1
|
Qasim Ali L, Alshammary RAA, Ghazi Alshammary A, Jouda J. A hormonal side effect of anabolic steroids among a sample of Baghdad male bodybuilders. Steroids 2024; 209:109465. [PMID: 38945388 DOI: 10.1016/j.steroids.2024.109465] [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: 02/02/2024] [Revised: 06/27/2024] [Accepted: 06/27/2024] [Indexed: 07/02/2024]
Abstract
Anabolic-androgenic steroids (AAS) are used widely, but in illegal ways mostly by young men as performance-enhancing and image-enhancing drugs (IPED). long-term usage of AAS, usually in conjunction with other illegal substances, can have extremely detrimental impacts on the reproductive system. The primary goal of this study was to examine any possible detrimental effects of AAS on sex hormone levels, a liver and kidney function in individuals who frequent fitness centers in Iraq-Baghdad. In this research, there are 60 participants (20-37 years old); 30 athletes who visited the different gyms in Baghdad/ Iraq and used AAS such as testosterone, Boldenone, Cybontae, Deca Durabellin; and 30 athletes who did not take any synthetics hormones and serve as control. All participants answered the questionnaire form which included their age, the type of used AAS, when they started to take it, and the total usage number per week. The blood (5 ml) was drawn from every participant to separate the serum. The serum was used to measure some hormones (Testosterone, FSH, LH, prolactin and Estrodiol) and liver and kidney function parameters. The results showed a significantly lower level of testosterone and FSH in the AAS-users' bodybuilding group compared to the control group. In comparison with the control group, there was a notable rise in the PRL level in the serum of AA users. However, when comparing the serum levels of LH and Estrodiol in the AAS-user group to those in the control group, no discernible variations were seen. AAS users had a significantly higher level of ALT and lower ALP than controls, although there is no difference in AST levels between the two groups. The creatine level was significantly higher in the AAS-user compared to the control group, but not urea. In conclusion, the effects of AAS and other supplements on sex hormones and kidney, liver function, and vary depending on how long they are used, with the effects of AAS being more pronounced. Therefore, there is a need for culturally sensitive measures to prevent steroid abuse among youth.
Collapse
Affiliation(s)
- Luma Qasim Ali
- Department of Biology, College of Science, Mustansiriyah University, Bagdad, Iraq.
| | - Rusul A A Alshammary
- Department of Microbiology, College of Science, Al-Mustansiriya University, Baghdad, Iraq.
| | - Assal Ghazi Alshammary
- Department of Microbiology, College of Science, Al-Mustansiriya University, Baghdad, Iraq.
| | - Jamela Jouda
- Department of Biology, College of Science, Mustansiriyah University, Bagdad, Iraq.
| |
Collapse
|
2
|
Tanaka M, Kanazashi M, Kondo H, Fujino H. Methylglyoxal reduces resistance exercise-induced protein synthesis and anabolic signaling in rat tibialis anterior muscle. J Muscle Res Cell Motil 2024:10.1007/s10974-024-09680-w. [PMID: 39085712 DOI: 10.1007/s10974-024-09680-w] [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: 04/28/2024] [Accepted: 07/15/2024] [Indexed: 08/02/2024]
Abstract
Resistance exercise provides significant benefits to skeletal muscle, including hypertrophy and metabolic enhancements, supporting overall health and disease management. However, skeletal muscle responsiveness to resistance exercise is significantly reduced in conditions such as aging and diabetes. Recent reports suggest that glycation stress contributes to muscle atrophy and impaired exercise-induced muscle adaptation; however, its role in the muscle response to resistance exercise remains unclear. Therefore, in this study, we investigated whether methylglyoxal (MGO), a key factor in glycation stress, affects the acute responsiveness of skeletal muscles to resistance exercise, focusing on protein synthesis and the key signaling molecules. This study included 12 8-week-old male Sprague-Dawley rats divided into two groups: one received 0.5% MGO-supplemented drinking water (MGO group) and the other received regular water (control group). After 10 weeks, the left tibialis anterior muscle of each rat was subjected to electrical stimulation (ES) to mimic resistance exercise, with the right muscle serving as a non-stimulated control. Muscle protein-synthesis rates were evaluated with SUnSET, and phosphorylation levels of key signaling molecules (p70S6K and S6rp) were quantified using western blotting. In the control group, stimulated muscles exhibited significantly increased muscle protein synthesis and phosphorylation levels of p70S6K and S6rp. In the MGO group, these increases were attenuated, indicating that MGO treatment suppresses the adaptive response to resistance exercise. MGO diminishes the skeletal muscle's adaptive response to ES-simulated resistance exercise, affecting both muscle protein synthesis and key signaling molecules. The potential influence of glycation stress on the effectiveness of resistance exercise or ES emphasizes the need for individualized interventions in conditions of elevated glycation stress, such as diabetes and aging.
Collapse
Affiliation(s)
- Masayuki Tanaka
- Department of Physical Therapy, Faculty of Health Sciences, Okayama Healthcare Professional University, 3-2-18 Daiku, Kita-ku, Okayama-shi, Okayama, 700-0913, Japan
- Department of Physical Therapy, Faculty of Human Sciences, Osaka University of Human Sciences, 1-4-1 Shojaku, Settsu-shi, Osaka, 566-8501, Japan
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan
| | - Miho Kanazashi
- Department of Health and Welfare, Faculty of Health and Welfare, Prefectural University of Hiroshima, 1-1 Gakuen- cho, Mihara-shi, Hiroshima, 723-0053, Japan.
| | - Hiroyo Kondo
- Department of Nutrition, Faculty of Health and Nutrition, Shubun University, 6 Nikko-cho, Ichinomiya, Aichi, 491- 0938, Japan
| | - Hidemi Fujino
- Department of Rehabilitation Science, Kobe University Graduate School of Health Sciences, 7-10-2 Tomogaoka, Suma-ku, Kobe-shi, Hyogo, 654-0142, Japan
| |
Collapse
|
3
|
Sim J, Lim J, Lee H, Park S, Shin D. A 3 month nutrition and exercise program improved hallux strength among senior daycare center users in Korea: a cluster randomized controlled trial. Front Public Health 2024; 12:1364908. [PMID: 39104890 PMCID: PMC11299432 DOI: 10.3389/fpubh.2024.1364908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 07/08/2024] [Indexed: 08/07/2024] Open
Abstract
Introduction With a growing aging population, the focus on the health and well-being of older adults, especially in preventing falls, becomes crucial. This 3 month study, initiated in July 2022, aimed to assess the impact of a nutrition and exercise program in senior daycare centers in Chuncheon, South Korea. Methods A 3 month study, beginning in July 2022, included 204 older adults from 10 senior daycare centers in Chuncheon, South Korea. Randomly assigned to intervention or control groups, the intervention involved nutrition, daily toe exercises, or both. Control centers received interventions post-measurements. Pre- and post-intervention analyses used paired t-tests and multiple linear regression, assessing metrics like toe grip strength for significance. While 204 were initially enrolled, the analysis included 151 participants due to dropouts. Results Participants, with a mean age of 83.3 years (43.1% aged ≥ 85 years), exhibited mild to moderate cognitive impairment and multiple chronic illnesses. Health data indicated that 37.3% were obese, and the average BMI was 24.0 kg/m2. Both the intervention and control groups showed significant improvements in toe grip strength post-intervention. Specifically, the exercise-only and combined exercise-nutrition groups demonstrated significant differences in hallux strength compared to the control group after adjusting for age and gender. Conclusion The study showed that a basic nutrition and exercise program increased toe strength in older adults with chronic diseases, including mild cognitive impairments. This intervention holds potential to prevent muscle strength decline and reduce fall risks in older individuals. As the first of its kind in Korean senior daycare centers, it emphasizes the need for future research and standardized programs for senior daycare users.
Collapse
Affiliation(s)
- Jiwon Sim
- Department of Food Science and Nutrition, Hallym University, Chuncheon, Republic of Korea
- The Korean Institute of Nutrition, Hallym University, Chuncheon, Republic of Korea
| | - Jongguk Lim
- Department of General Physical Education, Ilsong Liberal Arts School, Hallym University, Chuncheon, Republic of Korea
| | - Hayoung Lee
- School of Nursing, Hallym University, Chuncheon, Republic of Korea
- Areumdeurinamu Children Hospital, Sejong, Republic of Korea
| | - Sohyun Park
- Department of Food Science and Nutrition, Hallym University, Chuncheon, Republic of Korea
- The Korean Institute of Nutrition, Hallym University, Chuncheon, Republic of Korea
| | - Dongsoo Shin
- School of Nursing, Hallym University, Chuncheon, Republic of Korea
| |
Collapse
|
4
|
Bobowik P, Gajewski J, Wiszomirska I, Maciejewska-Skrendo A, Leźnicka K, Kaczmarczyk K. The Impact of Resistance Training on Equilibrium Abilities and Quality of Life in Older Adults after SARS-CoV-2 Survival. J Clin Med 2024; 13:2747. [PMID: 38792288 PMCID: PMC11121851 DOI: 10.3390/jcm13102747] [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: 04/11/2024] [Revised: 04/26/2024] [Accepted: 05/06/2024] [Indexed: 05/26/2024] Open
Abstract
Background: The scientific literature on COVID-19 and its long-term impacts on all-body systems and their treatments is still limited. The aim of the study was to create a safe protocol-based intervention to improve functional and equilibrium abilities in older adults impacted by COVID-19. Methods: This study used a sample of 46 people (intervention group: n = 26; control group: n = 20). Resistance training (RT) was held twice a week, with 60 min per session for 8 weeks. The postural stability and quality of life questionnaire (WHQOOL) was completed during pre- and post-testing. Results: The results indicated significant differences in overall stability index (OSI) with eyes open (EO), anterior-posterior stability index (APSI) EO, fall-risk index 6-2 (FRI6-2) values in males (p < 0.05), and APSI EO (p < 0.05) values in females compared to control groups, respectively. In the training, a significant improvement was reported in OSI EO and APSI EO (p < 0.05) female groups compared to baseline results and in FRI6-2 values in both gender groups (p < 0.01-men, p < 0.05-women). The effect of the intervention was recorded in the intervention group in the OSI EO (Z = -3.12, p < 0.01, R = 0.533) and FRI6-2 (Z = -2.06, p < 0.05, R = 0.354). Additionally, significantly different reactions between the groups were observed in the psychological domain (DOM2) (Z = 2.194, p < 0.028, R = 0.389), social relationship domain (DOM3) (Z = 2.051, p < 0.0403, R = 0.361), and in question 2 concerning general health (Z = 3.309, p < 0.0009, R = 0.535). Conclusions: The findings indicate that RT had a positive effect on older adults affected by COVID-19, led to a significant improvement in their postural stability, and had a significant impact on elements of psychological well-being and quality of life.
