta-analysis shows significantly improved general mood, decreased anxiety, and lower depressive symptoms in response to an acute bout of exercise. There was substantial heterogeneity in the magnitude of the effect sizes, indicating that additional research is needed to identify determinants of a positive affective response to acute exercise.
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Affiliation(s)
- Ali A Weinstein
- From the Department of Global and Community Health (Weinstein, Donovan), George Mason University, Fairfax, Virginia; and Departments of Methodology and Statistics (van Aert), and Medical and Clinical Psychology (Muskens, Kop), Center of Research on Psychological Disorders and Somatic Diseases (CoRPS), Tilburg University, Tilburg, the Netherlands
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Gupta S, Bharatha A, Cohall D, Rahman S, Haque M, Azim Majumder MA. Aerobic Exercise and Endocannabinoids: A Narrative Review of Stress Regulation and Brain Reward Systems. Cureus 2024; 16:e55468. [PMID: 38440201 PMCID: PMC10910469 DOI: 10.7759/cureus.55468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/04/2024] [Indexed: 03/06/2024] Open
Abstract
Aerobic exercise is a widely adopted practice, not solely for enhancing fitness and reducing the risk of various diseases but also for its ability to uplift mood and aid in addressing depression and anxiety disorders. Within the scope of this narrative review, we seek to consolidate current insights into the endocannabinoid-mediated regulation of stress and the brain's reward mechanism resulting from engaging in aerobic exercise. A comprehensive search was conducted across Medline, SPORTDiscus, Pubmed, and Scopus, encompassing data available until November 30, 2023. This review indicates that a bout of aerobic exercise, particularly of moderate intensity, markedly augments circulating levels of endocannabinoids - N-arachidonoyl-ethanolamine (AEA) and 2-acylglycerol (2-AG), that significantly contributes to mood elevation and reducing stress in healthy individuals. The current understanding of how aerobic exercise impacts mental health and mood improvement is still unclear. Moderate and high-intensity aerobic exercise modulates stress through a negative feedback mechanism targeting both the hypothalamus-pituitary-adrenal (HPA) axis and the sympathetic nervous system, thereby facilitating stress regulation crucial role in endocannabinoid synthesis, ultimately culminating in the orchestration of negative feedback across multiple tiers of the HPA axis, coupled with its influence over cortical and subcortical brain structures. The endocannabinoid has been observed to govern the release of neurotransmitters from diverse neuronal populations, implying a universal mechanism that fine-tunes neuronal activity and consequently modulates both emotional and stress-related responses. Endocannabinoids further assume a pivotal function within brain reward mechanisms, primarily mediated by CB1 receptors distributed across diverse cerebral centers. Notably, these endocannabinoids partake in natural reward processes, as exemplified in aerobic exercise, by synergizing with the dopaminergic reward system. The genesis of this reward pathway can be traced to the ventral tegmental area, with dopamine neurons predominantly projecting to the nucleus accumbens, thereby inciting dopamine release in response to rewarding stimuli.
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Affiliation(s)
- Subir Gupta
- Physiology, Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Bridgetown, BRB
| | - Ambadasu Bharatha
- Pharmacology, Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Bridgetown, BRB
| | - Damian Cohall
- Pharmacology, Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Bridgetown, BRB
| | - Sayeeda Rahman
- Pharmacology, School of Medicine, American University of Integrative Sciences, Bridgetown, BRB
| | - Mainul Haque
- Pharmacology and Therapeutics, Karnavati Scientific Research Center (KSRC) School of Dentistry, Karnavati University, Gandhinagar, IND
- Pharmacology and Therapeutics, National Defence University of Malaysia, Kuala Lumpur, MYS
| | - Md Anwarul Azim Majumder
- Medical Education, Faculty of Medical Sciences, The University of the West Indies, Cave Hill Campus, Bridgetown, BRB
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Li X, Wang P, Jiang Y, Yang Y, Wang F, Yan F, Li M, Peng W, Wang Y. Physical activity and health-related quality of life in older adults: depression as a mediator. BMC Geriatr 2024; 24:26. [PMID: 38182991 PMCID: PMC10770982 DOI: 10.1186/s12877-023-04452-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 11/02/2023] [Indexed: 01/07/2024] Open
Abstract
BACKGROUND Physical activity(PA) is associated with health-related quality of life (HRQoL) among older adults, and both are associated with mood, such as depression. However, the indirect effects of PA on HRQoL in older adults have not been clearly established. This study explained how different types and intensities of PA were associated with HRQoL while considering the effects of depression in older adults. METHODS A cross-sectional study was conducted with 7,518 community-dwelling older adults aged 60 years and older. PA (leisure-time, household, and work-related), depression, and HRQoL were measured using the Physical Activity Scale for the Elderly (PASE), the 30-item Geriatric Depression Scale (GDS-30), and the 36-Item Short-Form Health Survey (SF-36), respectively. Information on age, gender, education, monthly income, activities of daily living, smoking, and alcohol drinking was also collected. Regression analysis was used to explore the relationship between PA, depression and HRQoL, and a mediation effect test process was used to verify the mediating mechanism of the depression on this relationship. RESULTS The study showed that after adjusting for a set of covariates, SF-36 Physical Component Summary (PCS) scores were negatively associated with depression (B = -2.046, 95% CI [2.584, -1.509]) and positively with PA (p < 0.001). Similarly, SF-36 Mental Component Summary (MCS) scores were negatively associated with depression (B = -11.657, 95% CI [-12.190, -11.124]). In mediation analyses, we found that depression partially mediated the relationship between different types and intensities PA and PCS (moderate leisure-time PA: B = 0.223, 95%CI [0.153,0.293], P < 0.001; vigorous leisure-time PA: B = 0.323, 95%CI [0.232,0.413], P < 0.001; moderate household PA: B = 0.092, 95%CI [0.045,0.139], P < 0.001; vigorous household PA: B = 0.137, 95%CI [0.085,0.190], P < 0.001; work-related PA: B = 0.193, 95%CI [0.658,0.190], P < 0.001) and MCS (moderate leisure-time PA: B = 1.243, 95%CI [1.008,1.479], P < 0.001; vigorous leisure-time PA: B = 1.800, 95%CI [1.585,2.015], P < 0.001; moderate household PA: B = 0.496, 95%CI [0.274,0.718], P < 0.001; vigorous household PA: B = 0.742, 95%CI [0.521,0.963], P < 0.001; work-related PA: B = 1.026, 95%CI [0.819,1.234], P < 0.001). CONCLUSIONS This study suggested that leisure-time, household, and work-related PA were negatively associated with depression, while positively affecting HRQoL in Chinese older adults. The relationships between different types and intensities of PA and HRQoL were mediated by depression. Interventions aimed at promoting purposeful exercise and different types of PA may have mental health benefits. It is recommended that geriatric health managers and healthcare planners prioritize interventions to help improve PA intensities, alleviate depressive symptoms to promote beneficial effects on HRQoL in older adults.
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Affiliation(s)
- Xiuxiu Li
- School of Public Health, Fudan University, Shanghai, China
- NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China
| | - Pengfei Wang
- School of Public Health, Fudan University, Shanghai, China
- NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China
| | - Yihua Jiang
- Minhang District Mental Health Center of Shanghai, Fudan University, Shanghai, China
| | - Yinghua Yang
- Clinical Laboratory Center in Shanghai, Shanghai, China
| | - Feng Wang
- Minhang District Mental Health Center of Shanghai, Fudan University, Shanghai, China
| | - Fei Yan
- School of Public Health, Fudan University, Shanghai, China
| | - Ming Li
- Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China.
| | - Wenjia Peng
- School of Public Health, Fudan University, Shanghai, China.
| | - Ying Wang
- School of Public Health, Fudan University, Shanghai, China.
- NHC Key Laboratory of Health Technology Assessment, Fudan University, Shanghai, China.
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Zhou Y, Li C, Wang W, Ding L. Large-scale data reveal disparate associations between leisure time physical activity patterns and mental health. COMMUNICATIONS MEDICINE 2023; 3:175. [PMID: 38129660 PMCID: PMC10739930 DOI: 10.1038/s43856-023-00399-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 11/03/2023] [Indexed: 12/23/2023] Open
Abstract
BACKGROUND Leisure time physical activity (LTPA) is known to be associated with a lower risk for mental health burden, while whether the underlying mechanisms vary across populations is unknown. We aimed to explore the disparate associations between LTPA and mental health based on large-scale data. METHODS In this study, we analyzed data including 711,759 individuals aged 15 years or above from the latest four rounds (2003, 2008, 2013, and 2018) of the National Health Service Survey (NHSS) in China. We used multiple logistic regression models adjusted for potential confounders to investigate associations between LTPA and mental health in the total population and subgroups by measuring a diverse set of activity frequencies, intensities, and types. To examine the dose-response associations between total activity volume and mental health, we conducted restricted cubic splines to investigate possible nonlinearity. RESULTS LTPA was associated with remarkably lower self-reported mental health burden (OR 0.56, 95% CI 0.54-0.58). The dose-response relationship between total activity volume and mental health was highly nonlinear (p < 0.001), presenting L-shaped with first 1200 metabolic equivalents of task (METs)-min/week for significant risk reduction (OR 0.58, 95% CI 0.56-0.60). Notably, merely exercising 3-5 times per week with moderate swimming was significantly associated with lower mental health burden among younger people, while the association was strongly large in older adults aged 60 years or above doing 55-min moderate apparatus exercise at least six times a week. CONCLUSIONS In a large Chinese sample, LTPA was meaningfully and disparately associated with mental health burden across different people. Policy targeted at prompting activity may be effective for reducing mental health burden, but importantly, tailored strategies are needed based on population contexts.
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Affiliation(s)
- Ying Zhou
- Center for Smart and Healthy Buildings, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China
| | - Chenshuang Li
- Center for Smart and Healthy Buildings, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China
| | - Wei Wang
- Center for Smart and Healthy Buildings, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China.
- Department of Neurology, Tongji Hospital, Huazhong University of Science and Technology, 430030, Wuhan, Hubei, China.
| | - Lieyun Ding
- Center for Smart and Healthy Buildings, Huazhong University of Science and Technology, 430074, Wuhan, Hubei, China.
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Zhang MZ, Shi JX, Li H, Chen R, Zheng MB, Yan LJ, Wu NJ, He QQ. The impact of educational lifestyle intervention on body weight and psychological health among overweight/obese patients with severe mental disorders. J Affect Disord 2023; 343:71-76. [PMID: 37741469 DOI: 10.1016/j.jad.2023.09.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 08/29/2023] [Accepted: 09/18/2023] [Indexed: 09/25/2023]
Abstract
BACKGROUND There was a high prevalence of overweight/obesity among patients with severe mental disorders (SMD). However, studies on the lifestyle-based interventions in patients with SMD are limited. OBJECTIVE To examine the effects of an educational lifestyle intervention on body weight and psychological health among Chinese community-dwelling overweight/obese patients with SMD. METHODS Community-dwelling overweight/obese patients with SMD was recruited from Shenzhen, China in October 2020. They were randomly allocated into intervention group (IG) and control group (CG). Participants in IG received a 12-month educational lifestyle intervention, while the CG was exposed to routine care. A generalized estimating equation model was used to assess the effect of the intervention over time. RESULTS A total of 176 subjects (88 in IG and 88 in CG) aged 42.2 ± 10.9 years were included in this study. After adjusting for potential confounders, body weight (p = 0.001), body mass index (BMI, p = 0.001), and waist circumference (p = 0.027) in IG significantly decreased compared with CG after 12 months. Besides, IG had significantly higher life satisfaction than CG after intervention (p = 0.026), whereas significant reductions in depressive symptoms were observed in IG from 26.1 % at baseline to 13.6 % after the intervention (p = 0.027), and the between-group differences were marginally significant (p = 0.086). CONCLUSION An educational lifestyle intervention can effectively reduce body weight parameters and improve psychological health in overweight/obese patients with SMD.
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Affiliation(s)
- Min-Zhe Zhang
- School of Public Health, Wuhan University, Wuhan, PR China
| | - Jun-Xia Shi
- Center of Prevention and Control of Pingshan, Shenzhen, PR China
| | - Hui Li
- Medical Department, Taixing People's Hospital, Jiangsu, PR China
| | - Rui Chen
- School of Public Health, Wuhan University, Wuhan, PR China
| | - Miao-Bing Zheng
- School of Nutrition and Exercise, Deakin University, Melbourne, Australia
| | - Li-Jing Yan
- Global Health Research Center, Duke Kunshan University, Suzhou, PR China
| | - Neng-Jian Wu
- Center of Prevention and Control of Pingshan, Shenzhen, PR China
| | - Qi-Qiang He
- School of Public Health, Wuhan University, Wuhan, PR China; Hubei Biomass-Resource Chemistry and Environmental Biotechnology Key Laboratory, Wuhan University, Wuhan, PR China.
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12
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Sirotiak Z, Gallagher BT, Smith-Hernandez CA, Showman LJ, Hillard CJ, Brellenthin AG. Endocannabinoid and psychological responses to acute resistance exercise in trained and untrained adults. PLoS One 2023; 18:e0291845. [PMID: 38039265 PMCID: PMC10691681 DOI: 10.1371/journal.pone.0291845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 11/20/2023] [Indexed: 12/03/2023] Open
Abstract
INTRODUCTION This study examined the effects of acute resistance exercise on circulating endocannabinoid (eCB) and mood responses in trained and untrained healthy adults. METHODS Thirty-two healthy adults (22.1 ± 2.9 years) were recruited from trained (reporting resistance exercise at least twice per week for ≥ previous three months) and untrained (performing no resistance exercise for ≥ previous three months) groups. Participants (13 male, 19 female) completed three sets of resistance exercise (16 repetitions at 50% 1-repetition max, 12 repetitions at 70% 1-repetition max, 8 repetitions at 80% 1-repetition max). Resistance machines targeted the legs, chest, back, and abdominal muscles. Mood states, affect, and circulating eCB concentrations were evaluated before and after resistance exercise. RESULTS There were significant decreases in AEA, PEA, and OEA levels following acute resistance exercise (p <0.05; ds = -0.39, -0.48, -0.65, respectively), with no significant group differences or group by time interactions. 2-AG did not change significantly. Positive affect increased significantly following resistance exercise (p = 0.009), while negative affect decreased (p <0.001). Depressive symptoms, anger, confusion, and total mood disturbance decreased significantly (p <0.05), while vigor increased significantly following resistance exercise (p = 0.005). There were no significant group differences or group by time interactions for any psychological outcomes. CONCLUSION These results indicate that acute resistance exercise may reduce eCB and related lipid concentrations, which is opposite to the increase in lipids typically observed with acute aerobic exercise. Furthermore, psychological improvements occur after resistance exercise regardless of decreases in eCBs, supporting the notion that psychological changes with exercise likely occur through a wide variety of biological and environmental mechanisms.
