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Jallouli S, Ghroubi S, Dhia IB, Yahia A, Elleuch MH, Sakka S, Mhiri C, Hammouda O. Effect of melatonin intake on postural balance, functional mobility and fall risk in persons with multiple sclerosis: a pilot study. Int J Neurosci 2024; 134:137-147. [PMID: 35708140 DOI: 10.1080/00207454.2022.2090353] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 06/03/2022] [Indexed: 10/18/2022]
Abstract
AIM To assess the safety and the effect of a nocturnal melatonin (MEL) ingestion on postural balance, functional mobility and fall risk the following morning in adults with multiple sclerosis (MS). METHODS Fourteen adults with relapsing-remitting MS (RR-MS) (28.36 ± 6.81 years) were evaluated before and after nocturnal ingestion of MEL (6 mg) or placebo (PLA). Evaluations included a posturographic test of static bipedal postural balance with dual-task in eyes open (EO) and eyes closed conditions, and a clinical test of unipedal balance. The physical performance tests were: Timed Up and Go test (TUGT) (mobility), Four Square Step Test (FSST) (fall risk), and Timed 25-foot walk test (T25FWT) (walking speed). Cognitive performance [Montreal Cognitive Assessment (MoCA) and Simple Reaction Time (SRT) tests] and sleep quality [Spiegel's sleep questionnaire (SSQ)] were also assessed. RESULTS In EO condition, MEL decreased the posturographic parameters [center of pressure (CoP) sway area (CoPAr), CoP path length (CoPL) and CoPL in the mediolateral axis (CoPLX)] more than PLA by 15.82% (p = 0.0006), 12.48% (p = 0.0004) and 14.25% (p = 0.0002), respectively. Durations of TUGT and FSST decreased following MEL session more than the PLA one by 14.52% (p = 0.017) and 19.85% (p = 0.0006), respectively. MEL increased the unipedal stance time, SSQ and MoCA scores more than PLA by 49.81% (p = 0.04), 32.21% (p = 0.004) and 11.87% (p = 0.008), respectively. CONCLUSION This pilot study showed that acute nocturnal MEL ingestion seems to be safe for enhancing postural balance, fun mobility and fall risk in RR-MS adults probably through improving sleep quality and cognitive function.
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Affiliation(s)
- Sonda Jallouli
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Sameh Ghroubi
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
- Department of Physical Medicine and Functional Rehabilitation, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Imen Ben Dhia
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
- High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Abdelmoneem Yahia
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
- Department of Physical Medicine and Functional Rehabilitation, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Mohamed Habib Elleuch
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
- Department of Physical Medicine and Functional Rehabilitation, Habib Bourguiba University Hospital, Sfax, Tunisia
| | - Salma Sakka
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR12SP19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Chokri Mhiri
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR12SP19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Omar Hammouda
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), Paris Nanterre University, Nanterre, France
- Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Sfax, Tunisia
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Jallouli S, Ghroubi S, Sakka S, Ben Dhia I, Damak M, Yahia A, Driss T, Mhiri C, Elleuch MH, Hammouda O. Effects of a nighttime melatonin ingestion on dynamic postural balance and muscle strength the following morning in people living with multiple sclerosis: A preliminary study. Clin Neurol Neurosurg 2024; 238:108165. [PMID: 38428060 DOI: 10.1016/j.clineuro.2024.108165] [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: 04/24/2023] [Revised: 02/02/2024] [Accepted: 02/05/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Decreased endogenous melatonin concentrations in people with multiple sclerosis (PwMS) are associated with fatigue and pain that impair postural balance and muscle strength. Melatonin ingestion had analgesic and anti-fatigue effects. However, the acute effect of exogenous melatonin on dynamic postural stability and muscle strength has not been studied yet in PwMS. This study aimed to investigate the safety and the efficacy of a nighttime melatonin intake on dynamic postural balance and lower-extremity muscle strength the following morning in PwMS. METHODS Fourteen PwMS (28.36 ± 6.81 years) were assessed (8 a.m.) pre- and post-acute intake of melatonin or placebo (6mg, 30 minutes before nocturnal bedtime). Evaluated parameters included dynamic