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de Souza LC, Lee KM, Chapman-Lopez TJ, Heileson JL, Torres R, Forsse JS, Gallucci AR, Funderburk LK. Sleep, Diet Quality, and Lipid Profile Assessment in NCAA Division I Acrobatics and Tumbling Student-Athletes: A Cross-Sectional Study. JOURNAL OF THE AMERICAN NUTRITION ASSOCIATION 2024; 43:464-472. [PMID: 38377116 DOI: 10.1080/27697061.2024.2312843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Accepted: 01/25/2024] [Indexed: 02/22/2024]
Abstract
OBJECTIVE Acrobatics and Tumbling (A&T), an emerging National Collegiate Athletics Association (NCAA) sport, involves athletes with rigorous training backgrounds, usually extending from youth through early adulthood. This study examines the sleep health, diet quality, and lipid profile of A&T athletes clustered by their performance position. METHODS Forty-two A&T athletes, clustered as tops (n = 19; age = 19.6 ± 1.0 years; body mass index [BMI] = 22.3 ± 1.7 kg/m2) and bases (n = 23; age = 19.6 ± 1.3 years; BMI = 25.7 ± 2.5 kg/m2), completed preseason sleep and diet quality (Rapid Eating Assessment for Participants-Shortened [REAP-S]) surveys. Fasting blood samples were collected for lipid analysis. Body composition was assessed via dual-energy X-ray absorptiometry. RESULTS Most athletes (71.4%; base n = 14, top n = 16) reported insufficient sleep (≤7 hours) and "good" sleep quality (90.4%, n = 38; base n = 18, top n = 20). Average REAP-S score was 29.24 ± 3.74. Approximately 31% (n = 13) displayed at least one undesirable lipid concentration according to medical guidelines for normal levels (total cholesterol [TC] < 200 mg/dL, triglycerides [TG] < 150 mg/dL, high-density lipoprotein cholesterol [HDL-C] > 40 mg/dL, low-density lipoprotein cholesterol [LDL-C] < 130 mg/dL). Approximately 20% exhibited elevated TC (top n = 4, base n = 4), 12.5% had elevated TG (base n = 5), 2.5% showed low HDL-C (base n = 1), and 10% presented elevated LDL-C (top n = 2, base n = 2). CONCLUSIONS Most athletes experienced suboptimal sleep (≤7 hours/night) and 31% displayed at least one undesirable lipid concentration (elevated TC, TG, or LDL-C or reduced HDL-C). Tailoring interventions with sports dietitians is recommended, focused on increasing monounsaturated and polyunsaturated fat intake while reducing saturated fat consumption. These interventions could mitigate cardiovascular risks, improve recovery, and possibly enhance athletic performance.
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Affiliation(s)
- Leticia C de Souza
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, USA
| | - Katherine M Lee
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, USA
| | - Tomas J Chapman-Lopez
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, USA
- Integrated Laboratory of Exercise, Nutrition, and Renal Vascular Research, Baylor University, Waco, Texas, USA
| | - Jeffery L Heileson
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, USA
- Nutrition Services Division, Walter Reed National Military Medical Center, Bethesda, Maryland, USA
| | - Ricardo Torres
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, USA
- Integrated Laboratory of Exercise, Nutrition, and Renal Vascular Research, Baylor University, Waco, Texas, USA
| | - Jeffrey S Forsse
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, USA
- Integrated Laboratory of Exercise, Nutrition, and Renal Vascular Research, Baylor University, Waco, Texas, USA
| | - Andrew R Gallucci
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, USA
| | - LesLee K Funderburk
- Department of Health, Human Performance, and Recreation, Baylor University, Waco, Texas, USA
- Human Sciences and Design, Baylor University, Waco, Texas, USA
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Asplund CA. The Importance of Sleep for Health and Athletic Performance. Sports Health 2024; 16:499-500. [PMID: 38900136 PMCID: PMC11195859 DOI: 10.1177/19417381241257952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024] Open
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Jelmini JD, Gribble PA, Abel MG, Whitehurst LN, Heebner NR. The Influence of Emergency Call Volume on Occupational Workload and Sleep Quality in Urban Firefighters. J Occup Environ Med 2024; 66:580-589. [PMID: 38640943 DOI: 10.1097/jom.0000000000003115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2024]
Abstract
OBJECTIVE The aim of the study is to determine the impact of emergency call volume on exertion, autonomic activity, and sleep among urban structural firefighters. METHODS Thirty-four firefighters wore a wrist-based monitor to track sleep and autonomic parameters and rated their level of perceived exertion (Borg Rating of Perceived Exertion) and subjective sleepiness after a 24-hour shift. Predictive variables included total run time and total run time after 11:59 PM. RESULTS Total run time and sleep duration accounted for Borg Rating of Perceived Exertion and subjective sleepiness, while total run time and total run time after 11:59 PM accounted for sleep durations on-duty. CONCLUSIONS The current results suggest that emergency call volume is associated with indicators of exertion and sleep. As such, call volume tracking is an important consideration for departments to ensure personnel readiness and wellness and provide a method of tracking the occupational demands experienced by firefighters on-duty.