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Affiliation(s)
- Zoe Sirotiak
- Department of Kinesiology, Iowa State University, Ames, Iowa, United States of America
| | - Brandon T. Gallagher
- Department of Kinesiology, Iowa State University, Ames, Iowa, United States of America
| | | | - Lucas J. Showman
- W.M. Keck Metabolomics Research Laboratory, Iowa State University, Ames, Iowa, United States of America
| | - Cecilia J. Hillard
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
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Hjortshoej MH, Aagaard P, Storgaard CD, Juneja H, Lundbye‐Jensen J, Magnusson SP, Couppé C. Hormonal, immune, and oxidative stress responses to blood flow-restricted exercise. Acta Physiol (Oxf) 2023; 239:e14030. [PMID: 37732509 PMCID: PMC10909497 DOI: 10.1111/apha.14030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/12/2023] [Accepted: 07/30/2023] [Indexed: 09/22/2023]
Abstract
INTRODUCTION Heavy-load free-flow resistance exercise (HL-FFRE) is a widely used training modality. Recently, low-load blood-flow restricted resistance exercise (LL-BFRRE) has gained attention in both athletic and clinical settings as an alternative when conventional HL-FFRE is contraindicated or not tolerated. LL-BFRRE has been shown to result in physiological adaptations in muscle and connective tissue that are comparable to those induced by HL-FFRE. The underlying mechanisms remain unclear; however, evidence suggests that LL-BFRRE involves elevated metabolic stress compared to conventional free-flow resistance exercise (FFRE). AIM The aim was to evaluate the initial (<10 min post-exercise), intermediate (10-20 min), and late (>30 min) hormonal, immune, and oxidative stress responses observed following acute sessions of LL-BFRRE compared to FFRE in healthy adults. METHODS A systematic literature search of randomized and non-randomized studies was conducted in PubMed, Embase, Cochrane Central, CINAHL, and SPORTDiscus. The Cochrane Risk of Bias (RoB2, ROBINS-1) and TESTEX were used to evaluate risk of bias and study quality. Data extractions were based on mean change within groups. RESULTS A total of 12525 hits were identified, of which 29 articles were included. LL-BFRRE demonstrated greater acute increases in growth hormone responses when compared to overall FFRE at intermediate (SMD 2.04; 95% CI 0.87, 3.22) and late (SMD 2.64; 95% CI 1.13, 4.16) post-exercise phases. LL-BFRRE also demonstrated greater increase in testosterone responses compared to late LL-FFRE. CONCLUSION These results indicate that LL-BFRRE can induce increased or similar hormone and immune responses compared to LL-FFRE and HL-FFRE along with attenuated oxidative stress responses compared to HL-FFRE.
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Affiliation(s)
- M. H. Hjortshoej
- Institute of Sports Medicine Copenhagen, Department of Orthopedic SurgeryCopenhagen University Hospital Bispebjerg and FrederiksbergCopenhagenDenmark
- Center for Healthy Aging, Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
- Department of Physical and Occupational TherapyBispebjerg and Frederiksberg University HospitalCopenhagenDenmark
- Centre for Health and RehabilitationUniversity College AbsalonSlagelseDenmark
| | - P. Aagaard
- Department of Sports Science and Clinical BiomechanicsUniversity of Southern DenmarkOdenseDenmark
| | - C. D. Storgaard
- Institute of Sports Medicine Copenhagen, Department of Orthopedic SurgeryCopenhagen University Hospital Bispebjerg and FrederiksbergCopenhagenDenmark
- Center for Healthy Aging, Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
- Department of Nutrition, Exercise and Sports, Section of Integrative PhysiologyUniversity of CopenhagenCopenhagenDenmark
| | - H. Juneja
- Centre for Health and RehabilitationUniversity College AbsalonSlagelseDenmark
| | - J. Lundbye‐Jensen
- Department of Nutrition, Exercise and Sports, Section of Integrative PhysiologyUniversity of CopenhagenCopenhagenDenmark
| | - S. P. Magnusson
- Institute of Sports Medicine Copenhagen, Department of Orthopedic SurgeryCopenhagen University Hospital Bispebjerg and FrederiksbergCopenhagenDenmark
- Center for Healthy Aging, Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
- Department of Physical and Occupational TherapyBispebjerg and Frederiksberg University HospitalCopenhagenDenmark
| | - C. Couppé
- Institute of Sports Medicine Copenhagen, Department of Orthopedic SurgeryCopenhagen University Hospital Bispebjerg and FrederiksbergCopenhagenDenmark
- Center for Healthy Aging, Department of Clinical MedicineUniversity of CopenhagenCopenhagenDenmark
- Department of Physical and Occupational TherapyBispebjerg and Frederiksberg University HospitalCopenhagenDenmark
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Crombie KM, Azar A, Botsford C, Heilicher M, Hiser J, Moughrabi N, Gruichich TS, Schomaker CM, Cisler JM. The influence of aerobic exercise on model-based decision making in women with posttraumatic stress disorder. JOURNAL OF MOOD AND ANXIETY DISORDERS 2023; 2:100015. [PMID: 37593142 PMCID: PMC10433398 DOI: 10.1016/j.xjmad.2023.100015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Individuals with PTSD often exhibit deficits in executive functioning. An unexplored aspect of neurocognitive functions associated with PTSD is the type of learning system engaged in during decision-making. A model-free (MF) system is habitual in nature and involves trial-and-error learning that is often updated based on the most recent experience (e.g., repeat action if rewarded). A model-based (MB) system is goal-directed in nature and involves the development of an abstract representation of the environment to facilitate decisions (e.g., choose sequence of actions according to current contextual state and predicted outcomes). The existing neurocognitive literature on PTSD suggests the hypothesis of greater reliance on MF vs MB learning strategies when navigating their environment. While MF systems may be more cognitively efficient, they do not afford flexibility when making prospective predictions about likely outcomes of different decision-tree branches. Emerging research suggests that an acute bout of aerobic exercise improves certain aspects of neurocognition, and thereby could promote the utilization of MB over MF systems during decision making, although prior research has not yet tested this hypothesis. Accordingly, the current study administered a lab-based two-stage Markov decision-making task capable of discriminating MF vs MB decision making, in order to determine if moderate-intensity aerobic exercise (either shortly after or 30-minutes after the exercise bout has ended) promotes greater engagement in MB behavioral strategies compared to light-intensity aerobic exercise in adult women with and without PTSD (N=61). Results revealed that control women generally displayed higher levels of MB behavior that was further increased following immediate exercise, particularly moderate-intensity exercise. By contrast, the PTSD group generally displayed lower levels of MB behavior, and exhibited greater MB behavior when completing the task following moderate-intensity aerobic exercise compared to light-intensity aerobic exercise regardless of whether there was a short or long delay between exercise and the task. Additionally, women with PTSD demonstrated less impairment in MB decision-making compared to controls following moderate-intensity aerobic exercise. These results suggest that an acute bout of moderate-intensity aerobic exercise boosts MB behavior in women with PTSD, and suggests that aerobic exercise may play an important role in enhancing cognitive outcomes for PTSD.
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Affiliation(s)
- Kevin M. Crombie
- The University of Texas at Austin, Department of Psychiatry and Behavioral Sciences, 1601 Trinity Street, Building B, Austin, Texas, United States of America 78712
- The University of Alabama, Department of Kinesiology, 1003 Wade Hall, Tuscaloosa, Alabama, United States of America 35487
| | - Ameera Azar
- The University of Texas at Austin, Department of Psychiatry and Behavioral Sciences, 1601 Trinity Street, Building B, Austin, Texas, United States of America 78712
| | - Chloe Botsford
- University of Wisconsin – Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, Wisconsin, United States of America 53719
| | - Mickela Heilicher
- University of Wisconsin – Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, Wisconsin, United States of America 53719
| | - Jaryd Hiser
- University of Wisconsin – Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, Wisconsin, United States of America 53719
- The Ohio State University, Department of Psychiatry and Behavioral Health, 1670 Upham Drive, Suite 130, Columbus, Ohio, United States of America 43210
| | - Nicole Moughrabi
- The University of Texas at Austin, Department of Psychiatry and Behavioral Sciences, 1601 Trinity Street, Building B, Austin, Texas, United States of America 78712
| | - Tijana Sagorac Gruichich
- University of Wisconsin – Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, Wisconsin, United States of America 53719
| | - Chloe M. Schomaker
- The University of Texas at Austin, Department of Psychiatry and Behavioral Sciences, 1601 Trinity Street, Building B, Austin, Texas, United States of America 78712
| | - Josh M. Cisler
- The University of Texas at Austin, Department of Psychiatry and Behavioral Sciences, 1601 Trinity Street, Building B, Austin, Texas, United States of America 78712
- Institute for Early Life Adversity Research, The University of Texas at Austin Dell Medical School, 1601 Trinity Street, Building B, Austin, Texas, United States of America 78712
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Li H, Su W, Cai J, Zhao L, Li Y. Effects of exercise of different intensities on withdrawal symptoms among people with substance use disorder: a systematic review and meta-analysis. Front Physiol 2023; 14:1126777. [PMID: 37234417 PMCID: PMC10208401 DOI: 10.3389/fphys.2023.1126777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 04/17/2023] [Indexed: 05/28/2023] Open
Abstract
Background: Exercise can effectively attenuate withdrawal symptoms and reduce relapse, but it is unknown whether exercise of different intensities produces different results. This study aimed to systematically review the effects of different exercise intensities on withdrawal symptoms among people with substance use disorder (SUD). Methods: Systematic searches for randomized controlled trials (RCTs) on exercise, SUD, and abstinence symptoms were conducted via electronic databases, including PubMed, up to June 2022. Study quality was evaluated using the Cochrane Risk of Bias tool (RoB 2.0) for assessment of risk of bias in randomized trials. The meta-analysis was performed by calculating the standard mean difference (SMD) in outcomes of interventions involving light-, moderate-, and high-intensity exercise for each individual study using Review Manager version 5.3 (RevMan 5.3). Results: In total, 22 RCTs (n = 1,537) were included. Overall, exercise interventions had significant effects on withdrawal symptoms, but the effect size varied with exercise intensity and by outcome measure (i.e., for different negative emotions). Light-, moderate-, and high-intensity exercise reduced cravings after the intervention [SMD = -0.71, 95% CI = (-0.90, -0.52)], and there were no statistical differences between the subgroups (p > 0.05). Light-, moderate-, and high-intensity exercise reduced depression after the intervention [light, SMD = -0.33, 95% CI = (-0.57, -0.09); moderate, SMD = -0.64, 95% CI = (-0.85, -0.42); high, SMD = -0.25, 95% CI = (-0.44, -0.05)], with moderate-intensity exercise producing the best effect (p < 0.05). Only light- and moderate-intensity exercise relieved anxiety after the intervention [light, SMD = -0.48, 95% CI = (-0.71, -0.26); moderate, SMD = -0.58, 95% CI = (-0.85, -0.31)]. Only high-intensity exercise worked in alleviating stress [SMD = -1.13, 95% CI = (-2.22, -0.04)]. Both irritability and restlessness could be improved by light- and moderate-intensity exercise [irritability, SMD = -0.74, 95% CI = (-0.98, -0.50); restless, SMD = -0.72, 95% CI = (-0.98, -0.47)], and there were no statistical differences between the subgroups (p > 0.05). Moderate- and high-intensity exercise decreased withdrawal syndrome after the intervention [moderate, SMD = -0.30, 95% CI = (-0.55, -0.05); high, SMD = -1.33, 95% CI = (-1.90, -0.76)], with high-intensity exercise producing the best effects (p < 0.01). Conclusion: Overall, exercise leads to improvements in withdrawal symptoms in individuals with SUD, but these effects vary significantly between the exercise of different intensities and according to the type of withdrawal symptoms. Moderate-intensity exercise has the greatest benefits in improving depression and anxiety; high-intensity exercise has the greatest benefits in improving withdrawal syndrome. Systematic Review Registration: www.crd.york.ac.uk/PROSPERO/, identifier, CRD42022343791.
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Affiliation(s)
- Hao Li
- Department of Exercise Physiology, Beijing Sport University, Beijing, China
| | - Wantang Su
- Department of Exercise Physiology, Beijing Sport University, Beijing, China
| | - Jiajia Cai
- Department of Exercise Physiology, Beijing Sport University, Beijing, China
| | - Li Zhao
- Department of Exercise Physiology, Beijing Sport University, Beijing, China
- Key Laboratory of Physical Fitness and Exercise, Ministry of Education, Beijing Sport University, Beijing, China
| | - Yan Li
- Department of Exercise Physiology, Beijing Sport University, Beijing, China
- Key Laboratory of Physical Fitness and Exercise, Ministry of Education, Beijing Sport University, Beijing, China
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Psarianos A, Chryssanthopoulos C, Paparrigopoulos T, Philippou A. The Role of Physical Exercise in Opioid Substitution Therapy: Mechanisms of Sequential Effects. Int J Mol Sci 2023; 24:ijms24054763. [PMID: 36902190 PMCID: PMC10003472 DOI: 10.3390/ijms24054763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Revised: 02/21/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
It is generally accepted that chronic opioid use is associated with structural and functional changes in the human brain that lead to an enhancement of impulsive behavior for immediate satisfaction. Interestingly, in recent years, physical exercise interventions have been used as an adjunctive treatment for patients with opioid use disorders (OUDs). Indeed, exercise has positive effects on both the biological and psychosocial basis of addiction, modifying neural circuits such as the reward, inhibition, and stress systems, and thus causing behavioral changes. This review focuses on the possible mechanisms that contribute to the beneficial effects of exercise on the treatment of OUDs, with emphasis placed on the description of a sequential consolidation of these mechanisms. Exercise is thought to act initially as a factor of internal activation and self-regulation and eventually as a factor of commitment. This approach suggests a sequential (temporal) consolidation of the functions of exercise in favor of gradual disengagement from addiction. Particularly, the sequence in which the exercise-induced mechanisms are consolidated follows the pattern of internal activation-self-regulation-commitment, eventually resulting in stimulation of the endocannabinoid and endogenous opioid systems. Additionally, this is accompanied by modification of molecular and behavioral aspects of opioid addiction. Overall, the neurobiological actions of exercise in combination with certain psychological mechanisms appear to promote its beneficial effects. Given the positive effects of exercise on both physical and mental health, exercise prescription is recommended as a complement to conventional therapy for patients on opioid maintenance treatment.