postural balance (force platform), lower-extremity muscle strength [Five-Repetition Sit-To-Stand Test (5-STST)], hand dexterity (Nine-Hole Peg Test), nociceptive pain [Visual Analogue Scale (VAS)], neuropathic pain [Neuropathic Pain 4 Questions (DN4)], sleep quality and fatigue perception [Hooper Index (HI)]. RESULTS In the frontal plane, melatonin reduced the center of pressure (CoP) path length (CoPL), CoPL in the anteroposterior axis (CoPLY) and CoP sway area (CoPAr) compared with placebo by 7.56% (p=0.02, Cohens'd (d)=1.24), 19.27% (p<0.001, d=2.60) and 13.82% (p<0.001, d=2.02), respectively. Melatonin induced a higher decrease in these posturographic parameters compared with placebo in the sagittal plane [CoPL: 9.10% (p=0.005, d=1.02), CoPLY: 4.29% (p=0.025, d=1.07) and CoPAr: 7.45% (p=0.038, d=0.74)]. Melatonin decreased 5-STST duration as well as VAS, DN4, HI-fatigue and HI-sleep scores compared with placebo by 8.19% (p=0.008, d=1.19), 5.74% (p=0.04, d=0.82), 27.30% (p=0.023, d=0.98), 40.15% (p=0.044, d=0.85) and 30.16% (p=0.012, d=1.10), respectively. CONCLUSION This preliminary study, among PwMS, showed that acute melatonin ingestion was safe and efficient for improving dynamic postural stability and lower-extremity muscle strength probably through its analgesic and anti-fatigue effects.
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Affiliation(s)
- Sonda Jallouli
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Tunisia; High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia.
| | - Sameh Ghroubi
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Tunisia
| | - Salma Sakka
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease, LR12SP19, Habib Bourguiba University Hospital, University of Sfax, Tunisia
| | - Imen Ben Dhia
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Tunisia; High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
| | - Mariem Damak
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease, LR12SP19, Habib Bourguiba University Hospital, University of Sfax, Tunisia
| | - Abdelmoneem Yahia
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Tunisia
| | - Tarak Driss
- LINP2, UFR STAPS, University of Paris Nanterre, Nanterre, France
| | - Chokri Mhiri
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease, LR12SP19, Habib Bourguiba University Hospital, University of Sfax, Tunisia
| | - Mohamed Habib Elleuch
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Tunisia
| | - Omar Hammouda
- LINP2, UFR STAPS, University of Paris Nanterre, Nanterre, France; Research Laboratory, Molecular bases of Human Pathology, LR19ES13, Faculty of Medicine of Sfax, University of Sfax, Tunisia
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Ouergui I, Delleli S, Chtourou H, Selmi O, Bouassida A, Bouhlel E, Franchini E. Diurnal Variation of Specific Tests' Performance and Related Psychological Aspects in Young Judo Athletes. RESEARCH QUARTERLY FOR EXERCISE AND SPORT 2023; 94:687-697. [PMID: 35499504 DOI: 10.1080/02701367.2022.2043547] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 02/08/2022] [Indexed: 06/14/2023]
Abstract
Purpose: This study investigated the effects of time-of-day on judo athletes' performances and the associated psychological variables and perceived exertion following judo-specific tests. Methods: Twelve male judo athletes (age: 16 ± 1 years) performed in a randomized and counterbalanced order the special judo fitness test (SJFT), the judo physical fitness test (JPFT), the dynamic and isometric judogi chin-up tests in the morning (8:00 a.m), midday (12:00 p.m), and afternoon (5:00 p.m). Oral temperature and psychological variables [profile of mood state (POMS), Hooper questionnaire, total quality of recovery (TQR)] were assessed before and after the tests, and ratings of perceived exertion (RPE) and the physical activity enjoyment scale (PACES) were assessed only after the tests. Results: RPE score was higher in the morning compared to the afternoon after the JPFT (d = 0.38, p = .045). PACES after JPFT was higher in the morning compared to midday (d = 0.85, p < .001). The isometric and dynamic performances during chin-up tests were higher in the afternoon compared to the morning (d = 0.38, p = .048 and 0.047, respectively). Also, oral temperature was higher in the afternoon compared to the morning (d = 0.41, p = .050) and the midday (p = .047) for dynamic test, while TQR, well-being indices, and POMS did not differ according to time-of-day (p > .05). Conclusions: These results suggest that dynamic and isometric judo chin-up tests are time-of-day dependent with higher performance recorded in the afternoon than in the morning. However, performances in the JPFT and SJFT were not time-of-day dependent.
