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Wang Z, Jiang T, Xu H, Wang C, Tang R. Circadian rhythm sleep loss impairs motor inhibition more than motor execution in continuous action. Sci Rep 2024; 14:18668. [PMID: 39134656 PMCID: PMC11319480 DOI: 10.1038/s41598-024-69242-5] [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: 07/13/2023] [Accepted: 08/02/2024] [Indexed: 08/15/2024] Open
Abstract
Under total sleep deprivation, both inhibitory and motor control are impaired. However, how circadian rhythm sleep loss caused by irregular sleep pattern affects motor inhibition and execution in continuous actions remains unknown. This study utilized a pointing task to investigate the question over 30 days. During regular trials, participants were instructed to tap on a specified location, while in countermanding trials, they were required to countermand their current action. Additionally, there was a control group performed the same task following a normal 24-h rhythm. The results indicated that the decrease in accuracy and the increase in movement time in countermanding trials were more prominent in the shift work group. In contrast, there was no significant difference in reaction time between the two groups. Notably, the shift work group outperformed the control group in terms of movement time in regular trials and radial displacement in countermanding trials. Overall, these results show that circadian rhythm sleep loss predominantly affects inhibitory control, rather than motor control, underscoring the nuanced impacts of sleep disruption on differential aspects of cognitive and motor functions.
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Affiliation(s)
- Ziying Wang
- Naval Medical Center of PLA, Naval Medical University, Shanghai, 200433, China
- Key Laboratory of Molecular Neurobiology of Ministry of Education, Naval Medical University, Shanghai, 200433, China
| | - Tingwei Jiang
- School of Social and Behavioral Sciences, Department of Psychology, Nanjing University, Nanjing, 210023, China
| | - Haodan Xu
- Naval Medical Center of PLA, Naval Medical University, Shanghai, 200433, China
- Key Laboratory of Molecular Neurobiology of Ministry of Education, Naval Medical University, Shanghai, 200433, China
| | - Chuan Wang
- Naval Medical Center of PLA, Naval Medical University, Shanghai, 200433, China.
- Key Laboratory of Molecular Neurobiology of Ministry of Education, Naval Medical University, Shanghai, 200433, China.
| | - Rixin Tang
- School of Social and Behavioral Sciences, Department of Psychology, Nanjing University, Nanjing, 210023, China.
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2
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Kelly NR, Guidinger C, Swan DM, Thivel D, Folger A, Luther GM, Hahn ME. A brief bout of moderate intensity physical activity improves preadolescent children's behavioral inhibition but does not change their energy intake. J Behav Med 2024; 47:692-706. [PMID: 38671287 DOI: 10.1007/s10865-024-00495-1] [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: 07/19/2023] [Accepted: 04/17/2024] [Indexed: 04/28/2024]
Abstract
Children in rural communities consume more energy-dense foods relative to their urban peers. Identifying effective interventions for improving energy intake patterns are needed to address these geographic disparities. The primary aim of this study was to harness the benefits of physical activity on children's executive functioning to see if these improvements lead to acute changes in eating behaviors. In a randomized crossover design, 91 preadolescent (8-10y; M age = 9.48 ± 0.85; 50.5% female; 85.7% White, 9.9% Multiracial, 9.9% Hispanic) children (86% rural) completed a 20-minute physical activity condition (moderate intensity walking) and time-matched sedentary condition (reading and/or coloring) ~ 14 days apart. Immediately following each condition, participants completed a behavioral inhibition task and then eating behaviors (total energy intake, relative energy intake, snack intake) were measured during a multi-array buffet test meal. After adjusting for period and order effects, body fat (measured via DXA), and depressive symptoms, participants experienced significant small improvements in their behavioral inhibition following the physical activity versus sedentary condition (p = 0.04, Hedge's g = 0.198). Eating behaviors did not vary by condition, nor did improvements in behavioral inhibition function as a mediator (ps > 0.09). Thus, in preadolescent children, small improvements in behavioral inhibition from physical activity do not produce acute improvements in energy intake. Additional research is needed to clarify whether the duration and/or intensity of physical activity sessions would produce different results in this age group, and whether intervention approaches and corresponding mechanisms of change vary by individual factors, like age and degree of food cue responsivity.
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Affiliation(s)
- Nichole R Kelly
- Counseling Psychology and Human Services, University of Oregon, 1215 University of Oregon, Eugene, OR 97403, USA.
- The Prevention Science Institute, University of Oregon, 6217 University of Oregon, Eugene, OR, USA.
| | - Claire Guidinger
- Counseling Psychology and Human Services, University of Oregon, 1215 University of Oregon, Eugene, OR 97403, USA
- The Prevention Science Institute, University of Oregon, 6217 University of Oregon, Eugene, OR, USA
| | - Daniel M Swan
- The Prevention Science Institute, University of Oregon, 6217 University of Oregon, Eugene, OR, USA
| | - David Thivel
- Laboratory of the Metabolic Adaptations to Exercise under Physiological and Pathological Conditions, Clermont Auvergne University, Clermont-Ferrand, France
| | - Austin Folger
- Counseling Psychology and Human Services, University of Oregon, 1215 University of Oregon, Eugene, OR 97403, USA
- The Prevention Science Institute, University of Oregon, 6217 University of Oregon, Eugene, OR, USA
| | - Gabriella M Luther
- Counseling Psychology and Human Services, University of Oregon, 1215 University of Oregon, Eugene, OR 97403, USA
- The Prevention Science Institute, University of Oregon, 6217 University of Oregon, Eugene, OR, USA
| | - Michael E Hahn
- Human Physiology, University of Oregon, 1240 University of Oregon, Eugene, OR, USA
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3
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Oliveira JH, Santos P, Pezarat-Correia P, Vaz JR. Sleep deprivation increases the regularity of isometric torque fluctuations. Exp Brain Res 2024; 242:1037-1046. [PMID: 38451319 PMCID: PMC11078836 DOI: 10.1007/s00221-024-06810-1] [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: 09/05/2023] [Accepted: 02/18/2024] [Indexed: 03/08/2024]
Abstract
The regularity of the fluctuations present in torque signals represent the adaptability of the motor control. While previous research showed how it is affected by neuromuscular fatigue and ageing, the underlying mechanisms remain unclear. It is currently under debate whether these changes are explained by central or peripheral neuromuscular mechanisms. Here, we experimentally manipulated the sleep of thirteen young adults through a supervised 24 h-sleep deprivation protocol. This study aimed to investigate the effect of sleep deprivation on the regularity of torque fluctuations, and other standard torque-related outcomes (Peak Torque - PT - and Rate of Torque Development - RTD). The participants were asked to perform knee extension maximal voluntary contractions (MVC) and submaximal knee extensions at 40% of MVC for 30 s. PT and RTD were calculated from the MVC and the regularity of the torque fluctuations was determined on the submaximal task through Sample Entropy (SampEn). In addition, rate of perceived effort (RPE) was collected. We found no significant changes in PT and RTD. The regularity of torque fluctuations significantly increased (i.e., a decrease in SampEn) after 24 h-sleep deprivation (PRE = 1.76 ± 0.268, POS24 = 1.71 ± 0.306; p = 0.044). Importantly, we found a negative correlation between RPE and SampEn relative changes after sleep deprivation. This study brings new insights towards the understanding of the underlying mechanisms that explain changes in torque fluctuations, demonstrating that these changes are not limited to neuromuscular processes but are also likely to be affected by other domains, such as psychological profile, which can indirectly affect the neural drive to the muscles.