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Affiliation(s)
- Alexandros Psarianos
- 1st Department of Psychiatry, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece
| | - Costas Chryssanthopoulos
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Thomas Paparrigopoulos
- 1st Department of Psychiatry, Medical School, National and Kapodistrian University of Athens, 11528 Athens, Greece
| | - Anastassios Philippou
- Department of Physiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Correspondence:
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Recchia F, Bernal JDK, Fong DY, Wong SHS, Chung PK, Chan DKC, Capio CM, Yu CCW, Wong SWS, Sit CHP, Chen YJ, Thompson WR, Siu PM. Physical Activity Interventions to Alleviate Depressive Symptoms in Children and Adolescents: A Systematic Review and Meta-analysis. JAMA Pediatr 2023; 177:132-140. [PMID: 36595284 PMCID: PMC9857695 DOI: 10.1001/jamapediatrics.2022.5090] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 09/21/2022] [Indexed: 01/04/2023]
Abstract
Importance Depression is the second most prevalent mental disorder among children and adolescents, yet only a small proportion seek or receive disorder-specific treatment. Physical activity interventions hold promise as an alternative or adjunctive approach to clinical treatment for depression. Objective To determine the association of physical activity interventions with depressive symptoms in children and adolescents. Data Sources PubMed, CINAHL, PsycINFO, EMBASE, and SPORTDiscus were searched from inception to February 2022 for relevant studies written in English, Chinese, or Italian. Study Selection Two independent researchers selected studies that assessed the effects of physical activity interventions on depressive symptoms in children and adolescents compared with a control condition. Data Extraction and Synthesis A random-effects meta-analysis using Hedges g was performed. Heterogeneity, risk of bias, and publication bias were assessed independently by multiple reviewers. Meta-regressions and sensitivity analyses were conducted to substantiate the overall results. The study followed the PRISMA reporting guideline. Main Outcomes and Measures The main outcome was depressive symptoms as measured by validated depression scales at postintervention and follow-up. Results Twenty-one studies involving 2441 participants (1148 [47.0%] boys; 1293 [53.0%] girls; mean [SD] age, 14 [3] years) were included. Meta-analysis of the postintervention differences revealed that physical activity interventions were associated with a reduction in depressive symptoms compared with the control condition (g = -0.29; 95% CI, -0.47 to -0.10; P = .004). Analysis of the follow-up outcomes in 4 studies revealed no differences between the physical activity and control groups (g = -0.39; 95% CI, -1.01 to 0.24; P = .14). Moderate study heterogeneity was detected (Q = 53.92; df = 20; P < .001; I2 = 62.9% [95% CI, 40.7%-76.8%]). The primary moderator analysis accounting for total physical activity volume, study design, participant health status, and allocation and/or assessment concealment did not moderate the main treatment effect. Secondary analyses demonstrated that intervention (ie, <12 weeks in duration, 3 times per week, unsupervised) and participant characteristics (ie, aged ≥13 years, with a mental illness and/or depression diagnosis) may influence the overall treatment effect. Conclusions and Relevance Physical activity interventions may be used to reduce depressive symptoms in children and adolescents. Greater reductions in depressive symptoms were derived from participants older than 13 years and with a mental illness and/or depression diagnosis. The association with physical activity parameters such as frequency, duration, and supervision of the sessions remains unclear and needs further investigation.
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Affiliation(s)
- Francesco Recchia
- Division of Kinesiology, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Joshua D. K. Bernal
- Division of Kinesiology, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Daniel Y. Fong
- School of Nursing, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
| | - Stephen H. S. Wong
- Department of Sports Science and Physical Education, Faculty of Education, The Chinese University of Hong Kong, Hong Kong, China
| | - Pak-Kwong Chung
- Department of Sport, Physical Education and Health, Faculty of Social Sciences, Hong Kong Baptist University, Hong Kong, China
| | - Derwin K. C. Chan
- Department of Early Childhood Education, Faculty of Education and Human Development, The Education University of Hong Kong, Hong Kong, China
| | - Catherine M. Capio
- Department of Early Childhood Education, Faculty of Education and Human Development, The Education University of Hong Kong, Hong Kong, China
| | - Clare C. W. Yu
- Department of Rehabilitation Sciences, Faculty of Health and Social Sciences, The Hong Kong Polytechnic University, Hong Kong, China
| | - Sam W. S. Wong
- Physical Fitness Association of Hong Kong, Hong Kong, China
| | - Cindy H. P. Sit
- Department of Sports Science and Physical Education, Faculty of Education, The Chinese University of Hong Kong, Hong Kong, China
| | - Ya-Jun Chen
- Department of Maternal and Child Health, School of Public Health, Sun Yat Sen University, Guangzhou, China
| | - Walter R. Thompson
- College of Education and Human Development, Georgia State University, Atlanta
| | - Parco M. Siu
- Division of Kinesiology, School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, China
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The Endocannabinoid System and Physical Exercise. Int J Mol Sci 2023; 24:ijms24031989. [PMID: 36768332 PMCID: PMC9916354 DOI: 10.3390/ijms24031989] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/12/2023] [Accepted: 01/13/2023] [Indexed: 01/20/2023] Open
Abstract
The endocannabinoid system (ECS) is involved in various processes, including brain plasticity, learning and memory, neuronal development, nociception, inflammation, appetite regulation, digestion, metabolism, energy balance, motility, and regulation of stress and emotions. Physical exercise (PE) is considered a valuable non-pharmacological therapy that is an immediately available and cost-effective method with a lot of health benefits, one of them being the activation of the endogenous cannabinoids. Endocannabinoids (eCBs) are generated as a response to high-intensity activities and can act as short-term circuit breakers, generating antinociceptive responses for a short and variable period of time. A runner's high is an ephemeral feeling some sport practitioners experience during endurance activities, such as running. The release of eCBs during sustained physical exercise appears to be involved in triggering this phenomenon. The last decades have been characterized by an increased interest in this emotional state induced by exercise, as it is believed to alleviate pain, induce mild sedation, increase euphoric levels, and have anxiolytic effects. This review provides information about the current state of knowledge about endocannabinoids and physical effort and also an overview of the studies published in the specialized literature about this subject.
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Botsford C, Brellenthin AG, Cisler JM, Hillard CJ, Koltyn KF, Crombie KM. Circulating endocannabinoids and psychological outcomes in women with PTSD. J Anxiety Disord 2023; 93:102656. [PMID: 36469982 PMCID: PMC9839585 DOI: 10.1016/j.janxdis.2022.102656] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/10/2022] [Accepted: 11/22/2022] [Indexed: 11/24/2022]
Abstract
BACKGROUND Recent research has attempted to elucidate the relationship between blood-based biomarkers (e.g., endocannabinoids; eCBs: including N-arachidonoylethanolamine [AEA] and 2-arachidonoylglycerol [2-AG]) and mental health outcomes in psychiatric populations such as posttraumatic stress disorder (PTSD). Prior research suggests that adults with PTSD may have altered circulating eCB tone and a blunted mobilization of eCBs (particularly 2-AG) in response to stress (e.g., aerobic exercise), although our understanding has been limited in part due to heterogenous samples and small sample sizes. METHODS A subset of data was pooled from five studies in which women with and without PTSD (N = 98) completed questionnaires related to mood states and a blood draw prior to and following a bout of moderate-intensity aerobic exercise in order to determine: 1) whether circulating eCBs differ between groups and whether depressive and PTSD symptom severity are associated with baseline eCBs, 2) whether a bout of aerobic exercise increases circulating eCBs in adult women with PTSD, and 3) whether circulating eCBs are associated with overall mood states and exercise-induced improvements in mood states in women with and without PTSD. RESULTS PTSD diagnoses were not associated with baseline concentrations of eCBs. Greater depressive symptom severity and PTSD symptom severity within the negative alteration in cognition and mood cluster were associated with lower circulating AEA. Circulating AEA significantly increased following aerobic exercise for both groups, whereas circulating 2-AG only increased in women without PTSD. Greater circulating AEA within the PTSD group was associated with lower depressive mood, confusion, and total mood disturbance. CONCLUSIONS These findings suggest that greater circulating AEA is associated with better overall mood and lower depressive and PTSD symptom severity, and that an acute bout of moderate-intensity aerobic exercise increases circulating AEA (but not 2-AG) in adult women with PTSD. These findings are consistent with the idea that greater eCB tone (particularly AEA) following pharmacological and/or non-pharmacological manipulations may be beneficial for improving psychological outcomes (e.g., mood, cognition) among PTSD, and possibly other psychiatric populations.
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Affiliation(s)
- Chloe Botsford
- University of Wisconsin - Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, WI 53719, United States.
| | - Angelique G Brellenthin
- Iowa State University, Department of Kinesiology, Forker Building, 534 Wallace Road, Ames, IA 50011, United States.
| | - Josh M Cisler
- The University of Texas at Austin, Department of Psychiatry and Behavioral Sciences, 1601 Trinity Street, Building B, Austin, TX 78712, United States; Institute for Early Life Adversity Research, The University of Texas at Austin Dell Medical School & Department of Psychiatry and Behavioral Sciences, 1601 Trinity Street, Building B, Austin, TX 78712, United States.
| | - Cecilia J Hillard
- Medical College of Wisconsin, Neuroscience Research Center, Department of Pharmacology and Toxicology, 8701 Watertown Plank Rd, Milwaukee, WI 53226, USA.
| | - Kelli F Koltyn
- University of Wisconsin - Madison, Department of Kinesiology, 1300 University Avenue, Madison, WI 53706, United States.
| | - Kevin M Crombie
- The University of Texas at Austin, Department of Psychiatry and Behavioral Sciences, 1601 Trinity Street, Building B, Austin, TX 78712, United States.
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20
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Jurado-Fasoli L, Di X, Sanchez-Delgado G, Yang W, Osuna-Prieto FJ, Ortiz-Alvarez L, Krekels E, Harms AC, Hankemeier T, Schönke M, Aguilera CM, Llamas-Elvira JM, Kohler I, Rensen PCN, Ruiz JR, Martinez-Tellez B. Acute and long-term exercise differently modulate plasma levels of oxylipins, endocannabinoids, and their analogues in young sedentary adults: A sub-study and secondary analyses from the ACTIBATE randomized controlled-trial. EBioMedicine 2022; 85:104313. [PMID: 36374769 PMCID: PMC9626892 DOI: 10.1016/j.ebiom.2022.104313] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Revised: 10/02/2022] [Accepted: 10/03/2022] [Indexed: 11/07/2022] Open
Abstract
BACKGROUND Fatty acid-derived lipid mediators including oxylipins, endocannabinoids (eCBs), and their analogues, have emerged as key metabolites in the inflammatory and immune response to physiological stressors. METHODS This report was based on a sub-study and secondary analyses the ACTIBATE single-center unblinded randomized controlled trial (ClinicalTrials.gov ID: NCT02365129). The study was performed in the Sport and Health University Research Institute and the Virgen de las Nieves University Hospital of the University of Granada. Eligible participants were young, sedentary adults with no chronic diseases. Here, we performed both an acute endurance and resistance exercise sub-studies (n.ß=.ß14 and 17 respectively), and a 24-week supervised exercise intervention, combining endurance and resistance exercise training at moderate-intensity (MOD-EX) or vigorous-intensity (VIG-EX) exercise groups, in young sedentary adults. Randomization was performed by unrestricted randomization. Plasma levels of oxylipins, eCBs, and their analogues were measured using liquid chromatography-tandem mass spectrometry. FINDINGS Both endurance and resistance exercise increased by.ß+50% the plasma levels of dihomo-..-linolenic acid and arachidonic acid (AA) omega-6 derived oxylipins, as well as eicosapentaenoic acid and docosahexaenoic acid omega-3 derived after 3 and 120.ßmin of the bout of exercise (all ..2.ß....ß0.219 and P.ß..±.ß0.039). These exercise modalities also increased the levels of anandamide and eCBs analogues (+25%). 145 young sedentary adults were assigned to a control (CON, n.ß=.ß54), a MOD-EX (n.ß=.ß48) or a VIG-EX (n.ß=.ß43). 102 participants were included in the final long-term analyses (CON, n.ß=.ß36; MOD-EX, n.ß=.ß33; and VIG-EX, n.ß=.ß33) of the trial. After 24-week of supervised exercise, MOD-EX decreased plasma levels of omega-6 oxylipins, concretely linoleic acid (LA) and adrenic acid derived oxylipins, and the eCBs analogues OEA and LEA in comparison to the CON (all P.ß..±.ß0.021). VIG-EX decreased LA-derived oxylipins and LEA compared to CON. No relevant adverse events were recorded. INTERPRETATION Endurance and resistance exercises acutely increased plasma levels of oxylipins, eCBs, and their analogues, whereas 24 weeks of exercise training decreased fasting plasma levels of omega-6 oxylipins, and eCBs analogues in young, sedentary adults. FUNDING See Acknowledgments section.
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Affiliation(s)
- Lucas Jurado-Fasoli
- PROmoting FITness and Health Through Physical Activity Research Group (PROFITH), Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain; Department of Physiology, Faculty of Medicine, University of Granada, Granada, Spain
| | - Xinyu Di
- Department of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, the Netherlands
| | - Guillermo Sanchez-Delgado
- PROmoting FITness and Health Through Physical Activity Research Group (PROFITH), Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain; Pennington Biomedical Research Center, Baton Rouge, LA 70808, USA
| | - Wei Yang
- Department of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, the Netherlands
| | - Francisco J Osuna-Prieto
- PROmoting FITness and Health Through Physical Activity Research Group (PROFITH), Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain; Department of Analytical Chemistry, University of Granada, Granada, Spain; Research and Development of Functional Food Centre (CIDAF), Granada, Spain
| | - Lourdes Ortiz-Alvarez
- PROmoting FITness and Health Through Physical Activity Research Group (PROFITH), Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain; Department of Biochemistry and Molecular Biology II, School of Pharmacy, University of Granada, Granada, Spain
| | - Elke Krekels
- Department of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, the Netherlands
| | - Amy C Harms
- Department of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, the Netherlands
| | - Thomas Hankemeier
- Department of Systems Biomedicine and Pharmacology, Leiden Academic Centre for Drug Research (LACDR), Leiden University, Leiden, the Netherlands
| | - Milena Schönke
- Department of Medicine, Division of Endocrinology, and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Centre, Leiden, the Netherlands
| | - Concepcion M Aguilera
- Department of Biochemistry and Molecular Biology II, ..úJos.. Mataix Verd....Ñ Institute of Nutrition and Food Technology (INYTA), Biomedical Research Centre (CIBM), University of Granada, Granada 18016, Spain; Instituto de Investigaci..n Biosanitaria, ibs.Granada, Granada, Spain; CIBER Fisiopatolog.ía de la Obesidad y la Nutrici..n (CIBEROBN), Madrid 28029, Spain
| | - Jose M Llamas-Elvira
- Instituto de Investigaci..n Biosanitaria, ibs.Granada, Granada, Spain; Servicio de Medicina Nuclear, Hospital Universitario Virgen de las Nieves, Granada, Spain
| | - Isabelle Kohler
- Division of BioAnalytical Chemistry, Vrije Universiteit Amsterdam, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam, the Netherlands; Center for Analytical Sciences Amsterdam, Amsterdam, the Netherlands
| | - Patrick C N Rensen
- Department of Medicine, Division of Endocrinology, and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Centre, Leiden, the Netherlands
| | - Jonatan R Ruiz
- PROmoting FITness and Health Through Physical Activity Research Group (PROFITH), Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain; Instituto de Investigaci..n Biosanitaria, ibs.Granada, Granada, Spain.
| | - Borja Martinez-Tellez
- PROmoting FITness and Health Through Physical Activity Research Group (PROFITH), Department of Physical Education and Sports, Faculty of Sport Sciences, Sport and Health University Research Institute (iMUDS), University of Granada, Granada, Spain; Department of Medicine, Division of Endocrinology, and Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Centre, Leiden, the Netherlands; Department of Education, Faculty of Education Sciences and SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almer.ía, Almer.ía, Spain.