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Affiliation(s)
| | | | - Hamdi Chtourou
- Université de Sfax
- Observatoire National du Sport, Tunisie
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Jallouli S, Ben Dhia I, Sakka S, Mhiri C, Yahia A, Elleuch MH, Hammouda O, Ghroubi S. Combined effect of gender differences and fatiguing task on postural balance, functional mobility and fall risk in adults with multiple sclerosis: A preliminary study. Neurol Res 2022; 44:1074-1085. [PMID: 36074940 DOI: 10.1080/01616412.2022.2112370] [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: 12/13/2022]
Abstract
AIM To investigate the gender difference effect on postural balance, functional mobility, and fall risk after performing a fatiguing task in adults with multiple sclerosis (MS). METHODS Eleven women (30.91 ± 8.19 years) and seven men (30.29 ± 7.99 years) with relapsing-remitting MS performed a fatiguing task: three sets of the Five-repetition Sit-To-Stand Test (5-STST) were performed before and after the six-minute WalkTest (6MWT). Bipedal postural balance in eyes open and eyes closed conditions were assessed prefatigue (T0) and postfatigue (T3) using a force platform. Unipedal balance, functional mobility (Timed Up and Go Test), fall risk (Four Square Step Test) and fatigue [Visual Analogue Scale of Fatigue (VASF)] were assessed at T0 and T3. Heart rate (HR) and Rating of Perceived Exertion (RPE) were recorded before (only for HR), during and after the fatiguing task. RESULTS Compared to women, men showed an impairment of posturographic parameters [mean center of pressure (CoP) velocity (CoPVm) in both conditions (p < 0.05); CoP sway area (CoPAr) in both conditions (p < 0.01)], unipedal balance on the dominant leg (p <0.001), mobility (p<0.001) and an increased fall risk (p < 0.05). No gender differences were observed in 6MWT, 5-STST, HR, RPE, and VASF. CONCLUSION This preliminary study showed that fatiguing task negatively affected postural control, mobility and fall risk only in men. These gender differences were inconclusive but could be taken into account in postural balance rehabilitation programs for MS persons.
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Affiliation(s)
- Sonda Jallouli
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia.,Research Laboratory Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
| | - Imen Ben Dhia
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia.,Research Laboratory Education, Motricité, Sport et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Tunisia
| | - Salma Sakka
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR12SP19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Chokri Mhiri
- Laboratory of Neurogenetics, Parkinson's Disease and Cerebrovascular Disease (LR12SP19), Habib Bourguiba University Hospital, University of Sfax, Sfax, Tunisia
| | - Abdelmoneem Yahia
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Mohamed Habib Elleuch
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Omar Hammouda
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UFR STAPS, UPL, Paris Nanterre University, Nanterre, France.,Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Sameh Ghroubi
- Research laboratory: Evaluation and Management of Musculoskeletal System Pathologies, LR20ES09, Faculty of Medicine, University of Sfax, Sfax, Tunisia
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Meyrel M, Scott J, Etain B. Chronotypes and circadian rest-activity rhythms in bipolar disorders: a meta-analysis of self- and observer rating scales. Bipolar Disord 2022; 24:286-297. [PMID: 34486201 DOI: 10.1111/bdi.13122] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 07/13/2021] [Accepted: 08/28/2021] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Chronobiological models postulate that abnormalities in circadian rest/activity rhythms (CRAR) are core phenomena of bipolar disorders (BDs). We undertook a meta-analysis of published studies to determine whether self- or observer ratings of CRAR differentiate BD cases from comparators (typically healthy controls [HCs]). METHOD We undertook systematic searches of four databases to identify studies for inclusion in random effects meta-analyses and meta-regression analyses. Effect sizes (ES) for pooled analyses of self- and observer ratings were expressed as standardized mean differences with 95% confidence intervals (CIs). RESULTS The 30 studies meeting eligibility criteria included 2840 cases and 3573 controls. Compared with HC, BD cases showed greater eveningness (ES: 0.33; 95% CI: 0.12-0.54), lower flexibility of rhythms (ES: 0.36; 95% CI: 0.06-0.67), lower amplitude of rhythms (ES: 0.55; 95% CI: 0.39-0.70) and more disturbances across a range of CRAR (ES of 0.78-1.12 for general and social activities, sleep and eating patterns). Between study heterogeneity was high (I2 > 70%) and evidence indicated a potential publication bias for studies using the Biological Rhythms Interview of Assessment in Neuropsychiatry. Meta-regression analyses suggested significantly larger ES were observed in studies using observer ratings or including BD cases with higher levels of depressive symptoms. CONCLUSION This meta-analysis demonstrates that BD is associated with higher levels of self- or observer-rated CRAR disturbances compared with controls. However, further studies should examine the respective performance of individual instruments when used alone or in combination, to clarify their applicability and utility in clinical practice.