Collapse
Affiliation(s)
- Patrycja Bobowik
- Faculty of Rehabilitation, Józef Piłsudski University of Physical Education in Warsaw, Marymoncka 34, 00-968 Warsaw, Poland; (I.W.); (K.K.)
| | - Jan Gajewski
- Faculty of Physical Education, Józef Piłsudski University of Physical Education in Warsaw, Marymoncka 34, 00-968 Warsaw, Poland;
| | - Ida Wiszomirska
- Faculty of Rehabilitation, Józef Piłsudski University of Physical Education in Warsaw, Marymoncka 34, 00-968 Warsaw, Poland; (I.W.); (K.K.)
| | - Agnieszka Maciejewska-Skrendo
- Faculty of Physical Culture, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland; (A.M.-S.); (K.L.)
- Institute of Physical Culture Sciences, University of Szczecin, 70-453 Szczecin, Poland
| | - Katarzyna Leźnicka
- Faculty of Physical Culture, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland; (A.M.-S.); (K.L.)
- Institute of Physical Culture Sciences, University of Szczecin, 70-453 Szczecin, Poland
| | - Katarzyna Kaczmarczyk
- Faculty of Rehabilitation, Józef Piłsudski University of Physical Education in Warsaw, Marymoncka 34, 00-968 Warsaw, Poland; (I.W.); (K.K.)
| |
Collapse
|
5
|
Lissek T. Aging, adaptation and maladaptation. FRONTIERS IN AGING 2023; 4:1256844. [PMID: 37701757 PMCID: PMC10493302 DOI: 10.3389/fragi.2023.1256844] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 08/14/2023] [Indexed: 09/14/2023]
Abstract
Aging is accompanied by a dysregulation of adaptive processes. On the one hand, physiological adaptation mechanisms such as learning and memory, immune system plasticity and exercise-dependent muscle remodeling are blunted. On the other hand, several maladaptive processes increase with age including cancer, pathological cardiovascular remodeling and metabolic dysregulation. With increasing age the quotient of beneficial adaptation (Ab) to harmful adaptation (Ah), Ab/Ah, decreases. The adaptation-maladaptation framework of aging entails that there are age-related pathological phenotypes that are the result of activation of physiological adaptation mechanisms (e.g., maladaptation as a result of misdirection of adaptive cascades and molecular damage incurred by adaptation processes) and their occurrence over time might, to some degree, be inevitable. Aging might hence result from the organism's inability to solve the adaptation-maladaptation dilemma. The present work explores the concept of counteracting aging through adaptation and proposes that interventions such as exercise, environmental enrichment and dietary restriction work in counteracting aging because they increase the ratio Ab/Ah by both raising Ab (e.g., by inducing metaplasticity in cells, meaning they raise the adaptability of cells to future stimuli) and decreasing Ah (e.g., through desensitizing certain potentially harmful adaptive mechanisms). Molecules whose aging-related expression changes can explain aspects of dysfunctional adaptation such as CREB and certain immediate early genes are examined and it is delineated how a better understanding of the dynamical organization of adaptation cascades could elucidate the seemingly complex role of adaptation in driving aging as well as protecting against it.
Collapse
Affiliation(s)
- Thomas Lissek
- Interdisciplinary Center for Neurosciences, Heidelberg University, Heidelberg, Germany
| |
Collapse
|
6
|
Jenkins AR, Gaynor-Sodeifi K, Lewthwaite H, Triandafilou J, Belo LF, de Oliveira MF, Jensen D. Efficacy of interventions to alter measures of fat-free mass in people with COPD: a systematic review and meta-analysis. ERJ Open Res 2023; 9:00102-2023. [PMID: 37529637 PMCID: PMC10388177 DOI: 10.1183/23120541.00102-2023] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 04/08/2023] [Indexed: 08/03/2023] Open
Abstract
Introduction Low fat-free mass (FFM) is linked to poor health outcomes in COPD, including impaired exercise tolerance and premature death. The aim of this systematic review was to synthesise evidence on the effectiveness of interventions for increasing FFM in COPD. Methods Searches of electronic databases (MEDLINE, Cochrane Library, Embase, Web of Science, Scopus) and trial registers (ClinicalTrials.gov) were undertaken from inception to August 2022 for randomised studies of interventions assessing measures of FFM in COPD. The primary outcome was change in FFM (including derivatives). Secondary outcomes were adverse events, compliance and attrition. Results 99 studies (n=5138 people with COPD) of 11 intervention components, used alone or in combination, were included. Exercise training increased mid-thigh cross-sectional area (k=3, standardised mean difference (SMD) 1.04, 95% CI 0.02-2.06; p=0.04), but not FFM (k=4, SMD 0.03, 95% CI -0.18-0.24; p=0.75). Nutritional supplementation significantly increased FFM index (k=11, SMD 0.31, 95% CI 0.13-0.50; p<0.001), but not FFM (k=19, SMD 0.16, 95% CI -0.06-0.39; p=0.16). Combined exercise training and nutritional supplementation increased measures related to FFM in 67% of studies. Anabolic steroids increased FFM (k=4, SMD 0.98, 95% CI 0.24-1.72; p=0.009). Neuromuscular electrical stimulation increased measures related to FFM in 50% of studies. No interventions were more at risk of serious adverse events, low compliance or attrition. Discussion Exercise training and nutritional supplementation were not effective in isolation to increase FFM, but were for localised muscle and index measures, respectively. Combined, exercise and nutritional supplementation shows promise as a strategy to increase FFM in COPD. Anabolic steroids are efficacious for increasing FFM in COPD.
Collapse
Affiliation(s)
- Alex R. Jenkins
- Clinical Exercise and Respiratory Physiology Laboratory, Department of Kinesiology and Physical Education, Faculty of Education, McGill University, Montréal, QC, Canada
| | - Kaveh Gaynor-Sodeifi
- Clinical Exercise and Respiratory Physiology Laboratory, Department of Kinesiology and Physical Education, Faculty of Education, McGill University, Montréal, QC, Canada
| | - Hayley Lewthwaite
- Clinical Exercise and Respiratory Physiology Laboratory, Department of Kinesiology and Physical Education, Faculty of Education, McGill University, Montréal, QC, Canada
- Centre of Research Excellence in Treatable Traits, College of Health, Medicine, and Wellbeing, University of Newcastle, Newcastle, NSW, Australia
- Asthma and Breathing Research Program, Hunter Medical Research Institute, Newcastle, NSW, Australia
| | - Jaycie Triandafilou
- Clinical Exercise and Respiratory Physiology Laboratory, Department of Kinesiology and Physical Education, Faculty of Education, McGill University, Montréal, QC, Canada
| | - Letícia F. Belo
- Clinical Exercise and Respiratory Physiology Laboratory, Department of Kinesiology and Physical Education, Faculty of Education, McGill University, Montréal, QC, Canada
- Laboratory of Research in Respiratory Physiotherapy, Physiotherapy Department, State University of Londrina, Londrina, Brazil
| | - Mayron Faria de Oliveira
- Clinical Exercise and Respiratory Physiology Laboratory, Department of Kinesiology and Physical Education, Faculty of Education, McGill University, Montréal, QC, Canada
- Science Division, Exercise Science, Lyon College, Batesville, AR, USA
| | - Dennis Jensen
- Clinical Exercise and Respiratory Physiology Laboratory, Department of Kinesiology and Physical Education, Faculty of Education, McGill University, Montréal, QC, Canada
- Translational Research in Respiratory Diseases Program, Research Institute of the McGill University Health Centre, Montréal, QC, Canada
| |
Collapse
|
7
|
Endo Y, Samandari M, Karvar M, Mostafavi A, Quint J, Rinoldi C, Yazdi IK, Swieszkowski W, Mauney J, Agarwal S, Tamayol A, Sinha I. Aerobic exercise and scaffolds with hierarchical porosity synergistically promote functional recovery post volumetric muscle loss. Biomaterials 2023; 296:122058. [PMID: 36841214 PMCID: PMC10085854 DOI: 10.1016/j.biomaterials.2023.122058] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Revised: 01/10/2023] [Accepted: 02/14/2023] [Indexed: 02/19/2023]
Abstract
Volumetric muscle loss (VML), which refers to a composite skeletal muscle defect, most commonly heals by scarring and minimal muscle regeneration but substantial fibrosis. Current surgical interventions and physical therapy techniques are limited in restoring muscle function following VML. Novel tissue engineering strategies may offer an option to promote functional muscle recovery. The present study evaluates a colloidal scaffold with hierarchical porosity and controlled mechanical properties for the treatment of VML. In addition, as VML results in an acute decrease in insulin-like growth factor 1 (IGF-1), a myogenic factor, the scaffold was designed to slowly release IGF-1 following implantation. The foam-like scaffold is directly crosslinked onto remnant muscle without the need for suturing. In situ 3D printing of IGF-1-releasing porous muscle scaffold onto VML injuries resulted in robust tissue ingrowth, improved muscle repair, and increased muscle strength in a murine VML model. Histological analysis confirmed regeneration of new muscle in the engineered scaffolds. In addition, the scaffolds significantly reduced fibrosis and increased the expression of neuromuscular junctions in the newly regenerated tissue. Exercise training, when combined with the engineered scaffolds, augmented the treatment outcome in a synergistic fashion. These data suggest highly porous scaffolds and exercise therapy, in combination, may be a treatment option following VML.