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21
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Jiang S, Zheng C, Wen G, Bu B, Zhao S, Xu X. Down-regulation of NR2B receptors contributes to the analgesic and antianxiety effects of enriched environment mediated by endocannabinoid system in the inflammatory pain mice. Behav Brain Res 2022; 435:114062. [PMID: 35985400 DOI: 10.1016/j.bbr.2022.114062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 08/05/2022] [Accepted: 08/15/2022] [Indexed: 11/28/2022]
Abstract
Chronic pain states are highly prevalent and yet poorly controlled by currently available analgesics. It has been reported that enriched environment (EE), as a new way of endogenous pharmacotherapy, is effective in attenuating chronic inflammatory pain. However, the underlying molecular mechanisms are still not fully understood. NMDA NR2B receptor plays a critical role in pain transmission and modulation. Thus, in this study, we aimed at the effect of EE on the NR2B receptors expression in the prefrontal cortex, hippocampus and thalamus in the inflammatory pain mice. The results showed a significant increase of NR2B receptors in the thalamus of mice at 7 d following injection of CFA in the subcutaneous of the bottom of the left hind paw. EE significantly reduced the duration of mechanical hypersensitivity and anxiety-related behavior and the expression of NR2B receptors as compared to the standard condition. Furthermore, EE significantly increased 2-arachidonoylglycero (2-AG) levels at 7 d in the inflammatory pain mice as compared to the standard condition, and the effect of EE on the behavior and the expression of NR2B receptors was abolished by intraperitoneal injection of AM281 (a selective antagonist of CB1 receptor). Elevated 2-AG levels by intraperitoneal injection of JZL184 (a selective inhibitor of MAGL, the enzyme responsible for 2-AG hydrolysis) produced the same effect as EE. Results from this study provide the evidence that EE mimics endocannabinoids to take analgesic and anti-anxiety activities by decreasing the expression of the NR2B receptors via the CB1 receptor in the thalamus, pending further studies.
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Affiliation(s)
- Shukun Jiang
- Department of Forensic Clinical Medicine, School of Forensic Medicine, China Medical University, Shenyang, PR China; Key Laboratory of Forensic Bio-evidence Sciences, Liaoning Province, PR China; China Medical University Center of Forensic Investigation, Shenyang, PR China
| | - Chuanfei Zheng
- Department of Forensic Clinical Medicine, School of Forensic Medicine, China Medical University, Shenyang, PR China; Key Laboratory of Forensic Bio-evidence Sciences, Liaoning Province, PR China; China Medical University Center of Forensic Investigation, Shenyang, PR China
| | - Gehua Wen
- Department of Forensic Clinical Medicine, School of Forensic Medicine, China Medical University, Shenyang, PR China; Key Laboratory of Forensic Bio-evidence Sciences, Liaoning Province, PR China; China Medical University Center of Forensic Investigation, Shenyang, PR China
| | - Bin Bu
- Department of Forensic Clinical Medicine, School of Forensic Medicine, China Medical University, Shenyang, PR China; Key Laboratory of Forensic Bio-evidence Sciences, Liaoning Province, PR China; China Medical University Center of Forensic Investigation, Shenyang, PR China
| | - Shuang Zhao
- China Medical University Center of Forensic Investigation, Shenyang, PR China
| | - Xiaoming Xu
- Department of Forensic Clinical Medicine, School of Forensic Medicine, China Medical University, Shenyang, PR China; Key Laboratory of Forensic Bio-evidence Sciences, Liaoning Province, PR China; China Medical University Center of Forensic Investigation, Shenyang, PR China.
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22
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Desai S, Borg B, Cuttler C, Crombie KM, Rabinak CA, Hill MN, Marusak HA. A Systematic Review and Meta-Analysis on the Effects of Exercise on the Endocannabinoid System. Cannabis Cannabinoid Res 2022; 7:388-408. [PMID: 34870469 PMCID: PMC9418357 DOI: 10.1089/can.2021.0113] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Introduction: The endocannabinoid (eCB) system plays a key role in maintaining homeostasis, including the regulation of metabolism and stress responses. Chronic stress may blunt eCB signaling, and disruptions in eCB signaling have been linked to stress-related psychiatric disorders and physical health conditions, including anxiety, depression, post-traumatic stress disorder (PTSD), diabetes, and obesity. Pharmacological and nonpharmacological behavioral interventions (e.g., exercise) that target the eCB system may be promising therapeutic approaches for the prevention and treatment of stress-related diseases. In this study, we perform a systematic review and the first meta-analysis to examine the impact of exercise on circulating eCB concentrations. Materials and Methods: We performed a review of the MEDLINE (PubMed) database for original articles examining the impact of exercise on eCBs in humans and animal models. A total of 262 articles were screened for initial inclusion. Results: Thirty-three articles (reporting on 57 samples) were included in the systematic review and 10 were included in the meta-analysis. The majority of samples that measured anandamide (AEA) showed a significant increase in AEA concentrations following acute exercise (74.4%), whereas effects on 2-arachidonoylglycerol (2-AG) were inconsistent. The meta-analysis, however, revealed a consistent increase in both AEA and 2-AG following acute exercise across modalities (e.g., running, cycling), species (e.g., humans, mice), and in those with and without pre-existing health conditions (e.g., PTSD, depression). There was substantial heterogeneity in the magnitude of the effect across studies, which may relate to exercise intensity, physical fitness, timing of measurement, and/or fasted state. Effects of chronic exercise were inconsistent. Conclusions: Potential interpretations and implications of exercise-induced mobilization of eCBs are discussed, including refilling of energy stores and mediating analgesic and mood elevating effects of exercise. We also offer recommendations for future work and discuss therapeutic implications for exercise in the prevention and treatment of stress-related psychopathology.
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Affiliation(s)
- Shreya Desai
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, Detroit, Michigan, USA
| | - Breanna Borg
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, Detroit, Michigan, USA
| | - Carrie Cuttler
- Department of Psychology, Washington State University, Pullman, Washington, USA
| | - Kevin M. Crombie
- Department of Psychiatry and Behavioral Sciences, University of Texas at Austin, Austin, Texas, USA
| | - Christine A. Rabinak
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, Detroit, Michigan, USA
- Department of Pharmacy Practice and Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, Michigan, USA
- Department of Pharmaceutical Sciences, Eugene Applebaum College of Pharmacy and Health Sciences, Wayne State University, Detroit, Michigan, USA
- Merrill Palmer Skillman Institute for Child and Family Development, Wayne State University, Detroit, Michigan, USA
| | - Matthew N. Hill
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Hilary A. Marusak
- Department of Psychiatry and Behavioral Neurosciences, School of Medicine, Wayne State University, Detroit, Michigan, USA
- Merrill Palmer Skillman Institute for Child and Family Development, Wayne State University, Detroit, Michigan, USA
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Saanijoki T, Kantonen T, Pekkarinen L, Kalliokoski K, Hirvonen J, Malén T, Tuominen L, Tuulari JJ, Arponen E, Nuutila P, Nummenmaa L. Aerobic Fitness Is Associated with Cerebral μ-Opioid Receptor Activation in Healthy Humans. Med Sci Sports Exerc 2022; 54:1076-1084. [PMID: 35195103 DOI: 10.1249/mss.0000000000002895] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
INTRODUCTION Central μ-opioid receptors (MORs) modulate affective responses to physical exercise. Individuals with higher aerobic fitness report greater exercise-induced mood improvements than those with lower fitness, but the link between cardiorespiratory fitness and the MOR system remains unresolved. Here we tested whether maximal oxygen uptake (V̇O2peak) and physical activity level are associated with cerebral MOR availability and whether these phenotypes predict endogenous opioid release after a session of exercise. METHODS We studied 64 healthy lean men who performed a maximal incremental cycling test for V̇O2peak determination, completed a questionnaire assessing moderate-to-vigorous physical activity (MVPA; in minutes per week), and underwent positron emission tomography with [11C]carfentanil, a specific radioligand for MOR. A subset of 24 subjects underwent additional positron emission tomography scan also after a 1-h session of moderate-intensity exercise and 12 of them also after a bout of high-intensity interval training. RESULTS Higher self-reported MVPA level predicted greater opioid release after high-intensity interval training, and both V̇O2peak and MVPA level were associated with a larger decrease in cerebral MOR binding after aerobic exercise in the ventral striatum, orbitofrontal cortex, and insula. That is, more trained individuals showed greater opioid release acutely after exercise in brain regions especially relevant for reward and cognitive processing. Fitness was not associated with MOR availability. CONCLUSIONS We conclude that regular exercise training and higher aerobic fitness may induce neuroadaptation within the MOR system, which might contribute to improved emotional and behavioral responses associated with long-term exercise.
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Affiliation(s)
| | | | | | | | | | - Tuulia Malén
- Turku PET Centre, University of Turku, Turku, FINLAND
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24
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Park Y, Watkins BA. Dietary PUFAs and Exercise Dynamic Actions on Endocannabinoids in Brain: Consequences for Neural Plasticity and Neuroinflammation. Adv Nutr 2022; 13:1989-2001. [PMID: 35675221 PMCID: PMC9526838 DOI: 10.1093/advances/nmac064] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 10/15/2021] [Accepted: 06/02/2022] [Indexed: 01/28/2023] Open
Abstract
The brain and peripheral nervous system provide oversight to muscle physiology and metabolism. Muscle is the largest organ in the body and critical for glucose sensitivity, prevention of diabetes, and control of obesity. The central nervous system produces endocannabinoids (eCBs) that play a role in brain neurobiology, such as inflammation and pain. Interestingly, studies in humans and rodents show that a moderate duration of exercise increases eCBs in the brain and blood and influences cannabinoid receptors. Cannabinoid actions in the nervous system have advanced our understanding of pain, well-being, and disease. Nutrition is an important aspect of brain and eCB physiology because eCBs are biosynthesized from PUFAs. The primary eCB metabolites are derived from arachidonic acid, a 20:4n-6 (ω-6) PUFA, and the n-3 (ω-3) PUFAs, EPA and DHA. The eCBs bind to cannabinoid receptors CB1 and CB2 to exert a wide range of activities, such as stimulating appetite, influencing energy metabolism, supporting the immune system, and facilitating neuroplasticity. A diet containing different essential n-6 and n-3 PUFAs will dominate the formation of specific eCBs, and subsequently their actions as ligands for CB1 and CB2. The eCBs also function as substrates for cyclooxygenase enzymes, including potential substrates for the oxylipins (OxLs), which can be proinflammatory. Together, the eCBs and OxLs act as modulators of neuroinflammation. Thus, dietary PUFAs have implications for exercise responses via synthesis of eCBs and their effects on neuroinflammation. Neurotrophins also participate in interactions between diet and the eCBs, specifically brain-derived neurotrophic factor (BDNF). BDNF supports neuroplasticity in cooperation with the endocannabinoid system (ECS). This review will describe the role of PUFAs in eCB biosynthesis, discuss the ECS and OxLs in neuroinflammation, highlight the evidence for exercise effects on eCBs, and describe eCB and BDNF actions on neuroplasticity.
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25
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Pearce M, Garcia L, Abbas A, Strain T, Schuch FB, Golubic R, Kelly P, Khan S, Utukuri M, Laird Y, Mok A, Smith A, Tainio M, Brage S, Woodcock J. Association Between Physical Activity and Risk of Depression: A Systematic Review and Meta-analysis. JAMA Psychiatry 2022; 79:550-559. [PMID: 35416941 PMCID: PMC9008579 DOI: 10.1001/jamapsychiatry.2022.0609] [Citation(s) in RCA: 286] [Impact Index Per Article: 143.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/10/2022] [Indexed: 02/02/2023]
Abstract
Importance Depression is the leading cause of mental health-related disease burden and may be reduced by physical activity, but the dose-response relationship between activity and depression is uncertain. Objective To systematically review and meta-analyze the dose-response association between physical activity and incident depression from published prospective studies of adults. Data Sources PubMed, SCOPUS, Web of Science, PsycINFO, and the reference lists of systematic reviews retrieved by a systematic search up to December 11, 2020, with no language limits. The date of the search was November 12, 2020. Study Selection We included prospective cohort studies reporting physical activity at 3 or more exposure levels and risk estimates for depression with 3000 or more adults and 3 years or longer of follow-up. Data Extraction and Synthesis Data extraction was completed independently by 2 extractors and cross-checked for errors. A 2-stage random-effects dose-response meta-analysis was used to synthesize data. Study-specific associations were estimated using generalized least-squares regression and the pooled association was estimated by combining the study-specific coefficients using restricted maximum likelihood. Main Outcomes and Measures The outcome of interest was depression, including (1) presence of major depressive disorder indicated by self-report of physician diagnosis, registry data, or diagnostic interviews and (2) elevated depressive symptoms established using validated cutoffs for a depressive screening instrument. Results Fifteen studies comprising 191 130 participants and 2 110 588 person-years were included. An inverse curvilinear dose-response association between physical activity and depression was observed, with steeper association gradients at lower activity volumes; heterogeneity was large and significant (I2 = 74%; P < .001). Relative to adults not reporting any activity, those accumulating half the recommended volume of physical activity (4.4 marginal metabolic equivalent task hours per week [mMET-h/wk]) had 18% (95% CI, 13%-23%) lower risk of depression. Adults accumulating the recommended volume of 8.8 mMET hours per week had 25% (95% CI, 18%-32%) lower risk with diminishing potential benefits and higher uncertainty observed beyond that exposure level. There were diminishing additional potential benefits and greater uncertainty at higher volumes of physical activity. Based on an estimate of exposure prevalences among included cohorts, if less active adults had achieved the current physical activity recommendations, 11.5% (95% CI, 7.7%-15.4%) of depression cases could have been prevented. Conclusions and Relevance This systematic review and meta-analysis of associations between physical activity and depression suggests significant mental health benefits from being physically active, even at levels below the public health recommendations. Health practitioners should therefore encourage any increase in physical activity to improve mental health.