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Affiliation(s)
- Jacob D Jelmini
- From the Sports Medicine Research Institute, College of Health Sciences, University of Kentucky, Lexington, Kentucky (J.D.J., N.R.H.); Department of Athletic Training and Clinical Nutrition, University of Kentucky, Lexington, Kentucky (P.A.G.); First Responder Research Laboratory, Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, Kentucky (M.G.A.); and Department of Psychology, University of Kentucky, Lexington, Kentucky (L.N.W.)
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Kishi A, Millet GY, Desplan M, Lemarchand B, Bouscaren N. Sleep and Ultramarathon: Exploring Patterns, Strategies, and Repercussions of 1,154 Mountain Ultramarathons Finishers. SPORTS MEDICINE - OPEN 2024; 10:34. [PMID: 38589752 PMCID: PMC11001838 DOI: 10.1186/s40798-024-00704-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 03/24/2024] [Indexed: 04/10/2024]
Abstract
BACKGROUND Sleep and physical performance are strongly related and mutually influence each other. Athletes, particularly in disciplines like offshore sailing and ultra-endurance sports, often suffer from sleep deprivation due to factors like irregular training times, travel, and the extended duration of events like 100-mile mountain races. Despite growing interest in sleep's role in sports science, few studies have specifically investigated the sleep patterns of ultramarathon runners. This study aimed to investigate sleep patterns and sleep management strategies in ultramarathons, and the repercussions of sleep deprivation during and after races. METHODS This cross-sectional study using e-survey was conducted on 1154 runners from two ultramarathons (a 165 km race with 9,576 m positive elevation; 2018 finish time [23:18:48-66:04:00], and a 111 km race with 6,433 m elevation; [15:34:56 - 41:54:16]). RESULTS The results revealed that 58% of the runners reported implementing sleep management strategies before or during the race. Most runners began the race with some level of sleep debt (-50 min a week before the race). During the races, 77% of runners slept, with the cumulative sleep duration varying based on race duration and the number of nights spent on the race (76 min at 165 km and 27 min at 111 km). Short naps lasting less than 30 min were the most popular strategy. The prevalence of symptoms attributed to sleep deprivation during the race was high (80%), with reported falls and hallucinations. After the race, runners reported recovering a normal state of wakefulness relatively quickly (within two days); 22% believed that sleep deprivation during the race increased the risk of accidents in everyday life. CONCLUSION This study provides valuable insights into sleep patterns and strategies in ultramarathon running and emphasizes the importance of adequate sleep management for performance and post-race recovery.
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Affiliation(s)
- Anthony Kishi
- Unité Fonctionnelle de Médecine du Sport, CHU de la Réunion, Site Hôpital de Saint-Pierre, BP 350, Saint-Pierre, 97448, France
| | - Guillaume Y Millet
- Inter-university Laboratory of Human Movement Biology, Univ Lyon, UJM-Saint-Etienne, Saint-Etienne, 7424, F-42023, EA, France
- Institut Universitaire de France (IUF), Paris, France
| | - Matthieu Desplan
- Be Sports Clinic, Centre Médical Médimarien, Schaerbeek, 1030, Belgique
| | - Bruno Lemarchand
- Unité Fonctionnelle de Médecine du Sport, CHU de la Réunion, Site Hôpital de Saint-Pierre, BP 350, Saint-Pierre, 97448, France
| | - Nicolas Bouscaren
- Inter-university Laboratory of Human Movement Biology, Univ Lyon, UJM-Saint-Etienne, Saint-Etienne, 7424, F-42023, EA, France.