Collapse
Affiliation(s)
- Yori Endo
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Mohamadmahdi Samandari
- Department of Biomedical Engineering, University of Connecticut, Farmington, CT, 06269, USA
| | - Mehran Karvar
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Azadeh Mostafavi
- Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA
| | - Jacob Quint
- Department of Biomedical Engineering, University of Connecticut, Farmington, CT, 06269, USA
| | - Chiara Rinoldi
- Materials Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, 02-507, Poland
| | - Iman K Yazdi
- Division of Engineering in Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Wojciech Swieszkowski
- Materials Design Division, Faculty of Materials Science and Engineering, Warsaw University of Technology, Warsaw, 02-507, Poland
| | - Joshua Mauney
- Department of Urology and Biomedical Engineering, University of California, Irvine, Irvine, CA, 92868, USA
| | - Shailesh Agarwal
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Ali Tamayol
- Department of Biomedical Engineering, University of Connecticut, Farmington, CT, 06269, USA; Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, NE, 68588, USA.
| | - Indranil Sinha
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, 02115, USA.
| |
Collapse
|
8
|
Vlachogiannis NI, Ntouros PA, Pappa M, Kravvariti E, Kostaki EG, Fragoulis GE, Papanikolaou C, Mavroeidi D, Bournia VK, Panopoulos S, Laskari K, Arida A, Gorgoulis VG, Tektonidou MG, Paraskevis D, Sfikakis PP, Souliotis VL. Chronological Age and DNA Damage Accumulation in Blood Mononuclear Cells: A Linear Association in Healthy Humans after 50 Years of Age. Int J Mol Sci 2023; 24:ijms24087148. [PMID: 37108309 PMCID: PMC10138488 DOI: 10.3390/ijms24087148] [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: 02/14/2023] [Revised: 03/19/2023] [Accepted: 04/07/2023] [Indexed: 04/29/2023] Open
Abstract
Aging is characterized by the progressive deregulation of homeostatic mechanisms causing the accumulation of macromolecular damage, including DNA damage, progressive decline in organ function and chronic diseases. Since several features of the aging phenotype are closely related to defects in the DNA damage response (DDR) network, we have herein investigated the relationship between chronological age and DDR signals in peripheral blood mononuclear cells (PBMCs) from healthy individuals. DDR-associated parameters, including endogenous DNA damage (single-strand breaks and double-strand breaks (DSBs) measured by the alkaline comet assay (Olive Tail Moment (OTM); DSBs-only by γH2AX immunofluorescence staining), DSBs repair capacity, oxidative stress, and apurinic/apyrimidinic sites were evaluated in PBMCs of 243 individuals aged 18-75 years, free of any major comorbidity. While OTM values showed marginal correlation with age until 50 years (rs = 0.41, p = 0.11), a linear relationship was observed after 50 years (r = 0.95, p < 0.001). Moreover, individuals older than 50 years showed increased endogenous DSBs levels (γH2Ax), higher oxidative stress, augmented apurinic/apyrimidinic sites and decreased DSBs repair capacity than those with age lower than 50 years (all p < 0.001). Results were reproduced when we examined men and women separately. Prospective studies confirming the value of DNA damage accumulation as a biomarker of aging, as well as the presence of a relevant agethreshold, are warranted.
Collapse
Affiliation(s)
- Nikolaos I Vlachogiannis
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Panagiotis A Ntouros
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Maria Pappa
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Evrydiki Kravvariti
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
- Postgraduate Medical Studies in Geriatric Syndromes and Physiology of Aging, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Evangelia Georgia Kostaki
- Department of Hygiene, Epidemiology and Medical Statistics, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Georgios E Fragoulis
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Christina Papanikolaou
- Institute of Chemical Biology, National Hellenic Research Foundation, 116 35 Athens, Greece
| | - Dimitra Mavroeidi
- Institute of Chemical Biology, National Hellenic Research Foundation, 116 35 Athens, Greece
| | - Vasiliki-Kalliopi Bournia
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Stylianos Panopoulos
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Katerina Laskari
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Aikaterini Arida
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Vassilis G Gorgoulis
- Molecular Carcinogenesis Group, Department of Histology and Embryology, National Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Maria G Tektonidou
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Dimitrios Paraskevis
- Department of Hygiene, Epidemiology and Medical Statistics, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Petros P Sfikakis
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
- Postgraduate Medical Studies in Geriatric Syndromes and Physiology of Aging, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
| | - Vassilis L Souliotis
- First Department of Propaedeutic Internal Medicine and Joint Rheumatology Program, National and Kapodistrian University of Athens Medical School, 115 27 Athens, Greece
- Institute of Chemical Biology, National Hellenic Research Foundation, 116 35 Athens, Greece
| |
Collapse
|
9
|
Aragon AA, Tipton KD, Schoenfeld BJ. Age-related muscle anabolic resistance: inevitable or preventable? Nutr Rev 2023; 81:441-454. [PMID: 36018750 DOI: 10.1093/nutrit/nuac062] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Age-related loss of muscle mass, strength, and performance, commonly referred to as sarcopenia, has wide-ranging detrimental effects on human health, the ramifications of which can have serious implications for both morbidity and mortality. Various interventional strategies have been proposed to counteract sarcopenia, with a particular emphasis on those employing a combination of exercise and nutrition. However, the efficacy of these interventions can be confounded by an age-related blunting of the muscle protein synthesis response to a given dose of protein/amino acids, which has been termed "anabolic resistance." While the pathophysiology of sarcopenia is undoubtedly complex, anabolic resistance is implicated in the progression of age-related muscle loss and its underlying complications. Several mechanisms have been proposed as underlying age-related impairments in the anabolic response to protein consumption. These include decreased anabolic molecular signaling activity, reduced insulin-mediated capillary recruitment (thus, reduced amino acid delivery), and increased splanchnic retention of amino acids (thus, reduced availability for muscular uptake). Obesity and sedentarism can exacerbate, or at least facilitate, anabolic resistance, mediated in part by insulin resistance and systemic inflammation. This narrative review addresses the key factors and contextual elements involved in reduction of the acute muscle protein synthesis response associated with aging and its varied consequences. Practical interventions focused on dietary protein manipulation are proposed to prevent the onset of anabolic resistance and mitigate its progression.
Collapse
Affiliation(s)
- Alan A Aragon
- is with the Department of Family and Consumer Sciences, California State University, Northridge, California, USA
| | - Kevin D Tipton
- is with the Institute of Performance Nutrition, Edinburgh, Scotland
| | - Brad J Schoenfeld
- is with the Department of Health Sciences, CUNY Lehman College, Bronx, New York, USA
| |
Collapse
|
10
|
Abstract
PURPOSE OF REVIEW This review aims to detail the current global research state of metabolically healthy obesogenesis with regard to metabolic factors, disease prevalence, comparisons to unhealthy obesity, and targeted interventions to reverse or delay progression from metabolically healthy to unhealthy obesity. RECENT FINDINGS As a long-term condition with increased risk of cardiovascular, metabolic, and all-cause mortality risks, obesity threatens public health on a national level. The recent discovery of metabolically healthy obesity (MHO), a transitional condition during which obese persons carry comparatively lower health risks, has added to confusion about the true effect of visceral fat and subsequent long-term health risks. In this context, the evaluation of fat loss interventions, such as bariatric surgery, lifestyle changes (diet/exercise), and hormonal therapies require re-evaluation in light of evidence that progression to high-risk stages of obesity relies on metabolic status and that strategies to protect the metabolism may be useful in the prevention of metabolically unhealthy obesity. Typical calorie-based exercise and diet interventions have failed to reduce the prevalence of unhealthy obesity. Holistic lifestyle, psychological, hormonal, and pharmacological interventions for MHO, on the other hand, may at least prevent progression to metabolically unhealthy obesity.