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Affiliation(s)
- João H Oliveira
- Neuromuscular Research Lab, Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal
- CIPER,Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal
| | - Paulo Santos
- Neuromuscular Research Lab, Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal
- CIPER,Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal
| | - Pedro Pezarat-Correia
- Neuromuscular Research Lab, Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal
- CIPER,Faculty of Human Kinetics, University of Lisbon, Lisbon, Portugal
| | - João R Vaz
- Egas Moniz Center for Interdisciplinary Research (CiiEM), Egas Moniz School of Health & Science, Almada, Portugal.
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Harrington MO, Reeve S, Bower JL, Renoult L. How do the sleep features that characterise depression impact memory? Emerg Top Life Sci 2023; 7:499-512. [PMID: 38054537 PMCID: PMC10754336 DOI: 10.1042/etls20230100] [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: 05/17/2023] [Revised: 11/07/2023] [Accepted: 11/14/2023] [Indexed: 12/07/2023]
Abstract
Depression is associated with general sleep disturbance and abnormalities in sleep physiology. For example, compared with control subjects, depressed patients exhibit lower sleep efficiency, longer rapid eye movement (REM) sleep duration, and diminished slow-wave activity during non-REM sleep. A separate literature indicates that depression is also associated with many distinguishing memory characteristics, including emotional memory bias, overgeneral autobiographical memory, and impaired memory suppression. The sleep and memory features that hallmark depression may both contribute to the onset and maintenance of the disorder. Despite our rapidly growing understanding of the intimate relationship between sleep and memory, our comprehension of how sleep and memory interact in the aetiology of depression remains poor. In this narrative review, we consider how the sleep signatures of depression could contribute to the accompanying memory characteristics.
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Affiliation(s)
| | - Sarah Reeve
- Department of Clinical Psychology and Psychological Therapies, Norwich Medical School, University of East Anglia, Norwich, U.K
| | - Joanne L. Bower
- School of Psychology, University of East Anglia, Norwich, U.K
| | - Louis Renoult
- School of Psychology, University of East Anglia, Norwich, U.K
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5
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Sullivan EC, James E, Henderson LM, McCall C, Cairney SA. The influence of emotion regulation strategies and sleep quality on depression and anxiety. Cortex 2023; 166:286-305. [PMID: 37451185 DOI: 10.1016/j.cortex.2023.06.001] [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: 12/16/2022] [Revised: 05/19/2023] [Accepted: 06/06/2023] [Indexed: 07/18/2023]
Abstract
Chronic stress is a major risk factor for a number of mental health disorders, including depression and pathological anxiety. Adaptive cognitive emotion regulation (CER) strategies (i.e. positively-focused thought processes) can help to prevent psychiatric disturbance when enduring unpleasant and stressful experiences, but little is known about the inter-individual factors that govern their success. Sleep plays an important role in mental health, and may moderate the effectiveness of adaptive CER strategies by maintaining the executive functions on which they rely. In this study, we carried out a secondary analysis of self-reported mental health and sleep data acquired during a protracted and naturally-occurring stressor - the COVID-19 pandemic - to firstly test the hypothesis that adaptive CER strategy use is associated with positive mental health outcomes and secondly, that the benefits of adaptive CER strategy use for mental health are contingent on high-quality sleep. Using established self-report tools, participants estimated their depression (N = 551) and anxiety (N = 590)2 levels, sleep quality and tendency to engage in adaptive and maladaptive CER strategies during the Spring and Autumn of 2020. Using a linear mixed modelling approach, we found that greater use of adaptive CER strategies and higher sleep quality were independently associated with lower self-reported depression and anxiety. However, adaptive CER strategy use was not a significant predictor of self-reported anxiety when accounting for sleep quality in our final model. The positive influence of adaptive CER strategy use on depression was observed at different levels of sleep quality. These findings highlight the importance of adaptive CER strategy use and good sleep quality in promoting resilience to depression and anxiety when experiencing chronic stress.
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Affiliation(s)
- Emma C Sullivan
- Department of Psychology, University of York, York, YO10 5DD, United Kingdom.