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Affiliation(s)
- Matthew Pearce
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
| | - Leandro Garcia
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
- Centre for Public Health, Institute of Clinical Sciences, Queen’s University Belfast, Belfast, Northern Ireland
| | - Ali Abbas
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
| | - Tessa Strain
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
| | - Felipe Barreto Schuch
- Department of Sports Methods and Techniques, Federal University of Santa Maria, Santa Maria, Brazil
| | - Rajna Golubic
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
- Cambridge University Hospitals NHS Foundation Trust, Cambridge, England
| | - Paul Kelly
- Physical Activity for Health Research Centre, Institute of Sport Physical Education and Health Science, University of Edinburgh, Edinburgh, Scotland
| | - Saad Khan
- University of Cambridge School of Clinical Medicine, Addenbrooke’s Treatment Centre, Cambridge Biomedical Campus, Cambridge, England
| | - Mrudula Utukuri
- University of Cambridge School of Clinical Medicine, Addenbrooke’s Treatment Centre, Cambridge Biomedical Campus, Cambridge, England
| | - Yvonne Laird
- Prevention Research Collaboration, Sydney School of Public Health, Faculty of Medicine and Health, The University of Sydney, Sydney, New South Wales, Australia
- Charles Perkins Centre, The University of Sydney, Sydney, New South Wales, Australia
| | - Alexander Mok
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
- Singapore Institute for Clinical Sciences, Agency for Science, Technology and Research, Singapore
| | - Andrea Smith
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
| | - Marko Tainio
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
- Sustainable Urban Programme, The Finnish Environment Institute, Helsinki, Finland
- Systems Research Institute, Polish Academy of Sciences, Warsaw, Poland
| | - Søren Brage
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
| | - James Woodcock
- MRC Epidemiology Unit, University of Cambridge, Cambridge, England
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The Endocannabinoid System and Physical Activity—A Robust Duo in the Novel Therapeutic Approach against Metabolic Disorders. Int J Mol Sci 2022; 23:ijms23063083. [PMID: 35328503 PMCID: PMC8948925 DOI: 10.3390/ijms23063083] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/09/2022] [Accepted: 03/09/2022] [Indexed: 01/27/2023] Open
Abstract
Rapidly increasing worldwide prevalence of obesity and related pathologies encompassing coronary heart disease, hypertension, metabolic syndrome, or type 2 diabetes constitute serious threats to global health and are associated with a significantly elevated risk of premature death. Considering the enormous burden of these pathologies, novel therapeutic and preventive patterns are indispensable. Dysregulation of one of the most complex biological systems in the human body namely, the endocannabinoid system (ECS) may result in metabolic imbalance and development of insulin resistance, type 2 diabetes, or non-alcoholic fatty liver disease. Furthermore, many studies showed that physical exercises, depending on their type, intensity, and frequency, exert various alterations within the ECS. Emerging evidence suggests that targeting the ECS via physical activity may produce robust beneficial effects on the course of metabolic pathologies. However, the data showing a direct correlation between the ECS and physical activity in the aspect of metabolic health are very scarce. Therefore, the aim of this review was to provide the most up-to-date state of knowledge about the interplay between the ECS activity and physical exercises in the novel therapeutic and preventive approach toward metabolic pathologies. We believe that this paper, at least in part, will fulfill the existing gap in knowledge and encourage researchers to further explore this very complex yet interesting link between the ECS, its action in physical activity, and subsequent positive outcomes for metabolic health.
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Lavin KM, Coen PM, Baptista LC, Bell MB, Drummer D, Harper SA, Lixandrão ME, McAdam JS, O’Bryan SM, Ramos S, Roberts LM, Vega RB, Goodpaster BH, Bamman MM, Buford TW. State of Knowledge on Molecular Adaptations to Exercise in Humans: Historical Perspectives and Future Directions. Compr Physiol 2022; 12:3193-3279. [PMID: 35578962 PMCID: PMC9186317 DOI: 10.1002/cphy.c200033] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
For centuries, regular exercise has been acknowledged as a potent stimulus to promote, maintain, and restore healthy functioning of nearly every physiological system of the human body. With advancing understanding of the complexity of human physiology, continually evolving methodological possibilities, and an increasingly dire public health situation, the study of exercise as a preventative or therapeutic treatment has never been more interdisciplinary, or more impactful. During the early stages of the NIH Common Fund Molecular Transducers of Physical Activity Consortium (MoTrPAC) Initiative, the field is well-positioned to build substantially upon the existing understanding of the mechanisms underlying benefits associated with exercise. Thus, we present a comprehensive body of the knowledge detailing the current literature basis surrounding the molecular adaptations to exercise in humans to provide a view of the state of the field at this critical juncture, as well as a resource for scientists bringing external expertise to the field of exercise physiology. In reviewing current literature related to molecular and cellular processes underlying exercise-induced benefits and adaptations, we also draw attention to existing knowledge gaps warranting continued research effort. © 2021 American Physiological Society. Compr Physiol 12:3193-3279, 2022.
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Affiliation(s)
- Kaleen M. Lavin
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Center for Human Health, Resilience, and Performance, Institute for Human and Machine Cognition, Pensacola, Florida, USA
| | - Paul M. Coen
- Translational Research Institute for Metabolism and Diabetes, Advent Health, Orlando, Florida, USA
- Sanford Burnham Prebys Medical Discovery Institute, Orlando, Florida, USA
| | - Liliana C. Baptista
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Medicine, Division of Gerontology, Geriatrics and Palliative Care, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Margaret B. Bell
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Devin Drummer
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Sara A. Harper
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Medicine, Division of Gerontology, Geriatrics and Palliative Care, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Manoel E. Lixandrão
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Jeremy S. McAdam
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Samia M. O’Bryan
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Sofhia Ramos
- Translational Research Institute for Metabolism and Diabetes, Advent Health, Orlando, Florida, USA
- Sanford Burnham Prebys Medical Discovery Institute, Orlando, Florida, USA
| | - Lisa M. Roberts
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Medicine, Division of Gerontology, Geriatrics and Palliative Care, The University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Rick B. Vega
- Translational Research Institute for Metabolism and Diabetes, Advent Health, Orlando, Florida, USA
- Sanford Burnham Prebys Medical Discovery Institute, Orlando, Florida, USA
| | - Bret H. Goodpaster
- Translational Research Institute for Metabolism and Diabetes, Advent Health, Orlando, Florida, USA
- Sanford Burnham Prebys Medical Discovery Institute, Orlando, Florida, USA
| | - Marcas M. Bamman
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Cell, Developmental, and Integrative Biology, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Center for Human Health, Resilience, and Performance, Institute for Human and Machine Cognition, Pensacola, Florida, USA
| | - Thomas W. Buford
- Center for Exercise Medicine, The University of Alabama at Birmingham, Birmingham, Alabama, USA
- Department of Medicine, Division of Gerontology, Geriatrics and Palliative Care, The University of Alabama at Birmingham, Birmingham, Alabama, USA
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Investigating the Long-Term Effect of an Interdisciplinary Multimodal Rehabilitation Program on Levels of Bioactive Lipids and Telomerase Activity in Blood from Patients with Chronic Pain. J Clin Med 2022; 11:jcm11051291. [PMID: 35268382 PMCID: PMC8911430 DOI: 10.3390/jcm11051291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 02/23/2022] [Accepted: 02/23/2022] [Indexed: 02/01/2023] Open
Abstract
Mechanism-based diagnosis and therapies for chronic pain are lacking. However, bio-psycho-social interventions such as interdisciplinary multimodal rehabilitation programs (IPRPs) have shown to be relatively effective treatments. In this context we aim to investigate the effects of IPRP on the changes in levels of bioactive lipids and telomerase activity in plasma, and if these changes are associated with changes in pain intensity and psychological distress. This exploratory study involves 18 patients with complex chronic pain participating in an IPRP. Self-reports of pain, psychological distress, physical activity, and blood samples were collected before the IPRP and at a six-month follow-up. Levels of arachidonoylethanolamide (AEA) and 2-arachidonoylglycerol (2-AG), palmitoylethanolamide (PEA), oleoylethanolamide (OEA), stearoylethanolamide (SEA), and telomerase activity were measured. Pain intensity was decreased, and SEA levels were increased at the six-month follow up. A significant correlation existed between changes in SEA levels and pain intensity. AEA levels, were inversely correlated with physical activity. Furthermore, 2-AG and telomerase activity was significantly correlated at the six-month follow-up. This study confirms that IPRP is relatively effective for reduction in chronic pain. Changes in SEA were correlated with changes in pain intensity, which might indicate that SEA changes reflect the pain reduction effects of IPRP.
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Babaei P, Azari HB. Exercise Training Improves Memory Performance in Older Adults: A Narrative Review of Evidence and Possible Mechanisms. Front Hum Neurosci 2022; 15:771553. [PMID: 35153701 PMCID: PMC8829997 DOI: 10.3389/fnhum.2021.771553] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 12/16/2021] [Indexed: 12/15/2022] Open
Abstract
Graphical AbstractExercise, neurotransmitters, growth factors, myokines, and potential effects on the brain.
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Affiliation(s)
- Parvin Babaei
- Neuroscience Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
- Cellular and Molecular Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
- Department of Physiology, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
- *Correspondence: Parvin Babaei,
| | - Helya Bolouki Azari
- Neuroscience Research Center, School of Medicine, Guilan University of Medical Sciences, Rasht, Iran
- Department of Physiology, Tehran University of Medical Sciences, Tehran, Iran
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Siebers M, Biedermann SV, Fuss J. Do Endocannabinoids Cause the Runner’s High? Evidence and Open Questions. Neuroscientist 2022; 29:352-369. [PMID: 35081831 PMCID: PMC10159215 DOI: 10.1177/10738584211069981] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The runner’s high is an ephemeral feeling some humans experience during and after endurance exercise. Recent evidence in mice suggests that a runner’s high depends on the release of endocannabinoids (eCBs) during exercise. However, little is known under what circumstances eCBs are released during exercise in humans. This systematic review sampled all data from clinical trials in humans on eCB levels following exercise from the discovery of eCBs until April 20, 2021. PubMed/NCBI, Ovid MEDLINE, and Cochrane library were searched systematically and reviewed following the PRISMA guidelines. From 278 records, 21 met the inclusion criteria. After acute exercise, 14 of 17 studies detected an increase in eCBs. In contrast, after a period of long-term endurance exercise, four articles described a decrease in eCBs. Even though several studies demonstrated an association between eCB levels and features of the runner’s high, reliable proof of the involvement of eCBs in the runner’s high in humans has not yet been achieved due to methodological hurdles. In this review, we suggest how to advance the study of the influence of eCBs on the beneficial effects of exercise and provide recommendations on how endocannabinoid release is most likely to occur under laboratory conditions.
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Affiliation(s)
- Michael Siebers
- Institute of Forensic Psychiatry and Sex Research, University of Duisburg-Essen, Essen, Germany
- Human Behavior Laboratory, Institute for Sex Research, Sexual Medicine and Forensic Psychiatry, Center of Psychosocial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sarah V. Biedermann
- Department of Psychiatry and Psychotherapy, Center of Psychosocial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Johannes Fuss
- Institute of Forensic Psychiatry and Sex Research, University of Duisburg-Essen, Essen, Germany
- Human Behavior Laboratory, Institute for Sex Research, Sexual Medicine and Forensic Psychiatry, Center of Psychosocial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
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Meyer JD, Perkins SL, Brower CS, Lansing JE, Slocum JA, Thomas EBK, Murray TA, Lee DC, Wade NG. Feasibility of an Exercise and CBT Intervention for Treatment of Depression: A Pilot Randomized Controlled Trial. Front Psychiatry 2022; 13:799600. [PMID: 35599775 PMCID: PMC9115753 DOI: 10.3389/fpsyt.2022.799600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 01/20/2022] [Indexed: 11/16/2022] Open
Abstract
Depression (DEP) is prevalent and current treatments are ineffective for many people. This pilot study's purpose was to assess the feasibility, acceptability, and plausible efficacy of an 8-week intervention employing 30 min of prescribed moderate intensity exercise ("ActiveCBT") compared to 30 min of usual activities ("CalmCBT") immediately prior to weekly online CBT sessions. Ten adults with DSM-5-diagnosed current DEP were randomized to groups and completed: an intake assessment, eight weekly CBT sessions, final assessment, and 3-month follow-up. ActiveCBT participants were prescribed 30-min of moderate exercise immediately prior to each standardized 50-min CBT session. CalmCBT participants continued with normal activities for 30 min before therapy. Questionnaires regarding DEP symptom severity (Patient Health Questionnaire-9 [PHQ-9]), between-session effectiveness (Behavioral Activation for Depression Survey [BADS], Automatic Thoughts Questionnaire [ATQ]), in-session effectiveness (Working Alliance Inventory-Short Revised [WAI]), and state anhedonia (Dimension Analog Rating Scale [DARS], Visual Analog Scale [VAS]; assessed 3 times: before Active/Calm condition, after, and after therapy) were completed each week. Therapy fidelity ratings were independently coded via a standardized codebook. The Structured Clinical Interview for DSM-5 (SCID) and Hamilton Rating Scale for Depression (HAMD) were used to assess DEP at intake, final, and 3-month follow-up. We found strong feasibility and acceptability (100% adherence, 100% retention at final visit, 74.6% therapy fidelity, and high patient satisfaction ratings). Differences between groups favoring ActiveCBT in anhedonia (DARS, Hedges' g = 0.92; VAS, g = 3.16), within- (WAI, g = 0.1.10), and between-session effectiveness (ATQ g = -0.65; BADS g = -1.40), suggest plausible efficacy of ActiveCBT for enhancing CBT. DEP rates were reduced in both groups from baseline to final (60% MDD SCID remission) and at follow up (Active: 40%; Calm: 25%). Larger and potentially quicker symptom improvement was found favoring the Active condition to the final visit (HAMD, between-group changes g = -1.33; PHQ-9, g = -0.62), with small differences remaining at follow-up (HAMD, g = -0.45; PHQ-9, g = -0.19). Exercise priming appears acceptable and plausibly efficacious for enhancing mechanisms of CBT and overall outcomes, though the present small sample precludes efficacy determinations. It appears feasible to conduct a randomized controlled trial comparing ActiveCBT to CalmCBT. Future trials evaluating this potentially promising treatment approach and mediating mechanisms are warranted.