Collapse
Affiliation(s)
- Bryan J Mathis
- International Medical Center, University of Tsukuba Hospital, Tsukuba, Ibaraki, 305-8576, Japan.
| | - Kiyoji Tanaka
- Faculty of Health and Sport Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan
| | - Yuji Hiramatsu
- International Medical Center, University of Tsukuba Hospital, Tsukuba, Ibaraki, 305-8576, Japan
| |
Collapse
|
11
|
Zelko A, Rosenberger J, Kolarcik P, Madarasova Geckova A, van Dijk JP, Reijneveld SA. Age and sex differences in the effectiveness of intradialytic resistance training on muscle function. Sci Rep 2023; 13:3491. [PMID: 36859437 PMCID: PMC9977769 DOI: 10.1038/s41598-023-30621-z] [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] [Received: 11/02/2022] [Accepted: 02/27/2023] [Indexed: 03/03/2023] Open
Abstract
Previous research shows the beneficial effects of an intradialytic resistance training (IRT) on muscle function in haemodialysis patients. However, patients vary highly in their functional responses to IRT, may be due to effects of age and sex heterogeneities in adaptation. Therefore, the aim of this study was to investigate the degree to which the effects of IRT on the muscle function of haemodialysis patients vary by age and sex. We included 57 patients who completed a 12-week IRT (EXG) and 33 patients who received no IRT (CNG) during haemodialysis. Muscle function (MF) was assessed using dynamometry before and after a 12-week intervention and after a 12-week follow-up. After the 12-week intervention, we found a moderation effect of age in the relative (%) change (p = 0.011) and absolute (Δ) change (p = 0.027) of MF, and a moderation effect of sex in %MF (p = 0.001), but not in ΔMF (p = 0.069). Regarding patients' age, the change of MF was only significantly different between EXG and CNG patients aged 60-70 years (%MF, EXG: + 34.6%, CNG: - 20.1%, p < 0.001; ΔMF, EXG: + 44.4 N, CNG: - 22.1 N, p < 0.001). Regarding patients' sex, the change of MF was only significantly different between EXG and CNG female patients (%MF, EXG: + 23.9%, CNG: - 23.6%, p < 0.001). Age and sex did not significantly moderate changes in MF measures after 12 weeks of follow-up. We conclude that both age and sex of haemodialysis patients affect their functional response to IRT in the short term.Trial Registration: Intradialytic Resistance Training in Haemodialysis Patients (IRTHEP)-#NCT03511924, 30/04/2018, https://clinicaltrials.gov/ct2/show/NCT03511924 .
Collapse
Affiliation(s)
- Aurel Zelko
- Department of Health Psychology and Research Methodology, Faculty of Medicine, Pavol Jozef Safarik University, 040 11, Kosice, Slovakia. .,Graduate School Kosice Institute for Society and Health, Faculty of Medicine, Pavol Jozef Safarik University, 040 11, Kosice, Slovakia. .,Department of Community and Occupational Medicine, University Medical Center Groningen, University of Groningen, 9700 RB, Groningen, The Netherlands.
| | - Jaroslav Rosenberger
- grid.11175.330000 0004 0576 0391Department of Health Psychology and Research Methodology, Faculty of Medicine, Pavol Jozef Safarik University, 040 11 Kosice, Slovakia ,grid.11175.330000 0004 0576 0391Graduate School Kosice Institute for Society and Health, Faculty of Medicine, Pavol Jozef Safarik University, 040 11 Kosice, Slovakia ,grid.10979.360000 0001 1245 3953Olomouc University Social Health Institute, Palacky University Olomouc, 771 11 Olomouc, Czech Republic ,grid.11175.330000 0004 0576 03912nd Department of Internal Medicine, Faculty of Medicine, Pavol Jozef Safarik University, 040 11 Kosice, Slovakia ,Fresenius Medical Care-Dialysis Services Kosice, 040 11 Kosice, Slovakia
| | - Peter Kolarcik
- grid.11175.330000 0004 0576 0391Department of Health Psychology and Research Methodology, Faculty of Medicine, Pavol Jozef Safarik University, 040 11 Kosice, Slovakia ,grid.10979.360000 0001 1245 3953Olomouc University Social Health Institute, Palacky University Olomouc, 771 11 Olomouc, Czech Republic
| | - Andrea Madarasova Geckova
- grid.11175.330000 0004 0576 0391Department of Health Psychology and Research Methodology, Faculty of Medicine, Pavol Jozef Safarik University, 040 11 Kosice, Slovakia ,grid.10979.360000 0001 1245 3953Olomouc University Social Health Institute, Palacky University Olomouc, 771 11 Olomouc, Czech Republic ,grid.7634.60000000109409708Institute of Applied Psychology, Faculty of Social and Economic Sciences, Comenius University in Bratislava, 821 05 Bratislava, Slovakia
| | - Jitse P. van Dijk
- grid.11175.330000 0004 0576 0391Graduate School Kosice Institute for Society and Health, Faculty of Medicine, Pavol Jozef Safarik University, 040 11 Kosice, Slovakia ,grid.4830.f0000 0004 0407 1981Department of Community and Occupational Medicine, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands ,grid.10979.360000 0001 1245 3953Olomouc University Social Health Institute, Palacky University Olomouc, 771 11 Olomouc, Czech Republic
| | - Sijmen A. Reijneveld
- grid.4830.f0000 0004 0407 1981Department of Community and Occupational Medicine, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands
| |
Collapse
|
12
|
Hou W, Zhai L, Yang Y, Gu S, Li C, Yang Y, Zhu Y. Is physical activity effective against cancer-related fatigue in lung cancer patients? An umbrella review of systematic reviews and meta-analyses. Support Care Cancer 2023; 31:161. [PMID: 36781549 DOI: 10.1007/s00520-023-07627-4] [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: 07/11/2022] [Accepted: 02/01/2023] [Indexed: 02/15/2023]
Abstract
OBJECTIVES To discuss the effects of physical activity on cancer-related fatigue (CRF) in lung cancer patients, summarize the types of physical activity in the published reviews, assess the quality of the evidence, and provide suggestions for the clinical selection of exercise intervention. METHODS PubMed, EMBASE, Web of Science, and the Cochrane Database of Systematic Reviews were searched through 8 November 2021 to identify relevant systematic reviews and meta-analyses. We also performed a manual search of the reference lists of included articles as supplements. Two researchers independently performed literature screening, data extraction, and quality assessment. The umbrella review has been registered in the International Prospective Register of Systematic Review (PROSPERO) registry (CRD42021292548). RESULTS From the 13 systematic reviews or meta-analyses identified, 10 physical activity interventions were included. The most mentioned intervention was aerobic combined with resistance exercise; however, no reduction of the symptoms of CRF was observed in lung cancer patients by this exercise intervention. Most of the patients who performed aerobic exercises alone showed improvement in CRF after the intervention. In addition, Tai Chi and breathing exercises have been shown to improve fatigue, but more high-quality research is still needed to support its effectiveness. CONCLUSIONS Aerobic exercise, respiratory muscle training, aerobic combined with balance training, and other exercise interventions have been shown to improve CRF in lung cancer patients. But it should be noted that according to the different treatment methods and disease stages of patients, individualized rehabilitation programs should be developed for patients. Due to the low methodological quality and evidence quality of some systematic reviews and meta-analyses included in this study, more high-quality clinical studies and systematic reviews are still needed for validation in the future. This umbrella review helps to identify effective ways of exercise to improve fatigue in lung cancer patients before dedicated evidence-based medical guidelines are established.
Collapse
Affiliation(s)
- Weiqian Hou
- The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, Henan, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450000, Henan, China
| | - Liwen Zhai
- The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, Henan, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450000, Henan, China
| | - Yujie Yang
- University of Health and Rehabilitation Sciences, Qingdao, 266000, Shandong, China
| | - Shanshan Gu
- Department of Physical Therapy, University of Toronto, Toronto, Ontario, Canada
| | - Conghui Li
- The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, Henan, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450000, Henan, China
| | - Yao Yang
- The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, Henan, China
- Academy of Medical Sciences, Zhengzhou University, Zhengzhou, 450000, Henan, China
| | - Yi Zhu
- The Fifth Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, 450000, Henan, China.
| |
Collapse
|
13
|
Scott JM, Feiveson AH, English KL, Spector ER, Sibonga JD, Dillon EL, Ploutz-Snyder L, Everett ME. Effects of exercise countermeasures on multisystem function in long duration spaceflight astronauts. NPJ Microgravity 2023; 9:11. [PMID: 36737441 PMCID: PMC9898566 DOI: 10.1038/s41526-023-00256-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Accepted: 01/10/2023] [Indexed: 02/05/2023] Open
Abstract
Exercise training is a key countermeasure used to offset spaceflight-induced multisystem deconditioning. Here, we evaluated the effects of exercise countermeasures on multisystem function in a large cohort (N = 46) of astronauts on long-duration spaceflight missions. We found that during 178 ± 48 d of spaceflight, ~600 min/wk of aerobic and resistance exercise did not fully protect against multisystem deconditioning. However, substantial inter-individual heterogeneity in multisystem response was apparent with changes from pre to postflight ranging from -30% to +5%. We estimated that up to 17% of astronauts would experience performance-limiting deconditioning if current exercise countermeasures were used on future spaceflight missions. These findings support the need for refinement of current countermeasures, adjunct interventions, or enhanced requirements for preflight physiologic and functional capacity for the protection of astronaut health and performance during exploration missions to the moon and beyond.
Collapse
Affiliation(s)
- Jessica M Scott
- Memorial Sloan Kettering Cancer Center, New York, NY, USA.