| | - Emma James
- Department of Experimental Psychology, University of Oxford, Woodstock Road, Oxford, OX2 6GG, United Kingdom
| | - Lisa-Marie Henderson
- Department of Psychology, University of York, York, YO10 5DD, United Kingdom; York Biomedical Research Institute, University of York, York, YO10 5DD, United Kingdom
| | - Cade McCall
- Department of Psychology, University of York, York, YO10 5DD, United Kingdom
| | - Scott A Cairney
- Department of Psychology, University of York, York, YO10 5DD, United Kingdom; York Biomedical Research Institute, University of York, York, YO10 5DD, United Kingdom
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6
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Magnuson JR, Kang HJ, Debenham MIB, McNeil CJ, Dalton BH. Effects of sleep deprivation on perceived and performance fatigability in females: An exploratory study. Eur J Sport Sci 2023; 23:1922-1931. [PMID: 35989687 DOI: 10.1080/17461391.2022.2115944] [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] [Indexed: 11/03/2022]
Abstract
Sleep deprivation (SD) is prevalent and impairs motor function; however, little is known about its effect on perceived and performance fatigability, especially in females. To examine the effects of 24 h of SD on these attributes of fatigue, nine females completed a 20-min isometric, sustained elbow flexion contraction, followed by 10 min of recovery. The superimposed twitch (SIT) elicited via transcranial magnetic stimulation (TMS) assessed supraspinal drive. Biceps brachii electromyographic data indicated neural excitability in response to stimulation over the motor cortex (motor evoked potential; MEP), corticospinal tract (cervicomedullary motor evoked potential; CMEP), and brachial plexus (maximal M-wave; Mmax). MEPs and CMEPs were recorded during a TMS-induced silent period. At baseline, ratings of perceived effort (RPE; 2.9 vs. 1.6) and fatigue (RPF; 6.9 vs. 2.9), were higher for SD than control. Across the 20-min contraction, RPE increased from 2.2 to 7.6, SIT and MEP/CMEP increased by 284 and 474%, respectively, whereas maximal voluntary isometric contraction (MVC) torque and CMEP/Mmax decreased by 26 and 57%, respectively. No differences were found across conditions for MVC, SIT, Mmax, CMEP/Mmax, or MEP/CMEP prior to, during, and after the fatiguing task. During recovery, RPE (4.9 vs. 3.4), RPF (7.6 vs. 2.8), and perception of task difficulty (5.5 vs. 4.5) were greater for SD than control. Acute SD does not appear to alter performance fatigability development and subsequent recovery; however, it increases perceptions of fatigue, effort, and task difficulty. Thus, the disconnect between perceived and actual neuromuscular capacity following a sustained, submaximal isometric task is exacerbated by SD.HighlightsSleep deprivation did not alter supraspinal drive or neural excitability during and after a 20-min submaximal elbow flexion contractionSleep deprivation increased perceived fatigue and perception of task difficultyThe disconnect between perceived and performance fatigability is exacerbated in a sleep-deprived state.
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Affiliation(s)
- Justine R Magnuson
- School of Health and Exercise Sciences and Centre for Heart, Lung and Vascular Health, The University of British Columbia, Kelowna, Canada
| | - Hogun J Kang
- School of Health and Exercise Sciences and Centre for Heart, Lung and Vascular Health, The University of British Columbia, Kelowna, Canada
| | - Mathew I B Debenham
- School of Health and Exercise Sciences and Centre for Heart, Lung and Vascular Health, The University of British Columbia, Kelowna, Canada
| | - Chris J McNeil
- School of Health and Exercise Sciences and Centre for Heart, Lung and Vascular Health, The University of British Columbia, Kelowna, Canada
| | - Brian H Dalton
- School of Health and Exercise Sciences and Centre for Heart, Lung and Vascular Health, The University of British Columbia, Kelowna, Canada
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7
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Bao C, Wang Y, Le T, Xu L, Tang W, Zou W, Bao Y, Xu D, Zhao K. Relationship between depressive symptoms and sleep quality and cognitive inhibition ability in prenatal pregnant women. BMC Psychiatry 2023; 23:522. [PMID: 37474916 PMCID: PMC10357698 DOI: 10.1186/s12888-023-04976-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 06/22/2023] [Indexed: 07/22/2023] Open
Abstract
BACKGROUND Sleep problems and cognitive changes are typical in pregnant women with depressive symptoms. However, the relationship between sleep quality and executive dysfunction remains unclear. This study aims to explore the differences in sleep quality and cognitive inhibition between pregnant women with and without depressive symptoms in the third trimester of pregnancy and investigate the correlations between sleep quality, cognitive inhibition and depressive symptoms. METHODS In the third trimester, 169 women without depressive symptoms and 88 women with depressive symptoms participated in the study. Edinburgh Postpartum Depression Questionnaire (EPDS) was used to assess depressive symptoms, and Pittsburgh Standard Sleep Quality Index Questionnaire (PSQI) was used to investigate sleep quality. The color-word Stroop task is used to evaluate cognitive inhibition. RESULTS Compared with women without depressive symptoms, pregnant women with depressive symptoms showed worse sleep quality and Stroop task performances (response speed and accuracy). In addition, the speed of cognitive inhibition plays a mediating role in the relationship between sleep quality and prenatal depressive symptoms. CONCLUSION This research emphasizes the importance of sleep quality screening and cognitive training for depression during pregnancy and childbirth in ensuring women's mental health during pregnancy and childbirth.
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Affiliation(s)
- Ciqing Bao
- Wenzhou Seventh People's Hospital, Wenzhou, 325000, China
- The Affiliated Brain Hospital of Nanjing Medical University, Nanjing, 210000, China
| | - Yali Wang
- Wenzhou Seventh People's Hospital, Wenzhou, 325000, China
| | - Tao Le
- School of Mental Health, Wenzhou Medical University , Wenzhou, China
| | - Ling Xu
- Wenzhou Seventh People's Hospital, Wenzhou, 325000, China
| | - Weina Tang
- Shaoxing 7th People's Hospital, Shaoxing, China
| | - Wanyun Zou
- Wenzhou Seventh People's Hospital, Wenzhou, 325000, China
| | - Yin Bao
- Department of Obstetrics, First Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325000, China
| | - Dongwu Xu
- School of Mental Health, Wenzhou Medical University , Wenzhou, China.
| | - Ke Zhao
- Lishui Second People's Hospital Afliated to Wenzhou Medical University, Lishui, 323000, China.
- The Affiliated Kangning Hospital of Wenzhou Medical University Zhejiang Provincial Clinical Research Center For Mental Disorder, Wenzhou, China.