- Service de santé Publique et soutien à la recherche, INSERM CIC 1410, CHU Réunion, Saint Pierre, France.
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Anderson T, Galan-Lopez N, Taylor L, Post EG, Finnoff JT, Adams WM. Sleep Quality in Team USA Olympic and Paralympic Athletes. Int J Sports Physiol Perform 2024; 19:383-392. [PMID: 38253047 DOI: 10.1123/ijspp.2023-0317] [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: 08/18/2023] [Revised: 12/11/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024]
Abstract
Adequate sleep is crucial for elite athletes' recovery, performance readiness, and immune response. Establishing reference ranges for elite athletes enables appropriate contextualization for designing and targeting sleep interventions. PURPOSE To establish sleep-quality reference ranges for Olympic and Paralympic cohorts using the Pittsburgh Sleep Quality Index (PSQI) and explore differences based on sex and sport types. METHODS Team USA athletes (men = 805, women = 798) completed the PSQI as part of a health-history questionnaire. Descriptive statistics were used to create reference ranges and linear models, and χ2 test of independence determined differences in PSQI global and component scores between sex, games, season, and participation. RESULTS Six hundred thirty-two (39.43%) athletes reported poor sleep (PSQIGlobal ≥ 5). Men displayed later bedtimes (P = .006), better global PSQI scores, shorter sleep latency, less sleep disturbance, and less use of sleep medication than women (all P < .001). Winter Games participants had later bedtime (P = .036) and sleep offset time (P = .028) compared with Summer Games athletes. Team-sport athletes woke earlier than individual-sport athletes (P < .001). Individual-sport athletes were more likely to have low (P = .005) and mild (P = .045) risk for reduced sleep duration than team-sport athletes. CONCLUSION These data provide PSQI-specific reference ranges to identify groups at greatest risk for poor sleep, who may benefit most from targeted sleep interventions.
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Affiliation(s)
- Travis Anderson
- Division of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
| | - Natalia Galan-Lopez
- School of Sport, Exercise and Health Sciences, Loughborough University, National Centre for Sport and Exercise Medicine (NCSEM), Loughborough, United Kingdom
| | - Lee Taylor
- School of Sport, Exercise and Health Sciences, Loughborough University, National Centre for Sport and Exercise Medicine (NCSEM), Loughborough, United Kingdom
- Sport and Exercise Discipline Group, Faculty of Health, University of Technology Sydney, Moore Park, NSW, Australia
- Human Performance Research Centre, University of Technology Sydney (UTS), Sydney, NSW, Australia
| | - Eric G Post
- Division of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
| | - Jonathan T Finnoff
- Division of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
- Department of Physical Medicine and Rehabilitation, University of Colorado, Denver, CO, USA
| | - William M Adams
- Division of Sports Medicine, United States Olympic & Paralympic Committee, Colorado Springs, CO, USA
- United States Coalition for the Prevention of Illness and Injury in Sport, Colorado Springs, CO, USA
- School of Sport, Exercise and Health Sciences, Loughborough University, National Centre for Sport and Exercise Medicine (NCSEM), Loughborough, United Kingdom
- Department of Kinesiology, University of North Carolina-Greensboro, Greensboro, NC, USA
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Bommarito JC, Millar PJ. Effects of aerobic exercise on ambulatory blood pressure responses to acute partial sleep deprivation: impact of chronotype and sleep quality. Am J Physiol Heart Circ Physiol 2024; 326:H291-H301. [PMID: 38038716 DOI: 10.1152/ajpheart.00441.2023] [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: 07/19/2023] [Revised: 11/07/2023] [Accepted: 11/28/2023] [Indexed: 12/02/2023]
Abstract