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Affiliation(s)
- Jacob D Meyer
- Department of Kinesiology, Iowa State University, Ames, IA, United States
| | - Seana L Perkins
- Department of Kinesiology, Iowa State University, Ames, IA, United States
| | - Cassandra S Brower
- Department of Kinesiology, Iowa State University, Ames, IA, United States
| | - Jeni E Lansing
- Department of Kinesiology, Iowa State University, Ames, IA, United States
| | - Julia A Slocum
- Department of Kinesiology, Iowa State University, Ames, IA, United States.,Department of Psychology, Iowa State University, Ames, IA, United States
| | - Emily B K Thomas
- Department of Psychological and Brain Sciences, University of Iowa, Iowa City, IA, United States
| | - Thomas A Murray
- Division of Biostatistics, University of Minnesota, Minneapolis, MN, United States
| | - Duck-Chul Lee
- Department of Kinesiology, Iowa State University, Ames, IA, United States
| | - Nathaniel G Wade
- Department of Psychology, Iowa State University, Ames, IA, United States
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Martínez-Aguirre C, Cinar R, Rocha L. Targeting Endocannabinoid System in Epilepsy: For Good or for Bad. Neuroscience 2021; 482:172-185. [PMID: 34923038 DOI: 10.1016/j.neuroscience.2021.12.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Revised: 11/29/2021] [Accepted: 12/09/2021] [Indexed: 02/07/2023]
Abstract
Epilepsy is a neurological disorder with a high prevalence worldwide. Several studies carried out during the last decades indicate that the administration of cannabinoids as well as the activation of the endocannabinoid system (ECS) represent a therapeutic strategy to control epilepsy. However, there are controversial studies indicating that activation of ECS results in cell damage, inflammation and neurotoxicity, conditions that facilitate the seizure activity. The present review is focused to present findings supporting this issue. According to the current discrepancies, it is relevant to elucidate the different effects induced by the activation of ECS and determine the conditions under which it facilitates the seizure activity.
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Affiliation(s)
| | - Resat Cinar
- Section on Fibrotic Disorders, National Institute on Alcohol Abuse and Alcoholism (NIAAA), National Institutes of Health (NIH), Rockville, USA
| | - Luisa Rocha
- Department of Pharmacobiology, Center for Research and Advanced Studies, Mexico City, Mexico.
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The effects of leisure time physical activity on depression among older women depend on intensity and frequency. J Affect Disord 2021; 295:822-830. [PMID: 34706452 DOI: 10.1016/j.jad.2021.08.142] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 07/22/2021] [Accepted: 08/27/2021] [Indexed: 11/20/2022]
Abstract
BACKGROUND Leisure time physical activity (LTPA) is beneficial for late-life depression (LLD). The main purpose of this study was to estimate the associations between LTPA parameters (intensity, duration, frequency) and LLD. METHODS Through the 2018 Women Health Needs Survey, data on 1,892 women aged 55-70 in Hunan, China, were studied. Depression was measured by the 9-item Patient Health Questionnaire (PHQ-9). Self-reported LTPA parameters were collected. Binary logistic regression models were used to compute odds ratios (OR) for LTPA for predicting depression. Sensitivity analyses were conducted to examine the effect of missing values. RESULTS Moderate LTPA volume (OR = 0.582, p = 0.027, 95% CI [0.360-0.941] for 150-299 min/week and OR = 0.392, p = 0.002, 95% CI [0.215-0.714] for ≥300 min/week) was associated with reduced depression, while vigorous LTPA could increase the risk (OR = 2.414, p = 0.029, 95% CI [1.095-5.325] for <75 min/week and OR = 3.824, p = 0.007, 95% CI [1.439-10.158] for ≥75 min/week). Frequent (6-7 days/week), moderate LTPA had a lower risk (OR = 0.570, p = 0.021, 95% CI [0.353-0.918]), while frequent (≥3 days/week), vigorous LTPA increased the risk (OR = 5.103, p = 0.001, 95% CI [1.977-13.172]). The adjusted relationship between the duration and depression was not observed. The results were supported by the sensitivity analysis based on missing value replacement. LIMITATIONS In this cross-sectional study, LTPA data were self-reported and no data on light LTPA were collected. CONCLUSIONS Moderate LTPA, associated with mental health benefits, should be recommended for older women instead of vigorous LTPA.
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Hughes L, Grant I, Patterson SD. Aerobic exercise with blood flow restriction causes local and systemic hypoalgesia and increases circulating opioid and endocannabinoid levels. J Appl Physiol (1985) 2021; 131:1460-1468. [PMID: 34498944 DOI: 10.1152/japplphysiol.00543.2021] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
This study examined the effect of aerobic exercise with and without blood flow restriction (BFR) on exercise-induced hypoalgesia and endogenous opioid and endocannabinoid systems. In a randomized crossover design, pain-free individuals performed 20 min of cycling in four experimental trials: 1) low-intensity aerobic exercise (LI-AE) at 40% V̇o2max; 2) LI-AE with low-pressure BFR (BFR40); 3) LI-AE with high-pressure BFR (BFR80); and 4) high-intensity aerobic exercise (HI-AE) at 70% V̇o2max. Pressure pain thresholds (PPTs) were assessed before and 5 min postexercise. Circulating concentrations of beta-endorphin and 2-arachidonoylglycerol were assessed before and 10 min postexercise. In the exercising legs, postexercise PPTs were increased following BFR40 and BFR80 compared with LI-AE (23-32% vs. 1-2% increase, respectively). The increase in PPTs was comparable to HI-AE (17-20% increase) with BFR40 and greater with BFR80 (30-32% increase). Both BFR80 and HI-AE increased PPTs in remote areas of the body (increase of 26-28% vs. 19-21%, respectively). Postexercise circulating beta-endorphin concentration was increased following BFR40 (11%) and HI-AE (14%), with the greatest change observed following BFR80 (29%). Postexercise circulating 2-arachidonoylglycerol concentration was increased following BFR40 (22%) and BFR80 (20%), with the greatest change observed following HI-AE (57%). Addition of BFR to LI-AE can trigger both local and systemic hypoalgesia that is not observed follow LI-AE alone and activate endogenous opioid and endocannabinoid systems of pain inhibition. Compared with HI-AE, local and systemic hypoalgesia following LI-AE with high-pressure BFR is greater and comparable, respectively. LI-AE with BFR may help pain management in load-compromised individuals.NEW & NOTEWORTHY We have shown that performing blood flow restriction (BFR) during low-intensity aerobic exercise can trigger local and systemic hypoalgesia, which is not typically observed with this intensity of exercise. High-pressure BFR triggers greater and comparable hypoalgesia than high-intensity aerobic exercise in the exercising limbs and remote areas of the body, respectively. Performing BFR during low-intensity aerobic exercise activates the opioid and endocannabinoid systems, providing novel insight into potential mechanisms of hypoalgesia with BFR exercise.
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Affiliation(s)
- Luke Hughes
- Centre for Applied Performance Sciences, Faculty of Sport, Allied Health, and Performance Sciences, St. Mary's University, London, United Kingdom
| | - Ian Grant
- Centre for Applied Performance Sciences, Faculty of Sport, Allied Health, and Performance Sciences, St. Mary's University, London, United Kingdom
| | - Stephen David Patterson
- Centre for Applied Performance Sciences, Faculty of Sport, Allied Health, and Performance Sciences, St. Mary's University, London, United Kingdom
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Schaumberg K, Peters D, Ahrenholtz R, Crombie KM, Zhang R, Gorrell S. Registered report: A pilot investigation of acute exercise response among girls and young women with and without eating disorders. Int J Eat Disord 2021; 54:2057-2065. [PMID: 34323294 PMCID: PMC8595629 DOI: 10.1002/eat.23587] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 07/14/2021] [Accepted: 07/15/2021] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Driven exercise (DEx) is a serious and common feature of eating disorders (EDs), but current understanding of factors that give rise to and maintain DEx is limited. DEx may be reinforced through its effects on the threat reduction and reward systems. The current protocol is designed to evaluate acute psychobiological response to exercise among female participants (age 16-22) with and without EDs. METHOD Twenty medically-stable participants with restrictive-spectrum EDs and 20 healthy control (HC) participants will complete study screening and three task visits which will include two 30-minute bouts of aerobic exercise. RESULTS We aim to validate and demonstrate feasibility of two tasks capturing exercise response in this sample. Further, we will estimate the degree to which a bout of exercise impacts state body image, affect, and circulating concentrations of biological markers among participants, and we will examine whether the impact of exercise on psychological outcomes may differ across ED and HC groups. DISCUSSION Completion of this project will contribute to the conceptualization of DEx and how individuals' acute biological and affective responses to exercise contribute to risk for and maintenance of DEx.
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Affiliation(s)
- Katherine Schaumberg
- University of Wisconsin - Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, Wisconsin, United States of America, 53719-1176
| | - Danielle Peters
- University of Wisconsin - Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, Wisconsin, United States of America, 53719-1176
| | - Rachel Ahrenholtz
- University of Wisconsin - Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, Wisconsin, United States of America, 53719-1176
| | - Kevin M. Crombie
- University of Wisconsin - Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, Wisconsin, United States of America, 53719-1176
| | - Ruisu Zhang
- University of Wisconsin - Madison, Department of Psychiatry, 6001 Research Park Boulevard, Madison, Wisconsin, United States of America, 53719-1176
| | - Sasha Gorrell
- University of California - San Francisco, Department of Psychiatry and Behavioral Sciences, 401 Parnassus Avenue, San Francisco, California, United States of America, 94143
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Crombie KM, Sartin-Tarm A, Sellnow K, Ahrenholtz R, Lee S, Matalamaki M, Almassi NE, Hillard CJ, Koltyn KF, Adams TG, Cisler JM. Exercise-induced increases in Anandamide and BDNF during extinction consolidation contribute to reduced threat following reinstatement: Preliminary evidence from a randomized controlled trial. Psychoneuroendocrinology 2021; 132:105355. [PMID: 34280820 PMCID: PMC8487992 DOI: 10.1016/j.psyneuen.2021.105355] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/06/2021] [Accepted: 07/07/2021] [Indexed: 12/27/2022]
Abstract
INTRODUCTION We recently demonstrated that moderate-intensity aerobic exercise delivered during the consolidation of fear extinction learning reduced threat expectancy during a test of extinction recall among women with posttraumatic stress disorder (PTSD). These findings suggest that exercise may be a potential candidate for improving the efficacy of exposure-based therapies, which are hypothesized to work via the mechanisms of fear extinction learning. The purpose of this secondary analysis was to examine whether exercise-induced increases in circulating concentrations of candidate biomarkers: endocannabinoids (anandamide [AEA]; 2-arachidonoylglycerol [2-AG], brain-derived neurotrophic factor (BDNF), and homovanillic acid (HVA), mediate the effects of exercise on extinction recall. METHODS Participants (N = 35) completed a 3-day fear acquisition (day 1), extinction (day 2), and extinction recall (day 3) protocol, in which participants were randomly assigned to complete either moderate-intensity aerobic exercise (EX) or a light-intensity control (CON) condition following extinction training (day 2). Blood was obtained prior to and following EX or CON. Threat expectancy ratings during tests of extinction recall (i.e., initial fear recall and fear recall following reinstatement) were obtained 24 h following EX or CON. Mediation was tested using linear-mixed effects models and bootstrapping of the indirect effect. RESULTS Circulating concentrations of AEA and BDNF (but not 2-AG and HVA) were found to mediate the relationship between moderate-intensity aerobic exercise and reduced threat expectancy ratings following reinstatement (AEA 95% CI: -0.623 to -0.005; BDNF 95% CI: -0.941 to -0.005). CONCLUSIONS Exercise-induced increases in peripheral AEA and BDNF appear to play a role in enhancing consolidation of fear extinction learning, thereby leading to reduced threat expectancies following reinstatement among women with PTSD. Future mechanistic research examining these and other biomarkers (e.g., brain-based biomarkers) is warranted.
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Affiliation(s)
- Kevin M. Crombie
- University of Wisconsin, Department of Psychiatry, 6001
Research Park Boulevard, Madison, Wisconsin, United States of America,
53719-1176
| | - Anneliis Sartin-Tarm
- University of Wisconsin, Department of Psychiatry, 6001
Research Park Boulevard, Madison, Wisconsin, United States of America,
53719-1176
| | - Kyrie Sellnow
- University of Wisconsin, Department of Psychiatry, 6001
Research Park Boulevard, Madison, Wisconsin, United States of America,
53719-1176
| | - Rachel Ahrenholtz
- University of Wisconsin, Department of Psychiatry, 6001
Research Park Boulevard, Madison, Wisconsin, United States of America,
53719-1176
| | - Sierra Lee
- University of Wisconsin, Department of Psychiatry, 6001
Research Park Boulevard, Madison, Wisconsin, United States of America,
53719-1176
| | - Megan Matalamaki
- University of Wisconsin, Department of Psychiatry, 6001
Research Park Boulevard, Madison, Wisconsin, United States of America,
53719-1176
| | - Neda E. Almassi
- University of Wisconsin, Department of Kinesiology, 285 Med
Sci, 1300 University Ave, Madison, WI, United States of America, 53706-1121
| | - Cecilia J. Hillard
- Medical College of Wisconsin, Neuroscience Research Center,
Department of Pharmacology and, Toxicology, 8701 Watertown Plank Rd., Milwaukee, WI
53226
| | - Kelli F. Koltyn
- University of Wisconsin, Department of Kinesiology, 285 Med
Sci, 1300 University Ave, Madison, WI, United States of America, 53706-1121
| | - Tom G. Adams
- University of Kentucky, Department of Psychology, 105
Kastle Hill, Lexington, Kentucky, United States of America, 40506-0044,Yale School of Medicine, Department of Psychiatry, 300
George St., New Haven, CT, United States of America, 06511,National Center for PTSD, Clinical Neurosciences Division,
VA CT Healthcare System, 950 Campbell Avenue, West Haven, CT, United States of
America, 06516
| | - Josh M. Cisler
- University of Texas at Austin, Department of Psychiatry and
Behavioral Sciences, 1601 Trinity St, Bldg B, Austin, TX, United States of America,
78712
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37
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Exercise behavior patterns and associations with subjective well-being during the COVID-19 pandemic: A cross-sectional study in Brazil. Eur J Integr Med 2021; 46:101374. [PMID: 34493949 PMCID: PMC8413084 DOI: 10.1016/j.eujim.2021.101374] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 08/05/2021] [Accepted: 08/18/2021] [Indexed: 11/26/2022]
Abstract
Introduction The COVID-19 pandemic has affected the behavior and practice of planned and structured physical exercises. This study aimed to investigate the association between changes in physical exercise behavior and subjective well-being during the COVID-19 pandemic in Brazil. Methods This cross-sectional study was performed in Brazil and included a total of 595 individuals recruited through social media platforms, personal and professional contacts. Each participant responded to self-completed questionnaire via an online survey between March 29 and May 7, 2020. The characteristics of physical exercise (frequency, intensity, and duration) were collected before and during the pandemic. The subjective state of mood was measured through the Profile of Mood States (POMS) questionnaire during the pandemic. A generalized linear model was employed for the analysis. Results Exercising during the pandemic only promoted protective effects on the subjective mood. An exercise frequency of 3-5 days/week was associated with improved vigor and between 6-7 days/week with improved vigor and total mood when compared to not exercising at all (p < .005). A moderate intensity was associated with improved vigor, and a high intensity with improved vigor, total mood, and less fatigue in comparison to low-intensity exercise programs (p < 0.05). Maintaining the same duration of exercise sessions during the pandemic was associated with lower scores of depression/anxiety, fatigue and irritability, and improved vigor and total mood, while performing longer sessions with improved vigor when compared to short exercise sessions (p < .005). Conclusion Regular exercising during the pandemic promotes positive changes in the subjective well-being. Our results reinforce the need for adopting and maintaining a physical exercise routine during the COVID-19 pandemic as a protective effect on mental health.