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Affiliation(s)
- Manon Meyrel
- Université de Paris, Paris, France.,Département de Psychiatrie et de Médecine Addictologique, APHP.Nord, DMU Neurosciences, GHU Lariboisière - Saint Louis - Fernand Widal, Paris, France
| | - Jan Scott
- Université de Paris, Paris, France.,Département de Psychiatrie et de Médecine Addictologique, APHP.Nord, DMU Neurosciences, GHU Lariboisière - Saint Louis - Fernand Widal, Paris, France.,Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Bruno Etain
- Université de Paris, Paris, France.,Département de Psychiatrie et de Médecine Addictologique, APHP.Nord, DMU Neurosciences, GHU Lariboisière - Saint Louis - Fernand Widal, Paris, France.,INSERM UMRS-1144, Université de Paris, Paris, France
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Putilov AA, Budkevich EV, Tinkova EL, Dyakovich MP, Sveshnikov DS, Donskaya OG, Budkevich RO. A six-factor structure of individual variation in the tendencies to become sleepy and to sleep at different times of the day. Acta Psychol (Amst) 2021; 217:103327. [PMID: 33984572 DOI: 10.1016/j.actpsy.2021.103327] [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: 01/22/2021] [Revised: 04/26/2021] [Accepted: 04/29/2021] [Indexed: 01/18/2023] Open
Abstract
A multidimensional approach has been previously applied for modeling and assessment of individual differences in the ability to sleep or to stay awake at certain clock hours. More recently the 19 time-point Visuo-verbal Judgment Task (VJT) has been proposed to predict changes in sleepiness level from the morning hours to the next day afternoon. The dimensionality of the VJT has not been explored so far. We applied a structural model of individual variation in sleep-wake behavior and habits for explaining the pattern of relationship between the VJT's dimensions yielded by rotation of principal components with eigenvalue>1. The responses to 19 items of the VJT, 72 items of 6-scale Sleep Wake Pattern Assessment Questionnaire (SWPAQ) and 60 items of 6-scale Sleep-Wake Adaptability Test (SWAT) were collected from 1037 survey participants. Factor analyses yielded 4 factorial dimensions of morning (08:00-11:00), daytime (12:00-20:00), nighttime (21:00-04:00), and after 24 h sleepiness (06:00-12:00 next day). The model was found to be capable to explain the correlations among 4 constructs of the VJT as well as the correlations among previously developed scales of the SWPAQ and SWAT. The results confirmed the predictive power of the model and its applicability for multidimensional assessments in chronobiological and chronopsychological studies.
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You M, Laborde S, Dosseville F, Salinas A, Allen MS. Associations of chronotype, Big Five, and emotional competences with perceived stress in university students. Chronobiol Int 2020; 37:1090-1098. [PMID: 32400200 DOI: 10.1080/07420528.2020.1752705] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
This study aimed to investigate the associations between individual difference factors (chronotype, Big Five, emotional competences) and perceived stress in French university students. In total, 362 students agreed to take part (M age = 20.19 ± 1.75 years). Participants completed the Caen Chronotype Questionnaire, Big Five Inventory, the Profile of Emotional Competences, and the Perceived Stress Scale. Results showed that chronotype amplitude (+), eveningness chronotype (+), neuroticism (+), conscientiousness (-), and intrapersonal emotional competences (-) were important for perceived stress. These findings have theoretical and practical implications in terms of identifying students who might benefit most from stress management interventions.