Blood pressure (BP) follows a circadian rhythm intertwined with the sleep-wake cycle. Acute partial sleep deprivation (PSD; sleep ≤ 6 h) can increase BP, associated with increased cardiovascular risk. Acute exercise can reduce BP for up to 24 h, a phenomenon termed postexercise hypotension. The present study tested whether aerobic exercise could mitigate the augmented 24-h ambulatory BP caused by acute PSD. Twenty-four young otherwise healthy adults (22 ± 3 yr; 14 females; self-reported chronotypes: 6 early/10 intermediate/8 late; Pittsburgh sleep quality index: 17 good/7 poor sleepers) completed a randomized crossover trial in which, on different days, they slept normally (2300-0700), restricted sleep [0330-0700 (PSD)], and cycled for 50 min (70-80% predicted heart rate maximum) before PSD. Ambulatory BP was assessed every 30 min until 2100 the next day. Acute PSD increased 24-h systolic BP (control 117 ± 9 mmHg, PSD 122 ± 9 mmHg; P < 0.001) and prior exercise attenuated (exercise + PSD 120 ± 9 mmHg; P = 0.04 vs. PSD) but did not fully reverse this response (exercise + PSD, P = 0.02 vs. control). Subgroup analysis revealed that the 24-h systolic BP reduction following exercise was specific to late types (PSD 119 ± 7 vs. exercise + PSD 116 ± 6 mmHg; P < 0.05). Overall, habitual sleep quality was negatively correlated with the change in daytime systolic BP following PSD (r = -0.56, P < 0.01). These findings suggest that the ability of aerobic cycling exercise to counteract the hemodynamic effects of acute PSD in young adults may be dependent on chronotype and that habitual sleep quality can predict the daytime BP response to acute PSD.NEW & NOTEWORTHY We demonstrate that cycling exercise attenuates, but does not fully reverse, the augmented 24-h ambulatory blood pressure (BP) response caused by acute partial sleep deprivation (PSD). This response was primarily observed in late chronotypes. Furthermore, daytime BP after acute PSD is related to habitual sleep quality, with better sleepers being more prone to BP elevations. This suggests that habitual sleeping habits can influence BP responses to acute PSD and their interactions with prior cycling exercise.
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Affiliation(s)
- Julian C Bommarito
- Human Cardiovascular Physiology Laboratory, Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
| | - Philip J Millar
- Human Cardiovascular Physiology Laboratory, Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario, Canada
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Nobari H, Azarian S, Saedmocheshi S, Valdés-Badilla P, García Calvo T. Narrative review: The role of circadian rhythm on sports performance, hormonal regulation, immune system function, and injury prevention in athletes. Heliyon 2023; 9:e19636. [PMID: 37809566 PMCID: PMC10558889 DOI: 10.1016/j.heliyon.2023.e19636] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 08/21/2023] [Accepted: 08/29/2023] [Indexed: 10/10/2023] Open
Abstract
Objectives This study was a narrative review of the importance of circadian rhythm (CR), describes the underlying mechanisms of CR in sports performance, emphasizes the reciprocal link between CR, endocrine homeostasis and sex differences, and the unique role of the circadian clock in immune system function and coordination. Method As a narrative review study, a comprehensive search was conducted in PubMed, Scopus, and Web of Science (core collection) databases using the keywords "circadian rhythm", "sports performance", "hormonal regulation", "immune system", and "injury prevention". Inclusion criteria were studies published in English and peer-reviewed journals until July 2023. Studies that examined the role of CR in sports performance, hormonal status, immune system function, and injury prevention in athletes were selected for review. Results CR is followed by almost all physiological and biochemical activities in the human body. In humans, the superchiasmatic nucleus controls many daily biorhythms under solar time, including the sleep-wake cycle. A body of literature indicates that the peak performance of essential indicators of sports performance is primarily in the afternoon hours, and the evening of actions occurs roughly at the peak of core body temperature. Recent studies have demonstrated that the time of day that exercise is performed affects the achievement of good physical performance. This review also shows various biomarkers of cellular damage in weariness and the underlying mechanisms of diurnal fluctuations. According to the clock, CR can be synchronized with photonic and non-photonic stimuli (i.e., temperature, physical activity, and food intake), and feeding patterns and diet changes can affect CR and redox markers. It also emphasizes the reciprocal links between CR and endocrine homeostasis, the specific role of the circadian clock in coordinating immune system function, and the relationship between circadian clocks and sex differences. Conclusion The interaction between insufficient sleep and time of day on performance has been established in this study because it is crucial to balance training, recovery, and sleep duration to attain optimal sports performance.