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8
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Peng Z, Hou Y, Xu L, Wang H, Wu S, Song T, Shao Y, Yang Y. Recovery sleep attenuates impairments in working memory following total sleep deprivation. Front Neurosci 2023; 17:1056788. [PMID: 37144096 PMCID: PMC10151529 DOI: 10.3389/fnins.2023.1056788] [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: 09/29/2022] [Accepted: 03/31/2023] [Indexed: 05/06/2023] Open
Abstract
Introduction The detrimental effects of sleep deprivation (SD) on cognitive function and quality of life are well known, and sleep disturbances are a major physical and mental health issue worldwide. Working memory plays an important role in many complex cognitive processes. Therefore, it is necessary to identify strategies that can effectively counteract the negative effects of SD on working memory. Methods In the present study, we utilized event-related potentials (ERPs) to investigate the restorative effects of 8 h of recovery sleep (RS) on working memory impairments induced by total sleep deprivation for 36 h. We analyzed ERP data from 42 healthy male participants who were randomly assigned to two groups. The nocturnal sleep (NS) group completed a 2-back working memory task before and after normal sleep for 8 h. The sleep deprivation (SD) group completed a 2-back working memory task before and after 36 h of total sleep deprivation (TSD) and after 8 h of RS. Electroencephalographic data were recorded during each task. Results The N2 and P3 components-which are related to working memory-exhibited low-amplitude and slow-wave characteristics after 36 h of TSD. Additionally, we observed a significant decrease in N2 latency after 8 h of RS. RS also induced significant increases in the amplitude of the P3 component and in the behavioral indicators. Discussion Overall, 8 h of RS attenuated the decrease in working memory performance caused by 36 h of TSD. However, the effects of RS appear to be limited.
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Affiliation(s)
- Ziyi Peng
- School of Psychology, Beijing Sport University, Beijing, China
| | - Yanhong Hou
- Department of Psychology Medical, The 8th Medical Centre of PLA General Hospital, Beijing, China
| | - Lin Xu
- School of Psychology, Beijing Sport University, Beijing, China
| | - Haiteng Wang
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China
- IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China
| | - Shuqing Wu
- Center of Stress Medicine, East China Institute of Biotechnology, Peking University, Beijing, China
| | - Tao Song
- School of Psychology, Beijing Sport University, Beijing, China
| | - Yongcong Shao
- School of Psychology, Beijing Sport University, Beijing, China
| | - Yan Yang
- Department of Radiology, The 8th Medical Centre of PLA General Hospital, Beijing, China
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Mikulski T, Górecka M, Bogdan A, Młynarczyk M, Ziemba AW. Psychomotor Performance after 30 h of Sleep Deprivation Combined with Exercise. Brain Sci 2023; 13:brainsci13040570. [PMID: 37190535 DOI: 10.3390/brainsci13040570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/23/2023] [Accepted: 03/27/2023] [Indexed: 03/31/2023] Open
Abstract
Sleep deprivation (SD) usually impairs psychomotor performance, but most experiments are usually focused on sedentary conditions. The purpose of this study was to evaluate the influence of 30 h of complete SD combined with prolonged, moderate exercise (SDE) on human psychomotor performance. Eleven endurance-trained men accustomed to overnight exertion were tested twice: in well-slept and non-fatigued conditions (Control) and immediately after 30 h of SDE. They performed a multiple-choice reaction time test (MCRT) at rest and during each workload of the graded exercise test to volitional exhaustion. At rest, the MCRT was shorter after SDE than in the Control (300 ± 13 ms vs. 339 ± 11 ms, respectively, p < 0.05). During graded exercise, there were no significant differences in MCRT between groups, but the fastest reaction was observed at lower workloads after SDE (158 ± 7 W vs. 187 ± 11 W in Control, p < 0.05). The total number of missed reactions tended to be higher after SDE (8.4 ± 0.7 vs. 6.3 ± 0.8 in Control, p = 0.06). In conclusion, SDE is different from SD alone; however, well-trained men, accustomed to overnight exertion can maintain psychomotor abilities independently of the extent of central fatigue. Exercise can be used to enhance psychomotor performance in sleep-deprived subjects in whom special caution is required in order to avoid overload.
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Paillard T. Detrimental effects of sleep deprivation on the regulatory mechanisms of postural balance: a comprehensive review. Front Hum Neurosci 2023; 14:1146550. [PMID: 37124366 PMCID: PMC10133494 DOI: 10.3389/fnhum.2023.1146550] [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: 01/17/2023] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
This review addresses the effects of sleep deprivation on postural balance based on a comprehensive search of articles dealing with this relationship in the electronic databases PubMed, Google Scholar, and ScienceDirect. Evidence suggests that postural balance is sensitive to acute and chronic sleep deprivation for everyone, including young and healthy subjects. Pathologies, aging and the circadian pattern aggravate and/or accentuate the effects of sleep deprivation on postural balance. It turns out that the different systems of information taking, decision making, and motor execution of the postural balance function are negatively affected by sleep deprivation. For example, regarding the information taking system, the sensitivity of visual perception and visuo-spatial performance and the oculomotricity are disrupted and the vestibulo-ocular reflex and the sensory reweighting are altered. Regarding the decision making system, the different brain areas activated for the regulation of postural balance are less active after sleep deprivation and the executive function and perception of verticality are impaired. Regarding the motor execution system, the agonist-antagonist muscle coordination can be modified. However, the different detrimental effects induced for each system of the postural balance function are not yet fully known and deserve further exploration in order to better understand them.
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11
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Li J, Zhou Y, Zhang X, Wang Q, Zhang L. Effects of total sleep deprivation on execution lapses during vigilance tasks. Chronobiol Int 2022; 39:1624-1639. [PMID: 36303419 DOI: 10.1080/07420528.2022.2139185] [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: 01/25/2023]
Abstract
Total sleep deprivation (TSD) results in reduced efficiency of cognitive resources. Moreover, when the available cognitive resources are less than required, individuals exhibit lapses in responsiveness. Accordingly, this study explored the effects of TSD on executive function and the characteristics of execution lapses. Functional near-infrared spectroscopy was used to monitor the prefrontal cortex's functional connections in resting and tasking states for various sleep deprivation durations. Data from participants' attentional performance test and self-reported fatigue were collected over 30 hours of wakefulness. Task performance was compared based on time of day, time on task, and reaction time. The results show that participants' arousal level significantly decreased post 14 hours (P < .05), while sleepiness increased. The prefrontal cortex connection and attentional performance dropped at the Window of Circadian Low (3:00 ~ 6:00). The number of execution lapses was higher during the initiation, inhibition, and fatigue phases and rose markedly post 14 hours of wakefulness. We conclude that maintaining better inhibition control requires a reasonable extension of the reaction time. Moreover, subjective perception is significantly correlated with task performance and right prefrontal connection strength. This study presents the scientific evidence for measures to address consistently long working hours and disrupted circadian rhythms.