- Weill Cornell Medical College, New York, NY, USA.
| | - Alan H Feiveson
- National Aeronautics and Space Administration (NASA), Houston, TX, USA
| | - Kirk L English
- Milligan University, Milligan College, Elizabethton, TN, USA
| | | | - Jean D Sibonga
- National Aeronautics and Space Administration (NASA), Houston, TX, USA
| | | | | | - Meghan E Everett
- National Aeronautics and Space Administration (NASA), Houston, TX, USA.
| |
Collapse
|
14
|
Marques DL, Neiva HP, Marinho DA, Marques MC. Manipulating the Resistance Training Volume in Middle-Aged and Older Adults: A Systematic Review with Meta-Analysis of the Effects on Muscle Strength and Size, Muscle Quality, and Functional Capacity. Sports Med 2023; 53:503-518. [PMID: 36307745 DOI: 10.1007/s40279-022-01769-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2022] [Indexed: 01/28/2023]
Abstract
BACKGROUND Effective manipulation of the acute variables of resistance training is critical to optimizing muscle and functional adaptations in middle-aged and older adults. However, the ideal volume prescription (e.g., number of sets performed per exercise) in middle-aged and older adults remains inconclusive in the literature. OBJECTIVE The effects of single versus multiple sets per exercise on muscle strength and size, muscle quality, and functional capacity in middle-aged and older adults were compared. Moreover, the effects of single versus multiple sets per exercise on muscular and functional gains were also examined, considering the influence of training duration. METHODS Randomized controlled trials and non-randomized controlled trials comparing single versus multiple sets per exercise on muscle strength, muscle size, muscle quality, or functional capacity in middle-aged and older adults (aged ≥ 50 years) in the PubMed/MEDLINE, Web of Science, and Scopus databases (01/09/2021, updated on 15/05/2022) were identified. A random-effects meta-analysis was used. RESULTS Fifteen studies were included (430 participants; 93% women; age 57.9-70.1 years). Multiple sets per exercise produced a greater effect than single sets on lower-limb strength (standardized mean difference [SMD] = 0.29; 95% confidence interval [CI] 0.07-0.51; mean difference [MD] = 1.91 kg; 95% CI 0.50-3.33) and muscle quality (SMD = 0.40; 95% CI 0.05-0.75) gains. There were no differences between single versus multiple sets per exercise for upper-limb strength (SMD = 0.13; 95% CI - 0.14 to 0.40; MD = 0.11 kg; 95% CI - 0.52 to 0.75), muscle size (SMD = 0.15; 95% CI - 0.07 to 0.37), and functional capacity (SMD = 0.01; 95% CI - 0.47 to 0.50) gains. In addition, there were no differences between single versus multiple sets on muscle strength and size gains for training durations ≤ 12 weeks or > 12 weeks. CONCLUSIONS Multiple sets per exercise produced greater lower-limb strength and muscle quality gains than single sets in middle-aged and older adults, although the magnitude of the difference was small. In contrast, single sets per exercise were sufficient to improve upper-limb strength, muscle size, and functional capacity in these populations. Despite these findings, researchers should conduct future high-quality, pre-registered, and blinded randomized controlled trials to strengthen the scientific evidence on this topic.
Collapse
Affiliation(s)
- Diogo Luís Marques
- Department of Sport Sciences, University of Beira Interior, Covilhã, Portugal.
| | - Henrique Pereira Neiva
- Department of Sport Sciences, University of Beira Interior, Covilhã, Portugal
- Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), Covilhã, Portugal
| | - Daniel Almeida Marinho
- Department of Sport Sciences, University of Beira Interior, Covilhã, Portugal
- Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), Covilhã, Portugal
| | - Mário Cardoso Marques
- Department of Sport Sciences, University of Beira Interior, Covilhã, Portugal
- Research Center in Sports Sciences, Health Sciences and Human Development (CIDESD), Covilhã, Portugal
| |
Collapse
|
15
|
Jiang D, Liu C, Chen Y, Xing X, Zheng D. Whole body vibration activates AMPK/CPT1 signaling pathway of skeletal muscle in young and aging mice based on metabolomics study. Endocr J 2022; 69:585-596. [PMID: 34955464 DOI: 10.1507/endocrj.ej21-0343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Whole-body vibration (WBV) can improve skeletal muscle function in aging mice, but whether the effect on young and aging skeletal muscle is consistent has not been studied. We selected C57BL/6J mouse models, which were divided into young control group (YC), young vibration group (YV), aging control group (AC) and aging vibration group (AV). After 12 weeks of WBV, we found that compared with the YC group, the pathways of linoleic acid metabolism, biosynthesis of unsaturated fatty acids, arachidonic acid metabolism, nicotinate and nicotinamide metabolism, glycine, serine and threonine metabolism, and arginine and proline metabolism improved significantly in the YV group. Compared with the AC group, the pathways of arachidonic acid metabolism, alpha-linolenic acid metabolism, biosynthesis of unsaturated fatty acids, pentose and glucuronate interconversions and pentose phosphate pathway improved significantly in the AV group. Furthermore, we found that WBV decreased triglyceride (TG), total cholesterol (TC), and free fatty acid (FFA) levels in aging mice, improved mitochondrial membrane potential, and increased the expression of phosphorylated activated protein kinase (p-AMPK), peroxisome proliferator-activated receptor coactivator-1α (PGC-1α) and carnitine palmitoyl transferase 1B (CPT1B) in the skeletal muscle of young and aging mice. Our study revealed that WBV mainly improved lipid metabolism and amino acid metabolism pathways of skeletal muscle in young mice and mainly improved lipid metabolism and glucose metabolism pathways of skeletal muscle in aging mice. WBV can activate the AMPK/CPT1 signaling pathway and improve mitochondrial function in skeletal muscle in both young and aging mice.
Collapse
Affiliation(s)
- Dingwen Jiang
- Department of Endocrinology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Chang Liu
- Department of Endocrinology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Ye Chen
- School of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou, Liaoning, China
| | - Xuejiao Xing
- Department of Endocrinology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
| | - Danmeng Zheng
- Department of Endocrinology, First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning, China
| |
Collapse
|
16
|
Cordingley DM, Anderson JE, Cornish SM. Myokine Response to Blood-Flow Restricted Resistance Exercise in Younger and Older Males in an Untrained and Resistance-Trained State: A Pilot Study. JOURNAL OF SCIENCE IN SPORT AND EXERCISE 2022. [PMCID: PMC9099348 DOI: 10.1007/s42978-022-00164-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Purpose The purpose of this study was to examine the response of myokines to blood-flow restricted resistance-exercise (BFR-RE) in younger and older males before and after completing a 12-week resistance-training program. Methods There were 8 younger (24.8 ± 3.9 yrs) and 7 older (68.3 ± 5.0 yrs) untrained male participants completed this study. Anthropometric and maximal strength (1RM) measurements were collected before and after a 12-week, supervised, progressive full-body resistance-training program. As well, an acute bout of full-body BFR-RE was performed with venipuncture blood samples collected before and immediately following the BFR-RE, followed by sampling at 3, 6, 24 and 48 h. Results The 12-week training program stimulated a 32.2% increase in average strength and 30% increase in strength per kg of fat free mass. The response of particular myokines to the acute bout of BFR-RE was influenced training status (IL-4, untrained = 78.1 ± 133.2 pg/mL vs. trained = 59.8 ± 121.6 pg/mL, P = 0.019; IL-7, untrained = 3.46 ± 1.8 pg/mL vs. trained = 2.66 ± 1.3 pg/mL, P = 0.047) or both training and age (irisin, P = 0.04; leukemia inhibitory factor, P < 0.001). As well, changes in strength per kg of fat free mass were correlated with area under the curve for IL-4 (r = 0.537; P = 0.039), IL-6 (r = 0. 525; P = 0.044) and LIF (r = − 0.548; P = 0.035) in the untrained condition. Conclusion This study identified that both age and training status influence the myokine response to an acute bout of BFR-RE with the release of IL-4, IL-6 and LIF in the untrained state being associated with changes in strength per kg of fat free mass.
Collapse
Affiliation(s)
- Dean M. Cordingley
- Applied Health Sciences, University of Manitoba, Winnipeg, MB R3T 2N2 Canada
- Pan Am Clinic Foundation, 75 Poseidon Bay, Winnipeg, MB R3M 3E4 Canada
| | | | - Stephen M. Cornish
- Applied Health Sciences, University of Manitoba, Winnipeg, MB R3T 2N2 Canada
- Faculty of Kinesiology and Recreation Management, University of Manitoba, 110 Frank Kennedy Centre, Winnipeg, MB R3T 2N2 Canada
- Centre for Aging, University of Manitoba, Winnipeg, MB R3T 2N2 Canada
| |
Collapse
|
17
|
de Azevedo Bach S, Radaelli R, Beck Schemes M, Neske R, Garbelotto C, Roschel H, Silveira Pinto R, Dornelles Schneider C. Can supplemental protein to low-protein containing meals superimpose on resistance-training muscle adaptations in older adults? A randomized clinical trial. Exp Gerontol 2022; 162:111760. [PMID: 35240263 DOI: 10.1016/j.exger.2022.111760] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/08/2022] [Accepted: 02/25/2022] [Indexed: 11/18/2022]
Abstract
PURPOSE To evaluate the effects of supplementing protein to the low-protein containing meals on selected parameters of muscle mass, strength, and functional capacity in older individuals undergoing resistance training. METHODS Thirty-one male and female older individuals (60 to 80 years) were randomized into either a whey protein/WP (n = 15, 20 g at breakfast + 20 g at dinner) or placebo-maltodextrin/PL (n = 16, 20 g at breakfast + 20 g at dinner) group. Both groups underwent a supervised, progressive resistance training (2×/week) program for 12 weeks. Maximal isometric voluntary contraction (MIVC) of knee extensors, muscle thickness (MT) of knee extensors and elbow flexors, rectus femoris muscle quality (MQ), body composition (as measured by DXA) and functional capacity [as measured by 30-s sit-to-stand (30ss) and timed-up-and-go tests (TUG)] were evaluated at baseline and after the 12-week intervention. RESULTS Knee extensor MIVC (WP ∆ = 11.9 ± 11.4% and PL ∆ = 12.9 ± 9.9%) was significantly increased over time, with no between-group differences (all p < 0.05 for main effect of time). Upper- and lower-limb MT were significantly increased over time, with no effect of supplementation (WP: ∆ = 7.0 ± 7.3%, PL: ∆ = 9.5 ± 10.3%; and WP: ∆ = 4.5 ± 5.8%, PL: ∆ = 14.7 ± 28.9%, respectively; all p = 0.001 for main effect of time, respectively). Total and upper-limb lean mass were significantly increased, irrespective of the dietary intervention (WP: ∆ = 0.2 ± 6.3%, PL: ∆ = 1.8 ± 2.9%; and WP: ∆ = 0.10 ± 0.03%, PL: ∆ = 0.15 ± 0.02%, respectively; all p < 0.05 for main effect of time). Main effects of time (all p < 0.05) were also found for 30SS and TUG (fast and usual speeds) (WP: ∆ = 18.2 ± 34.4%, PL: ∆ = 10.4 ± 16.9%; WP: ∆ = 5.4 ± 6.7%, PL: ∆ = 0.7 ± 6.0% and WP: ∆ = 3.3 ± 6.1%, PL: ∆ = 2.3 ± 5.2%, respectively). CONCLUSION Supplementing additional whey protein to the lowest-protein containing meals (i.e., ~20 g at breakfast and ~20 g at dinner, daily) did not further augment resistance training-induced neuromuscular adaptations (i.e. muscle strength and mass) in healthy older individuals.