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Fitzgerald JM, Chesney SA, Lee TS, Brasel K, Larson CL, Hillard CJ, deRoon-Cassini TA. Circulating endocannabinoids and prospective risk for depression in trauma-injury survivors. Neurobiol Stress 2021; 14:100304. [PMID: 33614866 PMCID: PMC7876629 DOI: 10.1016/j.ynstr.2021.100304] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 01/19/2021] [Accepted: 01/30/2021] [Indexed: 12/19/2022] Open
Abstract
Biological mechanisms associated with response to trauma may impact risk for depression. One such mechanism is endocannabinoid signaling (eCB), a neuromodulatory system comprised of the CB1 subtype of cannabinoid receptors (CB1R), encoded by the CNR1 gene, and two primary endogenous ligands: 2-arachidonoylglycerol (2-AG) and N-arachidonylethanolamine (AEA), hydrolyzed by monoacylglycerol lipase (gene name MGLL) and fatty acid amide hydrolase (gene name FAAH). Preclinical data suggest that eCB/CB1R signaling acts as a stress buffer and its loss or suppression increases depression-like behaviors. We examined circulating concentrations of the eCBs (2-AG and AEA) days and six months after a traumatic injury as a marker of eCB/CB1R signaling and as predictors of Center for Epidemiologic Studies of Depression Scale-Revised [CESD-R] scores as a measure of depression severity six months after injury. We also explored associations of CNR1, FAAH, and MGLL genetic variance with depression severity at six months. Results from hierarchical multiple linear regressions showed that higher 2-AG serum concentrations after trauma predicted greater depression at six months (β = 0.23, p = 0.007); neither AEA after trauma, nor 2-AG and AEA at six months were significant predictors (p's > 0.305). Carriers of minor allele for the putative single nucleotide polymorphism in the CNR1 gene rs806371 (β = 0.19, p = 0.024) experienced greater depression at six months. These data suggest that the eCB signaling system is highly activated following trauma and that eCB/CB1R activity contributes to long-term depression risk.
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Affiliation(s)
| | - Samantha A. Chesney
- Froedtert Memorial Lutheran Hospital - Neurological Rehabilitation Services, Milwaukee, WI, USA
| | | | - Karen Brasel
- Oregon Health & Science University, Portland, OR, USA
| | - Christine L. Larson
- University of Wisconsin – Milwaukee, Department of Psychology, Milwaukee, WI, USA
| | - Cecilia J. Hillard
- Medical College of Wisconsin, Neuroscience Research Center and Department of Pharmacology and Toxicology, Milwaukee, WI, USA
| | - Terri A. deRoon-Cassini
- Medical College of Wisconsin, Department of Surgery, Division of Trauma & Acute Care Surgery, Milwaukee, WI, USA
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Crombie KM, Sartin-Tarm A, Sellnow K, Ahrenholtz R, Lee S, Matalamaki M, Adams TG, Cisler JM. Aerobic exercise and consolidation of fear extinction learning among women with posttraumatic stress disorder. Behav Res Ther 2021; 142:103867. [PMID: 34020153 DOI: 10.1016/j.brat.2021.103867] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 03/21/2021] [Accepted: 04/16/2021] [Indexed: 12/30/2022]
Abstract
This study tested whether aerobic exercise delivered during the consolidation window following fear extinction learning reduces the return of fear among women with posttraumatic stress disorder (PTSD). Participants (n=35) completed an initial clinical assessment followed by a 3-day fear acquisition, extinction, and recall protocol. On day 1, participants completed a fear acquisition training task in which one geometric shape (conditioning stimulus; CS+) was paired (with 50% probability) with a mild electric shock (unconditioned stimulus; US), while a different shape (CS-) was never paired with the US. On day 2 (24 h later), participants completed a fear extinction training task in which the CS+ no longer predicted administration of the US. Shortly following extinction, participants were randomly assigned to complete either moderate-intensity aerobic exercise (EX) or a light-intensity exercise control (CON) condition. On day 3 (24 h later), participants completed fear recall tests assessing the return of fear (spontaneous recovery, renewal, and reinstatement). Fear responding was assessed via threat expectancy ratings and skin conductance responses (SCR). In the threat expectancy ratings, there were no significant differences between groups in spontaneous recovery; however, EX significantly (p=.02) reduced threat expectancy ratings following reinstatement relative to CON. In SCR measures, there were no significant differences between groups in spontaneous recovery, renewal, or reinstatement. These results support a role for moderate-intensity aerobic exercise during the consolidation window in reducing threat expectations following reinstatement in women with PTSD. Research should continue to examine exercise as a potential method for improving the efficacy of exposure-based therapies. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT04113798.
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Affiliation(s)
- Kevin M Crombie
- University of Wisconsin, Department of Psychiatry, 6001 Research Park Boulevard, Madison, WI, 53719-1176, USA.
| | - Anneliis Sartin-Tarm
- University of Wisconsin, Department of Psychiatry, 6001 Research Park Boulevard, Madison, WI, 53719-1176, USA
| | - Kyrie Sellnow
- University of Wisconsin, Department of Psychiatry, 6001 Research Park Boulevard, Madison, WI, 53719-1176, USA
| | - Rachel Ahrenholtz
- University of Wisconsin, Department of Psychiatry, 6001 Research Park Boulevard, Madison, WI, 53719-1176, USA
| | - Sierra Lee
- University of Wisconsin, Department of Psychiatry, 6001 Research Park Boulevard, Madison, WI, 53719-1176, USA
| | - Megan Matalamaki
- University of Wisconsin, Department of Psychiatry, 6001 Research Park Boulevard, Madison, WI, 53719-1176, USA
| | - Tom G Adams
- University of Kentucky, Department of Psychology, 105 Kastle Hill, Lexington, KY, 40506-0044, USA; Yale School of Medicine, Department of Psychiatry, 300 George St., New Haven, CT, 06511, USA; National Center for PTSD, Clinical Neurosciences Division, VA CT Healthcare System, 950 Campbell Avenue, West Haven, CT, 06516, USA.
| | - Josh M Cisler
- University of Wisconsin, Department of Psychiatry, 6001 Research Park Boulevard, Madison, WI, 53719-1176, USA.
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The Effect of Acute Aerobic Exercise on Divergent and Convergent Thinking and Its Influence by Mood. Brain Sci 2021; 11:brainsci11050546. [PMID: 33925304 PMCID: PMC8145661 DOI: 10.3390/brainsci11050546] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 02/07/2023] Open
Abstract
Abundant evidence shows that various forms of physical exercise, even conducted briefly, may improve cognitive functions. However, the effect of physical exercise on creative thinking remains under-investigated, and the role of mood in this effect remains unclear. In the present study, we set out to investigate the effect of an acute bout of aerobic exercise on divergent and convergent thinking and whether this effect depends on the post-exercise mood. Forty healthy young adults were randomly assigned to receive a 15-min exercise or control intervention, before and after which they conducted an alternate use test measuring divergent thinking and an insight problem-solving task measuring convergent thinking. It was found that exercise enhanced divergent thinking in that it increased flexibility and fluency. Importantly, these effects were not mediated by the post-exercise mood in terms of pleasure and vigor. In contrast, the effect on convergent thinking depended on subjects' mood after exercise: subjects reporting high vigor tended to solve more insight problems that were unsolved previously, while those reporting low vigor became less capable of solving previously unsolved problems. These findings suggest that aerobic exercise may affect both divergent and convergent thinking, with the former being mood-independent and the latter mood-dependent. If these findings can be replicated with more rigorous studies, engaging in a bout of mood, particularly vigor-enhancing aerobic exercise, may be considered a useful strategy for gaining insights into previously unsolved problems.
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Neurobiological Processes Induced by Aerobic Exercise through the Endocannabinoidome. Cells 2021; 10:cells10040938. [PMID: 33920695 PMCID: PMC8072750 DOI: 10.3390/cells10040938] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2021] [Revised: 03/31/2021] [Accepted: 04/13/2021] [Indexed: 12/23/2022] Open
Abstract
Evidence suggesting the triangulation of the endocannabinoid system, exercise, and neurological health is emerging. In addition to the endocannabinoids N-arachidonoylethanolamine (anandamide; AEA) and 2-arachidonoylglycerol (2-AG), the expanded endocannabinoid system, known as the endocannabinoidome (eCBome), appears to be an important player in this relationship. The eCBome includes several endocannabinoid-like mediators such as N-acylethanolamines and 2-monoacylglycerols, the enzymes involved in their biosynthesis and degradation, and the receptors they affect. This review aims to relate the functional interactions between aerobic exercise, and the molecular and cellular pathways related to endocannabinoids, in the hypothalamus, hippocampus, and the periphery, with special attention given to associations with emotional state, cognition, and mental health. Given the well-documented roles of many eCBome members in regulating stress and neurological processes, we posit that the eCBome is an important effector of exercise-induced central and peripheral adaptive mechanisms that benefit mental health. Gut microbiota imbalance, affecting the gut-brain axis and metabolism, also influences certain eCBome-modulated inflammation pathways. The integrity of the gut microbiota could thus be crucial in the onset of neuroinflammation and mental conditions. Further studies on how the modulation by exercise of the peripheral eCBome affects brain functions could reveal to be key elements in the prevention and treatment of neuropsychological disorders.
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Siebers M, Biedermann SV, Bindila L, Lutz B, Fuss J. Exercise-induced euphoria and anxiolysis do not depend on endogenous opioids in humans. Psychoneuroendocrinology 2021; 126:105173. [PMID: 33582575 DOI: 10.1016/j.psyneuen.2021.105173] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 10/22/2022]
Abstract
A runner's high describes a sense of well-being during endurance exercise characterized by euphoria and anxiolysis. It has been a widespread belief that the release of endogenous opioids, such as endorphins, underlie a runner's high. However, exercise leads to the release of two classes of rewarding molecules, endocannabinoids (eCBs) and opioids. In mice, we have shown that core features of a runner's high depend on cannabinoid receptors but not opioid receptors. In the present study, we aimed to corroborate in humans that endorphins do not play a significant role in the underlying mechanism of a runner's high. Thus, we investigated whether the development of two core features of a runner's high, euphoria and reduced anxiety levels, depend on opioid signaling by using the opioid receptor antagonist naltrexone (NAL) in a double-blind, randomized, placebo (PLA)-controlled experiment. Participants (N = 63) exhibited increased euphoria and decreased anxiety after 45 min of running (RUN) on a treadmill in a moderate-intensity range compared to walking (WALK). RUN led to higher plasma levels of the eCBs anandamide (AEA) and 2-arachidonoglycerol (2-AG). Opioid blockade did not prevent the development of euphoria and reduced anxiety as well as elevation of eCB levels following exercise. Moreover, the fraction of participants reporting a subjective runner's high was comparable in the NAL and PLA-treated group. Therefore, this study indicates that the development of a runner's high does not depend on opioid signaling in humans, but makes eCBs strong candidates in humans, as previously shown in mice.
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Affiliation(s)
- Michael Siebers
- Human Behavior Laboratory, Institute for Sex Research, Sexual Medicine and Forensic Psychiatry, Center of Psychosocial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sarah V Biedermann
- Department of Psychiatry and Psychotherapy, Center of Psychosocial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Laura Bindila
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Beat Lutz
- Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany
| | - Johannes Fuss
- Human Behavior Laboratory, Institute for Sex Research, Sexual Medicine and Forensic Psychiatry, Center of Psychosocial Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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Wade NE, Gilbart E, Swartz AM, Lisdahl KM. Assessing Aerobic Fitness Level in Relation to Affective and Behavioral Functioning in Emerging Adult Cannabis Users. Int J Ment Health Addict 2021; 19:546-559. [PMID: 34149331 PMCID: PMC8209753 DOI: 10.1007/s11469-019-00091-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
BACKGROUND Cannabis use is common amongst emerging adults and increasingly linked to negative mood and neurocognitive performance. Aerobic fitness, however, may be positively linked. Therefore we assess the potential moderating influence of aerobic fitness on affective and behavioral functioning associated with cannabis. METHODS After 3-weeks of abstinence, 83 16-26 year-olds (38 cannabis, 45 controls) completed self-report inventories (BDI-II, STAI-state, FrSBe, BIS/BAS), an objective emotion functioning measure (PennCNP), and VO2 max testing. Multiple regressions assessed symptoms from past year cannabis use, VO2 max, and cannabis*VO2, controlling for alcohol, cotinine, gender, and BMI. RESULTS Past year cannabis use was associated with increased depressive symptoms (p=.04), BIS/BAS component (p=.002), and emotion recognition (p=.045). CONCLUSIONS Results suggest a robust association between past year cannabis use and depressive symptoms and behavioral and affective functioning. Aerobic fitness, however, did not moderate these relationships. Efforts should be made to inform the public of concerns regarding the potential negative impact of cannabis on mood.