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Affiliation(s)
- Jingqiang Li
- Safety Science and Engineering College, Civil Aviation University of China, Tianjin, China
| | - Yanru Zhou
- Safety Science and Engineering College, Civil Aviation University of China, Tianjin, China
| | - Xining Zhang
- Safety Science and Engineering College, Civil Aviation University of China, Tianjin, China
| | - Qingfu Wang
- Safety Science and Engineering College, Civil Aviation University of China, Tianjin, China
| | - Lu Zhang
- Safety Science and Engineering College, Civil Aviation University of China, Tianjin, China
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12
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Passi T, Lukander K, Laarni J, Närväinen J, Rissanen J, Vaara JP, Pihlainen K, Kallinen K, Ojanen T, Mauno S, Pakarinen S. Effects of overnight military training and acute battle stress on the cognitive performance of soldiers in simulated urban combat. Front Psychol 2022; 13:925157. [PMID: 35959037 PMCID: PMC9360769 DOI: 10.3389/fpsyg.2022.925157] [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: 04/21/2022] [Accepted: 06/24/2022] [Indexed: 11/13/2022] Open
Abstract
Understanding the effect of stress, fatigue, and sleep deprivation on the ability to maintain an alert and attentive state in an ecologically valid setting is of importance as lapsing attention can, in many safety-critical professions, have devastating consequences. Here we studied the effect of close-quarters battle (CQ battle) exercise combined with overnight military training with sleep deprivation on cognitive performance, namely sustained attention and response inhibition. In addition, the effect of the CQ battle and overnight training on cardiac activity [heart rate and root mean square of the successive differences (RMSSD)] during the cognitive testing and the relationship between cardiac activity and cognitive performance were examined. Cognitive performance was measured with the psychomotor vigilance task (PVT) and the sustained attention to response task (SART). Altogether 45 conscripts participated in the study. The conscripts were divided into control (CON) and experimental (EXP) groups. The CON completed the training day after a night of sleep and the EXP after the overnight military training with no sleep. Results showed that the effect of the overnight training on cognitive performance and the between-group difference in heart rate (HR) and heart rate variability (HRV) depended on the cognitive test. Surprisingly, the cognitive performance was not largely affected by the CQ battle. However, as expected, the CQ battle resulted in a significant decrease in RMSSD and an increase in HR measured during the cognitive testing. Similarly, the HR parameters were related to cognitive performance, but the relationship was found only with the PVT. In conclusion, fatigue due to the overnight training impaired the ability to maintain sufficient alertness level. However, this impairment in arousal upregulation was counteracted by the arousing nature of the SART. Hence, the conscripts' cognitive performance was mainly preserved when performing a stimulating task, despite the fatigue from the sleep loss of the preceding night and physical activity.
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Affiliation(s)
- Tomi Passi
- Finnish Institute of Occupational Health, Helsinki, Finland
- *Correspondence: Tomi Passi
| | | | - Jari Laarni
- VTT Technical Research Centre of Finland Ltd., Espoo, Finland
| | | | | | - Jani P. Vaara
- Department of Leadership and Military Pedagogy, National Defence University, Helsinki, Finland
| | - Kai Pihlainen
- Training Division, Defence Command, Helsinki, Finland
| | - Kari Kallinen
- Finnish Defence Research Agency, Finnish Defence Forces, Tuusula, Finland
| | - Tommi Ojanen
- Finnish Defence Research Agency, Finnish Defence Forces, Tuusula, Finland
| | - Saija Mauno
- Department of Psychology, Faculty of Social Sciences (Psychology), and University of Jyväskylä, Tampere University, Jyväskylä, Finland
| | - Satu Pakarinen
- Finnish Institute of Occupational Health, Helsinki, Finland
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13
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Magnuson JR, Kang HJ, Dalton BH, McNeil CJ. Neural effects of sleep deprivation on inhibitory control and emotion processing. Behav Brain Res 2022; 426:113845. [PMID: 35304184 DOI: 10.1016/j.bbr.2022.113845] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 02/21/2022] [Accepted: 03/12/2022] [Indexed: 12/26/2022]
Abstract
Sleep deprivation is commonplace and impairs memory, inhibition, cognitive flexibility and attention. However, little is known about the neurophysiological impact of sleep deprivation in the context of go/no-go (GNG) task performance and emotion processing. To address this knowledge gap, 12 females performed two computerized GNG tasks (shapes; emotional facial expressions) and an object hit and avoid (OHA) task after a night of typical sleep and 24hours without sleep. Electroencephalographic (EEG) recordings were taken during a 3-minute eyes-open resting period as well as during GNG task performance. Resting EEG power in the theta band was 33% higher for the sleep-deprived than control condition (p < 0.05), whereas alpha activity was unchanged. When sleep deprived, participants had ~6% slower response times (go trials) and made ~7% more total errors during GNG tasks (p < 0.05). Reaction time and overall accuracy were ~25% and ~9% worse for the emotional compared to shape GNG task (p < 0.05), respectively, which suggests interference of emotion processing on task performance. Smaller differences in amplitude between go and no-go trials for the N2 and both the N2 and P3 event-related potential components were found during sleep deprivation for the emotional and shape GNG tasks, respectively (p < 0.05). No changes to the N170 component were found. Lastly, participants hit more distractors during the OHA when sleep deprived (p < 0.05). Altogether, these results indicate sleep deprivation slows neural processing and impairs inhibitory task performance, possibly due to a more bottom-up, stimulus-driven approach to inhibiting motor responses.
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Affiliation(s)
- Justine R Magnuson
- School of Health and Exercise Sciences and Centre for Heart, Lung and Vascular Health, The University of British Columbia, Kelowna, BC, Canada
| | - Hogun J Kang
- School of Health and Exercise Sciences and Centre for Heart, Lung and Vascular Health, The University of British Columbia, Kelowna, BC, Canada
| | - Brian H Dalton
- School of Health and Exercise Sciences and Centre for Heart, Lung and Vascular Health, The University of British Columbia, Kelowna, BC, Canada
| | - Chris J McNeil
- School of Health and Exercise Sciences and Centre for Heart, Lung and Vascular Health, The University of British Columbia, Kelowna, BC, Canada.