Collapse
Affiliation(s)
- Simone de Azevedo Bach
- Graduate Program in Rehabilitation Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil.
| | - Régis Radaelli
- Neuromuscular Research Lab, Faculty of Human Kinetics, University of Lisbon, Cruz Quebrada Dafundo, Portugal
| | - Márcio Beck Schemes
- Strength Training Research Group, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Rodrigo Neske
- Strength Training Research Group, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Charlles Garbelotto
- Nutrition Course, Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
| | - Hamilton Roschel
- Applied Physiology and Nutrition Group, School of Physical Education and Sport, Division of Rheumatology, Faculty of Medicine, FMUSP, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Ronei Silveira Pinto
- Strength Training Research Group, School of Physical Education, Physiotherapy and Dance, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Cláudia Dornelles Schneider
- Graduate Program in Rehabilitation Sciences, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, Brazil
| |
Collapse
|
18
|
Aschauer R, Unterberger S, Zöhrer PA, Draxler A, Franzke B, Strasser EM, Wagner KH, Wessner B. Effects of Vitamin D3 Supplementation and Resistance Training on 25-Hydroxyvitamin D Status and Functional Performance of Older Adults: A Randomized Placebo-Controlled Trial. Nutrients 2021; 14:nu14010086. [PMID: 35010961 PMCID: PMC8746949 DOI: 10.3390/nu14010086] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/22/2021] [Accepted: 12/23/2021] [Indexed: 12/26/2022] Open
Abstract
Vitamin D status is associated with muscle strength and performance in older adults. To examine the additive effects of vitamin D3 supplementation during resistance training, 100 seniors (65–85 years) participated in a 16-week intervention. Besides a daily dose of 400 mg of calcium, participants received either 800 IU vitamin D3 per day (VDD), 50,000 IU vitamin D3 per month (VDM) or nothing (CON). After the initial loading phase of four weeks, all groups started a 10-week resistance training program. Assessments of 25-hydroxyvitamin D (25(OH)D) status, muscle strength endurance (30-s chair stand and arm curl tests), aerobic capacity (6-min walk test) and functional mobility (gait speed and timed up and go test) were undertaken at baseline, after four weeks and at the end of the study. 25(OH)D status significantly improved in VDD and VDM, but not in CON (time x group: p = 0.021), as 15.2% of CON, 40.0% of VDD and 61.1% of VDM reached vitamin D sufficiency (>30 ng/mL; p = 0.004). Chair stand test, arm curl test, 6-min walk test, gait speed and timed up and go test improved over the whole intervention period (p < 0.05), however only chair stand and arm curl test were selectively affected by resistance training (p < 0.001). Neither muscle strength endurance, nor functional mobility or aerobic capacity were modulated by vitamin D supplementation. Therefore, the mere amelioration of 25(OH)D status of older adults does not lead to an additive effect on muscular performance during RT.
Collapse
Affiliation(s)
- Rudolf Aschauer
- Research Platform Active Ageing, University of Vienna, 1090 Vienna, Austria; (R.A.); (S.U.); (P.A.Z.); (A.D.); (B.F.); (K.-H.W.)
- Centre for Sport Science and University Sports, University of Vienna, 1150 Vienna, Austria
| | - Sandra Unterberger
- Research Platform Active Ageing, University of Vienna, 1090 Vienna, Austria; (R.A.); (S.U.); (P.A.Z.); (A.D.); (B.F.); (K.-H.W.)
- Centre for Sport Science and University Sports, University of Vienna, 1150 Vienna, Austria
| | - Patrick A. Zöhrer
- Research Platform Active Ageing, University of Vienna, 1090 Vienna, Austria; (R.A.); (S.U.); (P.A.Z.); (A.D.); (B.F.); (K.-H.W.)
- Department of Nutritional Sciences, University of Vienna, 1090 Vienna, Austria
| | - Agnes Draxler
- Research Platform Active Ageing, University of Vienna, 1090 Vienna, Austria; (R.A.); (S.U.); (P.A.Z.); (A.D.); (B.F.); (K.-H.W.)
- Department of Nutritional Sciences, University of Vienna, 1090 Vienna, Austria
| | - Bernhard Franzke
- Research Platform Active Ageing, University of Vienna, 1090 Vienna, Austria; (R.A.); (S.U.); (P.A.Z.); (A.D.); (B.F.); (K.-H.W.)
- Department of Nutritional Sciences, University of Vienna, 1090 Vienna, Austria
| | - Eva-Maria Strasser
- Karl Landsteiner Institute for Remobilization and Functional Health/Institute for Physical Medicine and Rehabilitation, Kaiser Franz Joseph Hospital, Social Medical Center South, 1100 Vienna, Austria;
| | - Karl-Heinz Wagner
- Research Platform Active Ageing, University of Vienna, 1090 Vienna, Austria; (R.A.); (S.U.); (P.A.Z.); (A.D.); (B.F.); (K.-H.W.)
- Department of Nutritional Sciences, University of Vienna, 1090 Vienna, Austria
| | - Barbara Wessner
- Research Platform Active Ageing, University of Vienna, 1090 Vienna, Austria; (R.A.); (S.U.); (P.A.Z.); (A.D.); (B.F.); (K.-H.W.)
- Centre for Sport Science and University Sports, University of Vienna, 1150 Vienna, Austria
- Correspondence: ; Tel.: +43-1-4277-48875
| |
Collapse
|
19
|
Thomas E, Gentile A, Lakicevic N, Moro T, Bellafiore M, Paoli A, Drid P, Palma A, Bianco A. The effect of resistance training programs on lean body mass in postmenopausal and elderly women: a meta-analysis of observational studies. Aging Clin Exp Res 2021; 33:2941-2952. [PMID: 33880736 PMCID: PMC8595144 DOI: 10.1007/s40520-021-01853-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/31/2021] [Indexed: 12/25/2022]
Abstract
Aging and menopause are associated with morphological and functional changes which may lead to loss of muscle mass and therefore quality of life. Resistance training (RT) is an effective training mode to increase muscle mass. We reviewed the existing literature to identify studies implementing RT protocols and evaluating muscle hypertrophy exclusively in healthy, postmenopausal and elderly women. Participants’ age range was comprised between 50 and 80 years. The primary outcome observed was muscle hypertrophy. Fat mass was also evaluated, if available. PubMed and Web of Science were the screened database, and original articles written in English and published from 2000 up to 2020 were included. 26 articles were considered eligible and included. Quality assessment revealed a “moderate quality” of the included studies, however the majority of studies was able to reach level 4 of evidence and on overall grade of recommendation C. In total, data from 745 female participants subjected to different forms of resistance training were considered. Heterogeneity across studies was present regarding study design, intervention length (mean 16 weeks), training frequency (3 d/w), no. of exercises (n = 7.4) and participants’ age (65.8 ± 4.9 years). Small-to-moderate significant increases (k = 43; SMD = 0.44; 95% CI 0.28; 0.60; p < 0.0001) of lean body mass were observed in post-menopausal and elderly women, regardless of age, intervention period, weekly training frequency and no. of exercises. No effects were noted for fat mass (k = 17; SMD = 0.27; 95% CI − 0.02; 0.55; p = 0.07). Studies need to concentrate on providing information regarding training parameters to more effectively counteract the effects of aging and menopause on skeletal muscle mass.
Collapse
Affiliation(s)
- Ewan Thomas
- Sport and Exercise Sciences Research Unit, University of Palermo, Via Giovanni Pascoli 6, 90144, Palermo, Italy
| | - Ambra Gentile
- PhD Program in Health Promotion and Cognitive Sciences, University of Palermo, Via Giovanni Pascoli 6, 90144, Palermo, Italy
| | - Nemanja Lakicevic
- PhD Program in Health Promotion and Cognitive Sciences, University of Palermo, Via Giovanni Pascoli 6, 90144, Palermo, Italy
| | - Tatiana Moro
- Department of Biomedical Sciences, University of Padova, Via Marzolo 3, 35031, Padova, Italy.