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Affiliation(s)
- Min You
- UFR De Psychologie, EA3918 CERREV, University of Caen Normandy , France
| | - Sylvain Laborde
- Department of Performance Psychology, Institute of Psychology, German Sport University Cologne , Cologne, Germany.,EA4260CesamS, University of Caen Normandy , France
| | | | - Agnès Salinas
- UFR De Psychologie, EA3918 CERREV, University of Caen Normandy , France
| | - Mark S Allen
- School of Psychology, University of Wollongong , Wollongong, Australia
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Vetter C. Circadian disruption: What do we actually mean? Eur J Neurosci 2020; 51:531-550. [PMID: 30402904 PMCID: PMC6504624 DOI: 10.1111/ejn.14255] [Citation(s) in RCA: 133] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2018] [Revised: 10/23/2018] [Accepted: 10/23/2018] [Indexed: 12/14/2022]
Abstract
The circadian system regulates physiology and behavior. Acute challenges to the system, such as those experienced when traveling across time zones, will eventually result in re-synchronization to local environmental time cues, but this re-synchronization is oftentimes accompanied by adverse short-term consequences. When such challenges are experienced chronically, adaptation may not be achieved, as for example in the case of rotating night shift workers. The transient and chronic disturbance of the circadian system is most frequently referred to as "circadian disruption", but many other terms have been proposed and used to refer to similar situations. It is now beyond doubt that the circadian system contributes to health and disease, emphasizing the need for clear terminology when describing challenges to the circadian system and their consequences. The goal of this review is to provide an overview of the terms used to describe disruption of the circadian system, discuss proposed quantifications of disruption in experimental and observational settings with a focus on human research, and highlight limitations and challenges of currently available tools. For circadian research to advance as a translational science, clear, operationalizable, and scalable quantifications of circadian disruption are key, as they will enable improved assessment and reproducibility of results, ideally ranging from mechanistic settings, including animal research, to large-scale randomized clinical trials.
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Affiliation(s)
- Céline Vetter
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado
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Laborde S, Lentes T, Hosang TJ, Borges U, Mosley E, Dosseville F. Influence of Slow-Paced Breathing on Inhibition After Physical Exertion. Front Psychol 2019; 10:1923. [PMID: 31507488 PMCID: PMC6715106 DOI: 10.3389/fpsyg.2019.01923] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Accepted: 08/05/2019] [Indexed: 01/18/2023] Open
Abstract
This research aims to investigate whether slow-paced breathing (SPB) improves adaptation to psychological stress, and specifically inhibition, when it is performed before or after physical exertion (PE). According to the resonance model, SPB is expected to increase cardiac vagal activity (CVA). Further, according to the neurovisceral integration model, CVA is positively linked to executive cognitive performance, and would thus play a role in the adaptation to psychological stress. We hypothesized that SPB, in comparison to a control condition, will induce a better adaptation to psychological stress, measured via better inhibitory performance. Two within-subject experiments were conducted with athletes: in the first experiment (N = 60) SPB (or control – neutral TV documentary) was realized before PE (“relax before PE”), and in the second experiment (N = 60) SPB (or the watching TV control) was realized after PE (“relax after PE”). PE consisted of 5 min Burpees, a physical exercise involving the whole body. In both experiments the adaptation to psychological stress was investigated with a Stroop task, a measure of inhibition, which followed PE. Perceived stress increased during PE (partial η2 = 0.63) and during the Stroop task (partial η2 = 0.08), and decreased during relaxation (partial η2 = 0.15), however, no effect of condition was found. At the physiological level PE significantly increased HR, RF, and decreased CVA [operationalized in this research via the root mean square of successive differences (RMSSD)] in both experiments. Further, the number of errors in the incongruent category (Stroop interference accuracy) was found to be lower in the SPB condition in comparison to the control condition, however, these results were not mediated by RMSSD. Additionally, the Stroop interference [reaction times (RTs)] was found to be lower overall in “relax before PE,” however, no effect was found regarding SPB and Stroop interference (RTs). Overall, our results suggest that SPB realized before or after PE has a positive effect regarding adaptation to psychological stress and specifically inhibition, however, the underlying mechanisms require further investigation.
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Affiliation(s)
- Sylvain Laborde
- Department of Performance Psychology, German Sport University Cologne, Cologne, Germany.,Normandie Université, UFR STAPS, EA 4260, Cesams, Caen, France
| | - Theresa Lentes
- Department of Performance Psychology, German Sport University Cologne, Cologne, Germany
| | - Thomas J Hosang
- Experimental Psychology Unit, Department of Psychology, Helmut Schmidt University, Hamburg, Germany
| | - Uirassu Borges
- Department of Performance Psychology, German Sport University Cologne, Cologne, Germany
| | - Emma Mosley
- Southampton Solent University, Southampton, United Kingdom
| | - Fabrice Dosseville
- Normandie Université, UMR-S 1075 COMETE, Caen, France.,INSERM, UMR-S 1075 COMETE, Caen, France
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