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14
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Craven J, McCartney D, Desbrow B, Sabapathy S, Bellinger P, Roberts L, Irwin C. Effects of Acute Sleep Loss on Physical Performance: A Systematic and Meta-Analytical Review. Sports Med 2022; 52:2669-2690. [PMID: 35708888 PMCID: PMC9584849 DOI: 10.1007/s40279-022-01706-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2022] [Indexed: 02/01/2023]
Abstract
BACKGROUND Sleep loss may influence subsequent physical performance. Quantifying the impact of sleep loss on physical performance is critical for individuals involved in athletic pursuits. DESIGN Systematic review and meta-analysis. SEARCH AND INCLUSION Studies were identified via the Web of Science, Scopus, and PsycINFO online databases. Investigations measuring exercise performance under 'control' (i.e., normal sleep, > 6 h in any 24 h period) and 'intervention' (i.e., sleep loss, ≤ 6 h sleep in any 24 h period) conditions were included. Performance tasks were classified into different exercise categories (anaerobic power, speed/power endurance, high-intensity interval exercise (HIIE), strength, endurance, strength-endurance, and skill). Multi-level random-effects meta-analyses and meta-regression analyses were conducted, including subgroup analyses to explore the influence of sleep-loss protocol (e.g., deprivation, restriction, early [delayed sleep onset] and late restriction [earlier than normal waking]), time of day the exercise task was performed (AM vs. PM) and body limb strength (upper vs. lower body). RESULTS Overall, 227 outcome measures (anaerobic power: n = 58; speed/power endurance: n = 32; HIIE: n = 27; strength: n = 66; endurance: n = 22; strength-endurance: n = 9; skill: n = 13) derived from 69 publications were included. Results indicated a negative impact of sleep loss on the percentage change (%Δ) in exercise performance (n = 959 [89%] male; mean %Δ = - 7.56%, 95% CI - 11.9 to - 3.13, p = 0.001, I2 = 98.1%). Effects were significant for all exercise categories. Subgroup analyses indicated that the pattern of sleep loss (i.e., deprivation, early and late restriction) preceding exercise is an important factor, with consistent negative effects only observed with deprivation and late-restriction protocols. A significant positive relationship was observed between time awake prior to the exercise task and %Δ in performance for both deprivation and late-restriction protocols (~ 0.4% decrease for every hour awake prior to exercise). The negative effects of sleep loss on different exercise tasks performed in the PM were consistent, while tasks performed in the AM were largely unaffected. CONCLUSIONS Sleep loss appears to have a negative impact on exercise performance. If sleep loss is anticipated and unavoidable, individuals should avoid situations that lead to experiencing deprivation or late restriction, and prioritise morning exercise in an effort to maintain performance.
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Affiliation(s)
- Jonathan Craven
- School of Health Sciences and Social Work, Griffith University, Southport, QLD 4222 Australia ,Queensland Academy of Sport, Nathan, QLD Australia
| | - Danielle McCartney
- School of Psychology, Faculty of Science, University of Sydney, Sydney, NSW Australia
| | - Ben Desbrow
- School of Health Sciences and Social Work, Griffith University, Southport, QLD 4222 Australia
| | - Surendran Sabapathy
- School of Health Sciences and Social Work, Griffith University, Southport, QLD 4222 Australia
| | - Phillip Bellinger
- School of Health Sciences and Social Work, Griffith University, Southport, QLD 4222 Australia ,Griffith Sports Science, Griffith University, Gold Coast, QLD Australia
| | - Llion Roberts
- School of Health Sciences and Social Work, Griffith University, Southport, QLD 4222 Australia ,Griffith Sports Science, Griffith University, Gold Coast, QLD Australia ,School of Human Movement and Nutrition Sciences, University of Queensland, Brisbane, QLD Australia
| | - Christopher Irwin
- School of Health Sciences and Social Work, Griffith University, Southport, QLD 4222 Australia
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15
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Lee S. Naturally Occurring Consecutive Sleep Loss and Day-to-Day Trajectories of Affective and Physical Well-Being. Ann Behav Med 2021; 56:393-404. [PMID: 34223608 DOI: 10.1093/abm/kaab055] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Experimental studies have shown that just 1 night of sleep loss impairs next-day performance, mood, and energy. Yet, little is known about the effects of consecutive sleep loss on daily well-being in participants' own settings. PURPOSE This study examined whether and how naturally occurring consecutive sleep loss is associated with day-to-day trajectories of affective and physical well-being. METHODS Participants were adults (N = 1,958) from the Midlife in the United States Study who provided daily diary data for eight consecutive days. Consecutive sleep loss was operationalized as the within-person number of consecutive nights with <6 hr of sleep. Multilevel models evaluated the linear, quadratic, and cubic effects of consecutive sleep loss on daily well-being, after controlling for sociodemographic, health, and daily covariates. RESULTS Daily negative affect increased and positive affect decreased in curvilinear fashion as the number of consecutive sleep loss increased. For example, daily negative affect increased (linear), but the rate of increase decelerated as the number of consecutive sleep loss increased (quadratic). Results were consistent for the number and severity of physical symptoms. For negative affect and the severity of physical symptoms, cubic effect was also significant such that the rate of increase accelerated again in the days most distal to baseline (no sleep loss). CONCLUSIONS Consecutive sleep loss was associated with degraded trajectories of daily affective and physical well-being. Making efforts to break the vicious cycle of sleep loss may protect daily well-being in adults whose sleep time is often compromised.
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Affiliation(s)
- Soomi Lee
- School of Aging Studies, University of South Florida, Tampa, FL, USA
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16
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Contributions of animal models of cognitive disorders to neuropsychopharmacology. Therapie 2021; 76:87-99. [PMID: 33589315 DOI: 10.1016/j.therap.2021.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 01/30/2021] [Indexed: 12/18/2022]
Abstract
Cognitive disorders and symptoms are key features of many mental and neurological diseases, with a large spectrum of impaired domains. Because of their possible evolution and detrimental functioning impact, they are a major pharmacological target for both symptomatic and disease-modifier drugs, while few cognitive enhancers have been marketed with an insufficient efficiency. It explains the need to model these cognitive disorders beyond the modelization of mental or neurological diseases themselves. According to the experimental strategy used to induce cognitive impairment, three categories of models have been identified: neurotransmission-driven models; pathophysiology-driven models; environment-driven models. These three categories of models reflect different levels of integration of endogenous and exogenous mechanisms underlying cognitive disorders in humans. Their comprehensive knowledge and illustration of their pharmacological modulation could help to propose a renewing strategy of drug development in central nervous system (CNS) field at a time when the academic and industrial invest seems to be declining despite the medical and social burden of brain diseases.