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Affiliation(s)
- Natasha E. Wade
- Department of Psychiatry, University of California San Diego, San Diego, CA, USA
| | - Erika Gilbart
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Ann M. Swartz
- Department of Kinesiology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
| | - Krista M. Lisdahl
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI, USA
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Crombie KM, Cisler JM, Hillard CJ, Koltyn KF. Aerobic exercise reduces anxiety and fear ratings to threat and increases circulating endocannabinoids in women with and without PTSD. Ment Health Phys Act 2021; 20:100366. [PMID: 34149867 PMCID: PMC8208522 DOI: 10.1016/j.mhpa.2020.100366] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Reductions in state anxiety have been reported following an acute bout of aerobic exercise. However, less is known regarding anxiety and fear ratings to specific threatening stimuli following an acute bout of aerobic exercise in women with PTSD. Moreover, the mechanisms responsible for the anxiolytic effects of exercise are not fully understood, although recent studies suggest a role for the endocannabinoid (eCB) system. Thus, this study utilized a randomized, counterbalanced approach to examine anxiety and fear ratings to predictable or unpredictable electric shock administration and circulating concentrations of eCBs and mood states immediately following moderate-intensity aerobic exercise (30 min on treadmill at 70-75% maximum heart rate) and a quiet rest control condition in women with and without a history of trauma, and in women with PTSD (N=42). Results revealed that anxiety and fear ratings to unpredictable and predictable threats were significantly (p<.05) lower following exercise compared to quiet rest, with correlational analyses indicating those with greater increases in circulating eCBs had greater reductions in anxiety and fear ratings to unpredictable and predictable threats following exercise. Also, there were significant (p<.05) reductions in fatigue, confusion, total mood disturbance, and increases in positive affect following exercise for the entire sample. Non-trauma controls and PTSD groups reported significant (p<.05) increases in vigor, with additional mood improvements following exercise for the PTSD group (i.e., decreases in state anxiety, negative affect, tension, anger, and depression). Results from this study suggest that aerobic exercise exerts psychological benefits in women with PTSD, potentially due to exercise-induced increases in circulating concentrations of eCBs.
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Affiliation(s)
- Kevin M. Crombie
- Department of Kinesiology at the University of Wisconsin-Madison, Madison, WI – USA
- Department of Psychiatry at the University of Wisconsin – Madison, Madison, WI – USA
| | - Josh M. Cisler
- Department of Psychiatry at the University of Wisconsin – Madison, Madison, WI – USA
| | - Cecilia J. Hillard
- Neuroscience Research Center and Department of Pharmacology and Toxicology at the Medical College of Wisconsin, Milwaukee, WI – USA
| | - Kelli F. Koltyn
- Department of Kinesiology at the University of Wisconsin-Madison, Madison, WI – USA
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Kume D, Nishiwaki M, Hotta N, Endoh H. Acute mental stress-caused arterial stiffening can be counteracted by brief aerobic exercise. Eur J Appl Physiol 2021; 121:1359-1366. [PMID: 33604696 DOI: 10.1007/s00421-021-04618-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 02/05/2021] [Indexed: 01/25/2023]
Abstract
PURPOSE Acute mental stress (MS) causes an elevation in pulse wave velocity (PWV), an index of arterial stiffness. In contrast, aerobic exercise acutely decreases arterial stiffness, even in the short term. The present study aimed to examine whether acute MS-caused arterial stiffening can be counteracted by brief aerobic exercise. METHODS Thirteen young healthy men (mean age, 20 ± 1 years) participated in two randomized experimental visits where they were subjected to acute MS followed by seated rest (RE) or cycling exercise (EX) trials. Following a 5-min MS task, the participants in the RE trial rested on a chair for 10 min (from 10 to 20 min after the cessation of the task), whereas those in the EX trial cycled at 35% of heart rate reserve for the same duration. Heart-brachial PWV (hbPWV), brachial-ankle PWV (baPWV), heart-ankle PWV (haPWV), and the cardio-ankle vascular index (CAVI) were simultaneously measured at baseline and 5, 30, and 45 min after the task. RESULTS Both trials caused significant elevations (P < 0.05) in hbPWV, haPWV, and CAVI at 5 min after the task; subsequently, this persisted until 45 min after the task in the RE trial, whereas the elevations in the EX trial were eliminated. In the RE trial, baPWV significantly increased (P < 0.05) at 30 and 45 min after the task, whereas such an increase was not observed in the EX trial. CONCLUSION The findings of the present study reveal that brief aerobic exercise counteracts arterial stiffening caused by acute MS.
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Affiliation(s)
- Daisuke Kume
- Department of Health, Sports and Welfare, Okinawa University, 555 Kokuba, Naha, Okinawa, 902-8521, Japan.
| | - Masato Nishiwaki
- Faculty of Engineering, Osaka Institute of Technology, 5-16-1 Omiya, Asahi-ku, Osaka, 535-8585, Japan
| | - Norio Hotta
- Department of Lifelong Sports and Health Sciences, Chubu University, 1200 Matsumoto-cho, Kasugai, Aichi, 487-8501, Japan
| | - Hiroshi Endoh
- Department of Health and Physical Education, University of the Ryukyus, 1 Senbaru, Nishihara, Okinawa, 903-0213, Japan
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Endocannabinoids and aging-Inflammation, neuroplasticity, mood and pain. VITAMINS AND HORMONES 2021; 115:129-172. [PMID: 33706946 DOI: 10.1016/bs.vh.2020.12.007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Aging is associated with changes in hormones, slowing of metabolism, diminished physiological processes, chronic inflammation and high exposure to oxidative stress factors, generally described as the biological cost of living. Lifestyle interventions of diet and exercise can improve the quality of life during aging and lower diet-related chronic disease. The endocannabinoid system (ECS) has important effects on systemic metabolism and physiological systems, including the central and peripheral nervous systems. Exercise can reduce the loss of muscle mass and improve strength, and increase the levels of endocannabinoids (eCB) in brain and blood. Although the ECS exerts controls on multiple systems throughout life it affords benefits to natural aging. The eCB are synthesized from polyunsaturated fatty acids (PUFA) and the primary ones are produced from arachidonic acid (n-6 PUFA) and others from the n-3 PUFA, namely eicosapentaenoic and docosahexaenoic acids. The eCB ligands bind to their receptors, CB1 and CB2, with effects on appetite stimulation, metabolism, immune functions, and brain physiology and neuroplasticity. Dietary families of PUFA are a primary factor that can influence the types and levels of eCB and as a consequence, the downstream actions when the ligands bind to their receptors. Furthermore, the association of eCB with the synthesis of oxylipins (OxL) is a connection between the physiological actions of eCB and the lipid derived immunological OxL mediators of inflammation. OxL are ubiquitous and influence neuroinflammation and inflammatory processes. The emerging actions of eCB on neuroplasticity, well-being and pain are important to aging. Herein, we present information about the ECS and its components, how exercise and diet affects specific eCB, their role in neuroplasticity, neuroinflammation, pain, mood, and relationship to OxL. Poor nutrition status and low nutrient intakes observed with many elderly are reasons to examine the role of dietary PUFA actions on the ECS to improve health.
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Mannekote Thippaiah S, Iyengar SS, Vinod KY. Exo- and Endo-cannabinoids in Depressive and Suicidal Behaviors. Front Psychiatry 2021; 12:636228. [PMID: 33967855 PMCID: PMC8102729 DOI: 10.3389/fpsyt.2021.636228] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 03/19/2021] [Indexed: 12/20/2022] Open
Abstract
Cannabis (marijuana) has been known to humans for thousands of years but its neurophysiological effects were sparsely understood until recently. Preclinical and clinical studies in the past two decades have indisputably supported the clinical proposition that the endocannabinoid system plays an important role in the etiopathogeneses of many neuropsychiatric disorders, including mood and addictive disorders. In this review, we discuss the existing knowledge of exo- and endo-cannabinoids, and role of the endocannabinoid system in depressive and suicidal behavior. A dysfunction in this system, located in brain regions such as prefrontal cortex and limbic structures is implicated in mood regulation, impulsivity and decision-making, may increase the risk of negative mood and cognition as well as suicidality. The literature discussed here also suggests that the endocannabinoid system may be a viable target for treatments of these neuropsychiatric conditions.
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Affiliation(s)
- Srinagesh Mannekote Thippaiah
- Valleywise Behavioral Health, Phoenix, AZ, United States.,Creighton University School of Medicine, Phoenix, AZ, United States
| | - Sloka S Iyengar
- The American Museum of Natural History, New York, NY, United States
| | - K Yaragudri Vinod
- Department of Analytical Psychopharmacology, The Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, United States.,Emotional Brain Institute, Nathan Kline Institute for Psychiatric Research, Orangeburg, NY, United States.,Department of Child & Adolescent Psychiatry, New York University Langone Health, New York, NY, United States
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Kang M, Bohorquez-Montoya L, McAuliffe T, Claesges SA, Blair NO, Sauber G, Reynolds CF, Hillard CJ, Goveas JS. Loneliness, Circulating Endocannabinoid Concentrations, and Grief Trajectories in Bereaved Older Adults: A Longitudinal Study. Front Psychiatry 2021; 12:783187. [PMID: 34955928 PMCID: PMC8692767 DOI: 10.3389/fpsyt.2021.783187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 11/16/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Loneliness is one of the most distressing grief symptoms and is associated with adverse mental health in bereaved older adults. The endocannabinoid signaling (ECS) system is stress-responsive and circulating endocannabinoid (eCB) concentrations are elevated following bereavement. This study examined the association between loneliness and circulating eCB concentrations in grieving older adults and explored the role of eCBs on the association between baseline loneliness and grief symptom trajectories. Methods: A total of 64 adults [grief with high loneliness: n = 18; grief with low loneliness: n = 26; and healthy comparison (HC): n = 20] completed baseline clinical assessments for the UCLA loneliness scale. In grief participants, longitudinal clinical assessments, including the Inventory of Complicated Grief and 17-item Hamilton Depression Rating scales, were collected over 6 months. Baseline circulating eCB [N-arachidonoylethanolamine (AEA) and 2-arachidonoylglycerol (2-AG)] concentrations were quantified in the serum using isotope dilution, liquid chromatography-mass spectrometry; cortisol concentrations were measured in the same samples using radioimmunoassay. Results: Circulating AEA concentrations were higher in severely lonely grieving elders than in HC group; cortisol concentrations were not different among the groups. Cross-sectionally, loneliness scores were positively associated with AEA concentrations in grievers; this finding was not significant after accounting for depressive symptom severity. Grieving individuals who endorsed high loneliness and had higher 2-AG concentrations at baseline showed faster grief symptom resolution. Conclusions: These novel findings suggest that in lonely, bereaved elders, increased circulating eCBs, a reflection of an efficient ECS system, are associated with better adaptation to bereavement. Circulating eCBs as potential moderators and mediators of the loneliness-grief trajectory associations should be investigated.
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Affiliation(s)
- Minhi Kang
- Department of Psychiatry and Behavioral Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Luisa Bohorquez-Montoya
- Department of Psychiatry and Behavioral Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Timothy McAuliffe
- Department of Psychiatry and Behavioral Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Stacy A Claesges
- Department of Psychiatry and Behavioral Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Nutta-On Blair
- Department of Psychiatry and Behavioral Medicine, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Garrett Sauber
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, United States.,Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Charles F Reynolds
- Department of Psychiatry, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Cecilia J Hillard
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, United States.,Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI, United States
| | - Joseph S Goveas
- Department of Psychiatry and Behavioral Medicine, Medical College of Wisconsin, Milwaukee, WI, United States.,Institute for Health and Equity, Medical College of Wisconsin, Milwaukee, WI, United States
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Monnerat G, Sánchez CAR, Santos CGM, Paulucio D, Velasque R, Evaristo GPC, Evaristo JAM, Nogueira FCS, Domont GB, Serrato M, Lima AS, Bishop D, Campos de Carvalho AC, Pompeu FAMS. Different Signatures of High Cardiorespiratory Capacity Revealed With Metabolomic Profiling in Elite Athletes. Int J Sports Physiol Perform 2020; 15:1156-1167. [PMID: 32335533 DOI: 10.1123/ijspp.2019-0267] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2019] [Revised: 10/11/2019] [Accepted: 12/03/2019] [Indexed: 02/08/2023]
Abstract
PURPOSE High cardiorespiratory capacity is a key determinant of human performance and life expectancy; however, the underlying mechanisms are not fully understood. The objective of this pilot study was to investigate biochemical signatures of endurance-performance athletes using high-resolution nontargeted metabolomics. METHODS Elite long-distance runners with similar training and anthropometrical records were studied. After athletes' maximal oxygen consumption (V˙O2max) was measured, they were divided into 2 groups: low V˙O2max (<65 mL·kg-1·min-1, n = 7) and high V˙O2max (>75 mL·kg-1·min-1, n = 7). Plasma was collected under basal conditions after 12 hours of fasting and after a maximal exercise test (nonfasted) and analyzed by high-resolution LC-MS. Multivariate and univariate statistics were applied. RESULTS A total of 167 compounds were putatively identified with an LC-MS-based metabolomics pipeline. Partial least-squares discriminant analysis showed a clear separation between groups. Significant variations in metabolites highlighted group differences in diverse metabolic pathways, including lipids, vitamins, amino acids, purine, histidine, xenobiotics, and others, either under basal condition or after the maximal exercise test. CONCLUSIONS Taken together, the metabolic alterations revealed in the study affect cellular energy use and availability, oxidative stress management, muscle damage, central nervous system signaling metabolites, nutrients, and compound bioavailability, providing new insights into metabolic alterations associated with exercise and cardiorespiratory fitness levels in trained athletes.
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Chen H, Chen L, Hao G. Exercise attenuates the association between household pesticide exposure and depressive symptoms: Evidence from NHANES, 2005-2014. ENVIRONMENTAL RESEARCH 2020; 188:109760. [PMID: 32534257 DOI: 10.1016/j.envres.2020.109760] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/27/2020] [Accepted: 05/28/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The effect of household pesticide exposure on depressive symptoms in the general population is underexplored, and the role of exercise in the association between pesticide exposure and depressive symptoms is unclear. OBJECTIVE The goals of this study are to examine whether the associations between household pesticide exposure and depressive symptoms exist in the general population, and whether exercise can attenuate these associations. METHODS We used data from the 2005-2014 National Health and Nutrition Examination Surveys (NHANES), including a total of 14708 US adult participants who were 20 years or older. Depressive symptoms were assessed using the Patient Health Questionnaire (PHQ-9). Exercise information on the recreational physical activity (RPA) and pesticide exposure were self-reported in an interview. RESULTS Participants with exposure of household pesticide had a higher odds ratio ([OR]; OR = 1.32, 95% confidence intervals [CI]: 1.12-1.56) for depressive symptoms, compared to those who had not been unexposed. A significant interaction between exercise and pesticide exposure on depressive symptoms was observed (P = 0.038). Stratified analysis showed that household pesticide exposure was associated with a 50% higher risk of depressive symptoms (OR = 1.50, 95% CI: 1.20-1.86) in the population with light RPA. However, we did not find a significant association in the group with moderate + vigorous RPA (P = 0.305). CONCLUSION This study further confirms that household pesticide exposure is associated with an elevated risk of depressive symptoms in the general population. More importantly, we for the first time reports that moderate + vigorous RPA attenuates the positive association between household pesticide exposure and depressive symptoms.
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Affiliation(s)
- Haiyan Chen
- Guangzhou Center for Disease Control and Prevention, China
| | - Li Chen
- Georgia Prevention Institute, Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA
| | - Guang Hao
- Department of Epidemiology, School of Medicine, Jinan University, China.
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