| | - Marianna Bellafiore
- Sport and Exercise Sciences Research Unit, University of Palermo, Via Giovanni Pascoli 6, 90144, Palermo, Italy
| | - Antonio Paoli
- Department of Biomedical Sciences, University of Padova, Via Marzolo 3, 35031, Padova, Italy
| | - Patrik Drid
- Faculty of Sport and Physical Education, University of Novi Sad, Lovćenska 16, 2110, Novi Sad, Serbia
| | - Antonio Palma
- Sport and Exercise Sciences Research Unit, University of Palermo, Via Giovanni Pascoli 6, 90144, Palermo, Italy
| | - Antonino Bianco
- Sport and Exercise Sciences Research Unit, University of Palermo, Via Giovanni Pascoli 6, 90144, Palermo, Italy
| |
Collapse
|
20
|
Kistler-Fischbacher M, Yong JS, Weeks BK, Beck BR. A Comparison of Bone-Targeted Exercise With and Without Antiresorptive Bone Medication to Reduce Indices of Fracture Risk in Postmenopausal Women With Low Bone Mass: The MEDEX-OP Randomized Controlled Trial. J Bone Miner Res 2021; 36:1680-1693. [PMID: 34033146 DOI: 10.1002/jbmr.4334] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 05/03/2021] [Accepted: 05/06/2021] [Indexed: 12/18/2022]
Abstract
The goal of the MEDEX-OP trial was to compare the efficacy of a known effective high-intensity resistance and impact training (HiRIT) with a low-intensity exercise control (Buff Bones® [BB]), alone or in combination with antiresorptive bone medication, on indices of fracture risk (bone mass, body composition, muscle strength, functional performance), compliance, and safety. Primary study outcomes were 8-month change in lumbar spine (LS) and total hip (TH) bone mineral density (BMD). Healthy postmenopausal women with low bone mass (T-score ≤ -1.0) on or off stable doses (≥12 months) of antiresorptive medication were recruited. A total of 115 women (aged 63.6 ± 0.7 years; body mass index [BMI] 25.5 kg/m2 ; femoral neck [FN] T-score -1.8 ± 0.1) were randomly allocated to 8-month, twice-weekly, 40-minute HiRIT (5 sets of 5 repetitions, >80% to 85% 1 repetition maximum) or BB (low-intensity, Pilates-based training), stratified by medication intake, resulting in four groups: HiRIT (n = 42), BB (n = 44), HiRIT-med (n = 15), BB-med (n = 14). HiRIT improved LS BMD (1.9 ± 0.3% versus 0.1 ± 0.4%, p < 0.001) and stature (0.2 ± 0.1 cm versus -0.0 ± 0.1 cm, p = 0.004) more than BB. Both programs improved functional performance, but HiRIT effects were larger for leg and back muscle strength and the five times sit-to-stand test (p < 0.05). There was a positive relationship between maximum weight lifted and changes in LS BMD and muscle strength in the HiRIT groups. Exploratory analyses suggest antiresorptive medication may enhance exercise efficacy at the proximal femur and lumbar spine. Exercise compliance was good (82.4 ± 1.3%) and both programs were well tolerated (7 adverse events: HiRIT 4; BB 3). HiRIT improved indices of fracture risk significantly more than Buff Bones®. More trials combining bone medication and bone-targeted exercise are needed. © 2021 American Society for Bone and Mineral Research (ASBMR).
Collapse
Affiliation(s)
- Melanie Kistler-Fischbacher
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia.,School of Health Sciences and Social Work, Griffith University, Gold Coast, Australia
| | - Jedidah S Yong
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia.,School of Health Sciences and Social Work, Griffith University, Gold Coast, Australia
| | - Benjamin K Weeks
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia.,School of Health Sciences and Social Work, Griffith University, Gold Coast, Australia
| | - Belinda R Beck
- Menzies Health Institute Queensland, Griffith University, Gold Coast, Australia.,School of Health Sciences and Social Work, Griffith University, Gold Coast, Australia.,The Bone Clinic, Brisbane, Australia
| |
Collapse
|
21
|
Endo Y, Zhang Y, Olumi S, Karvar M, Argawal S, Neppl RL, Sinha I. Exercise-induced gene expression changes in skeletal muscle of old mice. Genomics 2021; 113:2965-2976. [PMID: 34214629 DOI: 10.1016/j.ygeno.2021.06.035] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 06/13/2021] [Accepted: 06/24/2021] [Indexed: 10/21/2022]
Abstract
Exercise is believed to be beneficial for skeletal muscle functions across all ages. Regimented exercise is often prescribed as an effective treatment/prophylaxis for age-related loss of muscle mass and function, known as sarcopenia, and plays an important role in the maintenance of mobility and functional independence in the elderly. However, response to exercise declines with aging, resulting in limited gain of muscle strength and endurance. These changes likely reflect age-dependent alterations in transcriptional response underlying the muscular adaptation to exercise. The exact changes in gene expression accompanying exercise, however, are largely unknown, and elucidating them is of a great clinical interest for understanding and optimizing the exercise-based therapies for sarcopenia. In order to characterize the exercise-induced transcriptomic changes in aged muscle, a paired-end RNA sequencing was performed on rRNA-depleted total RNA extracted from the gastrocnemius muscles of 24 months-old mice after 8 weeks of regimented exercise (exercise group) or no formal exercise program (sedentary group). Differential gene expression analysis of aged skeletal muscle revealed upregulations in the group of genes involved in neurotransmission and neuroexcitation, as well as equally notable absence of anabolic gene upregulations in the exercise group. In particular, genes encoding the transporters and receptor components of glutaminergic transmission were significantly upregulated in exercised muscles, as exemplified by Gria 1, Gria 2 and Grin2c encoding glutamate receptor 1, 2 and 2C respectively, Grin1 and Grin2b encoding N-methyl-d-aspartate receptors (NMDARs), Nptx1 responsible for glutaminergic receptor clustering, and Slc1a2 and Slc17a7 regulating synaptic uptake of glutamate. These changes were accompanied by an increase in the post-synaptic density of NMDARs and acetylcholine receptors (AChRs), as well as their innervation at neuromuscular junctions (NMJs). These results suggest that neural responses predominate the adaptive response of aged skeletal muscle to exercise, and indicate a possibility that glutaminergic transmission at NMJs may be present and responsible for synaptic protection and neural remodeling accompanying the exercise-induced functional enhancement in aged skeletal muscle. In addition, the absence of upregulations in the anabolic pathways highlights them as the area of potential pharmacological targeting for optimizing exercise-led sarcopenia therapy.
Collapse
Affiliation(s)
- Yori Endo
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Yuteng Zhang
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States; Department of Plastic and Aesthetic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Shayan Olumi
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Mehran Karvar
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Shailesh Argawal
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States
| | - Ronald L Neppl
- Department of Orthopedic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Indranil Sinha
- Division of Plastic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States; Harvard Stem Cell Institute, Cambridge, MA, United States.
| |
Collapse
|
22
|
Tao K, Duan Y, Wang H, Zeng D, Fang Z, Yan H, Lu Y. De novo Explorations of Sarcopenia via a Dynamic Model. Front Physiol 2021; 12:670381. [PMID: 34122142 PMCID: PMC8194405 DOI: 10.3389/fphys.2021.670381] [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: 03/17/2021] [Accepted: 05/07/2021] [Indexed: 12/17/2022] Open
Abstract
Background: The cause of sarcopenia has been observed over decades by clinical trials, which, however, are still insufficient to systematically unravel the enigma of how resistance exercise mediates skeletal muscle mass. Materials and Methods: Here, we proposed a minimal regulatory network and developed a dynamic model to rigorously investigate the mechanism of sarcopenia. Our model is consisted of eight ordinary differential equations and incorporates linear and Hill-function terms to describe positive and negative feedbacks between protein species, respectively. Results: A total of 720 samples with 10 scaled intensities were included in simulations, which revealed the expression level of AKT (maximum around 3.9-fold) and mTOR (maximum around 5.5-fold) at 3, 6, and 24 h at high intensity, and non-monotonic relation (ranging from 1.2-fold to 1.7-fold) between the graded intensities and skeletal muscle mass. Furthermore, continuous dynamics (within 24 h) of AKT, mTOR, and other proteins were obtained accordingly, and we also predicted the delaying effect with the median of maximized muscle mass shifting from 1.8-fold to 4.6-fold during a 4-fold increase of delay coefficient. Conclusion: The de novo modeling framework sheds light on the interdisciplinary methodology integrating computational approaches with experimental results, which facilitates the deeper understandings of exercise training and sarcopenia.
Collapse
Affiliation(s)
- Kuan Tao
- School of Sports Engineering, Beijing Sport University, Beijing, China
| | - Yushuang Duan
- School of Sport Medicine and Physical Therapy, Beijing Sport University, Beijing, China
| | - Huohuo Wang
- School of Sport Medicine and Physical Therapy, Beijing Sport University, Beijing, China
| | - Dan Zeng
- School of Sport Medicine and Physical Therapy, Beijing Sport University, Beijing, China
| | - Zilong Fang
- School of Sport Medicine and Physical Therapy, Beijing Sport University, Beijing, China
| | - Huiping Yan
- School of Sport Medicine and Physical Therapy, Beijing Sport University, Beijing, China
| | - Yifan Lu
- School of Sport Medicine and Physical Therapy, Beijing Sport University, Beijing, China.,Key Laboratory of Sports and Physical Fitness of the Ministry of Education, Beijing Sport University, Beijing, China
| |
Collapse
|
23
|
Park S, Yuan H, Zhang T, Wu X, Huang SK, Cho SM. Long-term silk peptide intake promotes skeletal muscle mass, reduces inflammation, and modulates gut microbiota in middle-aged female rats. Biomed Pharmacother 2021; 137:111415. [PMID: 33761619 DOI: 10.1016/j.biopha.2021.111415] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/10/2021] [Accepted: 02/16/2021] [Indexed: 12/22/2022] Open
Abstract
Aging alters body composition to induce sarcopenia, particularly in women, but the mechanism remains unclear. We hypothesized that silk peptide(SP) intake could prevent an age-related decrease in muscle mass and strength in middle-aged female rats and explored the action mechanism. After the acute intake of SP and defatted soybean peptides, serum concentrations of amino acids were measured in ten middle-aged rats in each group. Forty 12-month-old female Sprague-Dawley rats were fed a high-fat and high-carbohydrate diet for 12 weeks including 0.5 g casein/kg body weight(BW)/day(Aged), 0.15 g SP plus 0.35 g casein/kg BW/day(Low-SP), 0.5 g SP/kg BW/day(High-SP), or 40 mg metformin plus 0.5 g casein/kg BW/day(Metformin). Ten rats aged 7-week old(Young) had the same treatment as the Aged-group. The body composition, grip strength, glucose metabolism, intestinal tissue morphology, and gut microbiota were also determined. After an acute consumption, total amino acids were more quickly absorbed and maintained at higher levels in SP than soybean peptides. Lean body mass(LBM) and grip strength were lower in the Aged-group than the Young and Low-SP groups, and the High-SP regimen increased these parameters as much as the Young-group. Serum concentrations and mRNA expression of TNF-α in the gastrocnemius and quadriceps muscles were higher in the Aged-group than the Young-group, whereas SP intake reduced their serum levels and skeletal muscles. Glucose and insulin tolerance indicated that insulin resistance was elevated in the Aged-group compared to the Young-group, while Low-SP and High-SP alleviated them as much as the Young-group. High-SP increased serum propionate and butyrate concentrations compared to the Aged-group. SP intake increased the relative abundance of Bacteroides and Prevotella and decreased Blautia and Clostridium in the feces. In conclusion, SP intake protects against a decrease in lean body mass and grip strength in middle-aged female rats. The protection was partly related to maintaining higher serum concentrations of total amino acids after SP consumption and decreasing inflammation and insulin resistance through gut microbiota modulation.