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17
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Skurvydas A, Kazlauskaite D, Zlibinaite L, Cekanauskaite A, Valanciene D, Karanauskiene D, Zuoziene IJ, Majauskiene D, Mickeviciene D, Satas A. Effects of two nights of sleep deprivation on executive function and central and peripheral fatigue during maximal voluntary contraction lasting 60s. Physiol Behav 2021; 229:113226. [PMID: 33122092 DOI: 10.1016/j.physbeh.2020.113226] [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] [Received: 08/05/2020] [Revised: 10/22/2020] [Accepted: 10/24/2020] [Indexed: 10/23/2022]
Abstract
PURPOSEː: The current study aimed at assessing the effect of a trial of two nights of sleep deprivation (SDT) on mood, sleepiness, motivation and cognitive and motor performance. METHODSː: Thirty-six healthy young and physically active adult men (17 in the control group and 19 in the SDT group) completed a 48-h control or 48-h SDT. For the SDT, participants did not sleep for 48 h. Executive function (attention and inhibitory control) in the Go/No-Go and Stroop tests, mood, sleepiness, motivation, heart rate variability (HRV), motor performance in a hand grip strength test, and 60-s maximal isometric contraction (MVC-60 s) of knee extension were evaluated at 9-11 am on consecutive days 1, 2, and 3. RESULTS: One night of sleep deprivation increased sleepiness, decreased mood, motivation and motor endurance but did not affect executive function (as measured in the Stroop and Go/No-Go tests), the MVC for hand and leg knee extensor muscles, and peripheral motor fatigue in the leg MVC-60 s task. However, the central activation ratio (CAR) decreased significantly during the MVC-60 s. The SDT significantly contributed to the decrease in these functions. That is, the SDT reduced executive function (increased reaction time during Go/No-Go test), MVC of knee extension, and the CAR before and after the MVC-60 s. By contrast, the SDT did not increase CAR immediately after the MVC-60 s and did not decrease the rate of torque development (RTD). CONCLUSIONSː: The SDT significantly impaired mood, motivation and increased sleepiness and HRV, reduced MVC of knee extensor muscles (but not RTD) and motor performance during the MVC-60 s and worsened executive function (attention and inhibitory control) only during the Go/No-Go task. However, the SDT did not reduce hand grip strength and CAR immediately after the MVC-60 s of knee extensor muscles.
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Affiliation(s)
- Albertas Skurvydas
- Department of Rehabilitation, Physical and Sports Medicine, Faculty of Medicine, Vilnius University, M. K. Čiurlionio str. 21/27, LT-03101, Vilnius, Lithuania; Education Academy, Vytautas Magnus University, Jonavos str. 66 - 310, 44191 Kaunas, Lithuania
| | - Diana Kazlauskaite
- Institute of Sport Science and Innovations, Lithuanian Sports University, Sporto str. 6, 44221 Kaunas, Lithuania
| | - Laura Zlibinaite
- Department of Applied Biology and Rehabilitation, Lithuanian Sports University, Sporto str. 6, 44221 Kaunas, Lithuania
| | - Agne Cekanauskaite
- Department of Applied Biology and Rehabilitation, Lithuanian Sports University, Sporto str. 6, 44221 Kaunas, Lithuania
| | - Dovile Valanciene
- Institute of Sport Science and Innovations, Lithuanian Sports University, Sporto str. 6, 44221 Kaunas, Lithuania.
| | - Diana Karanauskiene
- Department of Health, Physical and Social Education, Lithuanian Sports University, Sporto str. 6, 44221 Kaunas, Lithuania
| | - Ilona Judita Zuoziene
- Department of Coaching Science, Lithuanian Sports University, Sporto str. 6, 44221 Kaunas, Lithuania
| | - Daiva Majauskiene
- Department of Health, Physical and Social Education, Lithuanian Sports University, Sporto str. 6, 44221 Kaunas, Lithuania
| | - Dalia Mickeviciene
- Department of Applied Biology and Rehabilitation, Lithuanian Sports University, Sporto str. 6, 44221 Kaunas, Lithuania
| | - Andrius Satas
- Institute of Sport Science and Innovations, Lithuanian Sports University, Sporto str. 6, 44221 Kaunas, Lithuania
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18
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Ibrahim NA, Badour MI, Stone RM, Shepley BR. The enigma of cerebral blood flow and cognition. J Physiol 2021; 599:1739-1741. [PMID: 33442911 DOI: 10.1113/jp281175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 01/04/2021] [Indexed: 11/08/2022] Open
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19
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Meigal AY, Tretjakova OG, Gerasimova-Meigal LI, Sayenko IV. Program of Seven 45-min Dry Immersion Sessions Improves Choice Reaction Time in Parkinson's Disease. Front Physiol 2021; 11:621198. [PMID: 33519524 PMCID: PMC7841462 DOI: 10.3389/fphys.2020.621198] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 12/11/2020] [Indexed: 01/26/2023] Open
Abstract
The study hypothesis held that in subjects with Parkinson's disease (PD), the reaction time (RT) tests of the higher cognition demand would have more readily improved under the program of analog microgravity (μG) modeled with "dry" immersion (DI). To test this hypothesis, 10 subjects with PD have passed through a program of seven DI sessions (each 45 min long) within 25-30 days, with overall μG dose 5 1/4 h. Five patients were enrolled as controls, without DI (noDI group). Simple RT (SRT), disjunctive RT (DRT), and choice RT (CRT) were assessed in four study points: before the DI program (preDI), 1 day after the DI program (postDI), 2 weeks after the DI program (DI2w), and 2 months after the DI program (DI2m). The motor time (MT) was assessed with the tapping test (TT). Additionally, signal detection time (SDT) and central processing time (CPT) were extracted from the data. Before the program of DI, the RT tests are in accordance with their cognition load: SRT (284 ± 37 ms), DRT (338 ± 38 ms), and CRT (540 ± 156 ms). In accordance with the hypothesis, CRT and DRT have improved under DI by, respectively, 20 and 8% at the study point "DI2w," whereas SRT, SDT, and MT did not change (<5% in the preDI point, p > 0.05). Thus, the program of DI provoked RT improvement specifically in the cognitively loaded tasks, in a "dose of cognition-reaction" manner. The accuracy of reaction has changed in none of the RT tests. The neurophysiologic, hormonal/neuroendocrine, behavioral, neural plasticity, and acclimation mechanisms may have contributed to such a result.
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Affiliation(s)
- Alexander Yu. Meigal
- Laboratory of Novel Methods in Physiology, Institute of Higher Biomedical Technologies, Petrozavodsk State University, Petrozavodsk, Russia
| | - Olesya G. Tretjakova
- Laboratory of Novel Methods in Physiology, Institute of Higher Biomedical Technologies, Petrozavodsk State University, Petrozavodsk, Russia
| | - Liudmila I. Gerasimova-Meigal
- Laboratory of Novel Methods in Physiology, Institute of Higher Biomedical Technologies, Petrozavodsk State University, Petrozavodsk, Russia
| | - Irina V. Sayenko
- State Scientific Center, “Institute of Biomedical Problems,” Russian Academy of Sciences, Moscow, Russia
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20
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Peng Z, Dai C, Cai X, Zeng L, Li J, Xie S, Wang H, Yang T, Shao Y, Wang Y. Total Sleep Deprivation Impairs Lateralization of Spatial Working Memory in Young Men. Front Neurosci 2020; 14:562035. [PMID: 33122988 PMCID: PMC7573126 DOI: 10.3389/fnins.2020.562035] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/10/2020] [Indexed: 11/23/2022] Open
Abstract
Total sleep deprivation (TSD) negatively affects cognitive function. Previous research has focused on individual variation in cognitive function following TSD, but we know less about how TSD influences the lateralization of spatial working memory. This study used event-related-potential techniques to explore asymmetry in spatial-working-memory impairment. Fourteen healthy male participants performed a two-back task with electroencephalogram (EEG) recordings conducted at baseline and after 36 h of TSD. We selected 12 EEG points corresponding to left and right sides of the brain and then observed changes in N2 and P3 components related to spatial working memory. Before TSD, P3 amplitude differed significantly between the left and right sides of the brain. This difference disappeared after TSD. Compared with baseline, P3 amplitude decreased for a duration as extended as the prolonged latency of N2 components. After 36 h of TSD, P3 amplitude decreased more in the right hemisphere than the left. We therefore conclude that TSD negatively affected spatial working memory, possibly through removing the right hemisphere advantage.
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Affiliation(s)
- Ziyi Peng
- School of Psychology, Beijing Sport University, Beijing, China
| | - Cimin Dai
- School of Psychology, Beijing Sport University, Beijing, China
| | - Xiaoping Cai
- Department of Cadra Word 3 Division, PLA Army General Hospital, Beijing, China
| | - Lingjing Zeng
- School of Psychology, Beijing Sport University, Beijing, China
| | - Jialu Li
- School of Psychology, Beijing Sport University, Beijing, China
| | - Songyue Xie
- School of Psychology, Beijing Sport University, Beijing, China
| | - Haiteng Wang
- School of Psychology, Beijing Sport University, Beijing, China
| | - Tianyi Yang
- School of Psychology, Beijing Sport University, Beijing, China
| | - Yongcong Shao
- School of Psychology, Beijing Sport University, Beijing, China.,Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Yi Wang
- China Institute of Sports and Health Science, Beijing Sport University, Beijing, China.,State Key Lab of Space Medicine Fundamentals and Application, China Astronaut Research and Training Centre, Beijing, China
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21
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Cè E, Doria C, Roveda E, Montaruli A, Galasso L, Castelli L, Mulè A, Longo S, Coratella G, D'Aloia P, Banfi G, Esposito F. Reduced Neuromuscular Performance in Night Shift Orthopedic Nurses: New Insights From a Combined Electromyographic and Force Signals Approach. Front Physiol 2020; 11:693. [PMID: 32695018 PMCID: PMC7338557 DOI: 10.3389/fphys.2020.00693] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 05/27/2020] [Indexed: 12/20/2022] Open
Abstract
The effect of sleep–wake rhythm disruption on neuromuscular control and muscle fatigue has received little attention. Because nurse shift work is so varied, including overnight duty, rotating shift schedules, early awakening, and interrupted nocturnal sleep, it offers an interesting model to study this paradigm. It has been investigated so far using only subjective markers. A combined approach based on the simultaneous analysis of surface electromyographic (sEMG) and force signals can objectively detect possible deficits in neuromuscular control and muscle fatigue. With this study we investigated neuromuscular activation and muscle contraction capacity at submaximum and maximum level in nurses working two night-shift schedules and compared them to levels in nurses working entirely in day shifts. Sleep quality and activity levels were also assessed. The study sample was 71 nurses grouped by their shift work schedule: night shift for 5 days (NS5, n = 46), night shift for 10 days (NS10, n = 9), and only day/swing shift (DS, n = 16). Before and after the shift-work cycle, maximum voluntary contraction (MVC) force and muscle activation, neuromuscular control, and muscle fatigability were measured in the finger flexor muscles. Activity level and sleep quality during the shift-work cycle were recorded with a wrist actigraph. After the shift-work cycles, MVC force and muscle activation were decreased (−11 ± 3% and −33 ± 3%, p < 0.001) as was neuromuscular control (−36 ± 8%, p = 0.007), whereas muscle fatigability was increased (+ 19 ± 9%, p = 0.006) in the NS5 and the NS10 group. Sleep quality was lower in the NS5 and the NS10 group (−8 ± 1.8% and −15%3, respectively, p < 0.001), while the activity level for the three groups was similar. There was a clear reduction in neuromuscular control and an increase in muscle fatigue in the nurses working the night shift. These findings may inform of work schedule planning or recommendations for devising new recovery strategies to counteract neuromuscular alterations in night shift nurses.
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Affiliation(s)
- Emiliano Cè
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy.,IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Christian Doria
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
| | - Eliana Roveda
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy.,IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Angela Montaruli
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy.,IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
| | - Letizia Galasso
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
| | - Lucia Castelli
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
| | - Antonino Mulè
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
| | - Stefano Longo
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
| | - Giuseppe Coratella
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy
| | | | | | - Fabio Esposito
- Department of Biomedical Sciences for Health, Università Degli Studi di Milano, Milan, Italy.,IRCCS Istituto Ortopedico Galeazzi, Milan, Italy
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