Collapse
Affiliation(s)
- Sunmin Park
- Department of Food and Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan 31499, Republic of Korea; Department of Bio-Convergence System, Hoseo University, Asan 31499, Republic of Korea.
| | - Heng Yuan
- Department of Bio-Convergence System, Hoseo University, Asan 31499, Republic of Korea
| | - Ting Zhang
- Department of Bio-Convergence System, Hoseo University, Asan 31499, Republic of Korea
| | - Xuangao Wu
- Department of Bio-Convergence System, Hoseo University, Asan 31499, Republic of Korea
| | - Shao Kai Huang
- Department of Bio-Convergence System, Hoseo University, Asan 31499, Republic of Korea
| | - Song Mee Cho
- Department of Food and Nutrition, Obesity/Diabetes Research Center, Hoseo University, Asan 31499, Republic of Korea
| |
Collapse
|
24
|
Wherry SJ, Miller RM, Jeong SH, Beavers KM. The Ability of Exercise to Mitigate Caloric Restriction-Induced Bone Loss in Older Adults: A Structured Review of RCTs and Narrative Review of Exercise-Induced Changes in Bone Biomarkers. Nutrients 2021; 13:1250. [PMID: 33920153 PMCID: PMC8070587 DOI: 10.3390/nu13041250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 04/07/2021] [Accepted: 04/09/2021] [Indexed: 11/17/2022] Open
Abstract
Despite the adverse metabolic and functional consequences of obesity, caloric restriction- (CR) induced weight loss is often contra-indicated in older adults with obesity due to the accompanying loss of areal bone mineral density (aBMD) and subsequent increased risk of fracture. Several studies show a positive effect of exercise on aBMD among weight-stable older adults; however, data on the ability of exercise to mitigate bone loss secondary to CR are surprisingly equivocal. The purpose of this review is to provide a focused update of the randomized controlled trial literature assessing the efficacy of exercise as a countermeasure to CR-induced bone loss among older adults. Secondarily, we present data demonstrating the occurrence of exercise-induced changes in bone biomarkers, offering insight into why exercise is not more effective than observed in mitigating CR-induced bone loss.
Collapse
Affiliation(s)
- Sarah J. Wherry
- Division of Geriatric Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
- VA Eastern Colorado Geriatric Research, Education, and Clinical Center (GRECC), Aurora, CO 80045, USA
| | - Ryan M. Miller
- Department of Internal Medicine, Sections on Gerontology and Geriatric Medicine, Wake Forest School of Medicine, Winston-Salem, NC 27157, USA;
| | - Sarah H. Jeong
- Z. Smith Reynolds Library, Wake Forest University, Winston-Salem, NC 27109, USA;
| | - Kristen M. Beavers
- Department of Health and Exercise Science, Wake Forest University, Winston-Salem, NC 27109, USA
| |
Collapse
|
25
|
Watson MD, Cross BL, Grosicki GJ. Evidence for the Contribution of Gut Microbiota to Age-Related Anabolic Resistance. Nutrients 2021; 13:706. [PMID: 33672207 PMCID: PMC7926629 DOI: 10.3390/nu13020706] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 02/08/2021] [Accepted: 02/19/2021] [Indexed: 12/11/2022] Open
Abstract
Globally, people 65 years of age and older are the fastest growing segment of the population. Physiological manifestations of the aging process include undesirable changes in body composition, declines in cardiorespiratory fitness, and reductions in skeletal muscle size and function (i.e., sarcopenia) that are independently associated with mortality. Decrements in muscle protein synthetic responses to anabolic stimuli (i.e., anabolic resistance), such as protein feeding or physical activity, are highly characteristic of the aging skeletal muscle phenotype and play a fundamental role in the development of sarcopenia. A more definitive understanding of the mechanisms underlying this age-associated reduction in anabolic responsiveness will help to guide promyogenic and function promoting therapies. Recent studies have provided evidence in support of a bidirectional gut-muscle axis with implications for aging muscle health. This review will examine how age-related changes in gut microbiota composition may impact anabolic response to protein feeding through adverse changes in protein digestion and amino acid absorption, circulating amino acid availability, anabolic hormone production and responsiveness, and intramuscular anabolic signaling. We conclude by reviewing literature describing lifestyle habits suspected to contribute to age-related changes in the microbiome with the goal of identifying evidence-informed strategies to preserve microbial homeostasis, anabolic sensitivity, and skeletal muscle with advancing age.
Collapse
Affiliation(s)
| | | | - Gregory J. Grosicki
- Biodynamics and Human Performance Center, Georgia Southern University (Armstrong Campus), Savannah, GA 31419, USA; (M.D.W.); (B.L.C.)
| |
Collapse
|
26
|
Resistance Training in Hypoxia as a New Therapeutic Modality for Sarcopenia-A Narrative Review. Life (Basel) 2021; 11:life11020106. [PMID: 33573198 PMCID: PMC7912455 DOI: 10.3390/life11020106] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/25/2021] [Accepted: 01/27/2021] [Indexed: 12/15/2022] Open
Abstract
Hypoxic training is believed to be generally useful for improving exercise performance in various athletes. Nowadays, exercise intervention in hypoxia is recognized as a new therapeutic modality for health promotion and disease prevention or treatment based on the lower mortality and prevalence of people living in high-altitude environments than those living in low-altitude environments. Recently, resistance training in hypoxia (RTH), a new therapeutic modality combining hypoxia and resistance exercise, has been attempted to improve muscle hypertrophy and muscle function. RTH is known to induce greater muscle size, lean mass, increased muscle strength and endurance, bodily function, and angiogenesis of skeletal muscles than traditional resistance exercise. Therefore, we examined previous studies to understand the clinical and physiological aspects of sarcopenia and RTH for muscular function and hypertrophy. However, few investigations have examined the combined effects of hypoxic stress and resistance exercise, and as such, it is difficult to make recommendations for implementing universal RTH programs for sarcopenia based on current understanding. It should also be acknowledged that a number of mechanisms proposed to facilitate the augmented response to RTH remain poorly understood, particularly the role of metabolic, hormonal, and intracellular signaling pathways. Further RTH intervention studies considering various exercise parameters (e.g., load, recovery time between sets, hypoxic dose, and intervention period) are strongly recommended to reinforce knowledge about the adaptational processes and the effects of this type of resistance training for sarcopenia in older people.
Collapse
|
27
|
Strasser B. Importance of Assessing Muscular Fitness in Secondary Care. Front Genet 2020; 11:583810. [PMID: 33193714 PMCID: PMC7655542 DOI: 10.3389/fgene.2020.583810] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/12/2020] [Indexed: 12/12/2022] Open
Affiliation(s)
- Barbara Strasser
- Medical Faculty, Sigmund Freud Private University, Vienna, Austria
| |
Collapse
|
28
|
Seo DY, Hwang BG. Effects of exercise training on the biochemical pathways associated with sarcopenia. Phys Act Nutr 2020; 24:32-38. [PMID: 33108716 PMCID: PMC7669465 DOI: 10.20463/pan.2020.0019] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 09/23/2020] [Indexed: 12/14/2022] Open
Abstract
[Purpose] Sarcopenia is considered one of the major causes of disability in the elderly population and is highly associated with aging. Exercise is an essential strategy for improving muscle health while aging and involves multiple metabolic and transcriptional adaptations. Although the beneficial effects of exercise modalities on skeletal muscle structure and function in aging are well recognized, the exact cellular and molecular mechanisms underlying the influence of exercise have not been fully elucidated. [Methods] We summarize the biochemical pathways involved in the progression and pathogenesis of sarcopenia and describe the beneficial effects of exercise training on the relevant signaling pathways associated with sarcopenia. [Results] This study briefly introduces current knowledge on the signaling pathways involved in the development of sarcopenia, effects of aerobic exercise on mitochondria-related parameters and mitochondrial function, and role of resistance exercise in the regulation of muscle protein synthesis against sarcopenia. [Conclusion] This review suggested that the beneficial effects of exercise are still under-explored, and accelerated research will help develop better modalities for the prevention, management, and treatment of sarcopenia.
Collapse
Affiliation(s)
- Dae Yun Seo
- Cardiovascular and Metabolic Disease Center, Inje University, Busan, Republic of Korea
| | - Boo Geun Hwang
- Department of Sport Rehabilitation, Tong Myong University, Busan, Republic of Korea
| |
Collapse
|