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Affiliation(s)
- Hadi Nobari
- Faculty of Sport Sciences, University of Extremadura, 10003, Cáceres, Spain
- Department of Exercise Physiology, Faculty of Educational Sciences and Psychology, University of Mohaghegh Ardabili, Ardabil, 56199-11367, Iran
| | - Somayeh Azarian
- Department of Exercise Physiology, Faculty of Educational Sciences and Psychology, University of Mohaghegh Ardabili, Ardabil, 56199-11367, Iran
| | - Saber Saedmocheshi
- Department of Physical Education and Sport Sciences, Faculty of Humanities and Social Sciences, University of Kurdistan, Sanandaj, 66177-15175, Iran
| | - Pablo Valdés-Badilla
- Department of Physical Activity Sciences, Faculty of Education Sciences, Universidad Católica del Maule, Talca, 3530000, Chile
- Sports Coach Career, School of Education, Universidad Viña del Mar, Viña del Mar, 2520000, Chile
| | - Tomás García Calvo
- Faculty of Sport Sciences, University of Extremadura, 10003, Cáceres, Spain
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Fullagar HHK, Vincent GE, McCullough M, Halson S, Fowler P. Sleep and Sport Performance. J Clin Neurophysiol 2023; 40:408-416. [PMID: 36930212 DOI: 10.1097/wnp.0000000000000638] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023] Open
Abstract
SUMMARY Elite athletes and coaches believe sleep is the most important recovery strategy and widely consider it critical to optimal performance. Despite this perceived importance, there are numerous circumstances that can reduce sleep quantity and quality in athletic populations. Because of the effects of sleep loss on various physical, neurophysiological, and cognitive parameters, such perturbations can have consequences for performance and recovery outcomes. Although peer-reviewed literature examining the interaction between sleep, performance, and recovery in athletes is increasing, understanding of these issues remains equivocal. Perhaps most pertinently, the effect of sleep on sport performance does not align with a one-size-fits-all approach and rather depends on numerous factors such as type of sport, scheduling, time of the season, and the intraindividual requirements for sleep. The relationship between brain plasticity and memory, which in turn can influence learning processes and long-term memory consolidation, suggests that sleep may play an important role in learning new skills and tactics for both elite and developing athletes. The aim of this special issue review was to analyze the evidence of sleep loss on sport performance and recovery, with a specific focus on elite athletes. An assessment of these sleep-compromising situations that elite athletes may face during a typical season and practical considerations for alleviating these issues is also provided to further the understanding for medical professionals, scientists, and applied sporting practitioners alike.
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Affiliation(s)
- Hugh H K Fullagar
- Sport & Exercise Discipline Group, Faculty of Health, University of Technology Sydney, Sydney, New South Wales, Australia
| | - Grace E Vincent
- School of Health, Medical and Applied Sciences, Appleton Institute, Central Queensland University, Adelaide, South Australia, Australia
| | | | - Shona Halson
- School of Behavioural and Health Sciences, Australian Catholic University, Fitzroy, Victoria, Australia ; and
| | - Peter Fowler
- Faculty of Health, Queensland University of Technology, Brisbane City, Queensland, Australia
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Souabni M, Hammouda O, Souabni MJ, Romdhani M, Driss T. 40-min nap opportunity attenuates heart rate and perceived exertion and improves physical specific abilities in elite basketball players. Res Sports Med 2023; 31:859-872. [PMID: 35470727 DOI: 10.1080/15438627.2022.2064221] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Accepted: 04/05/2022] [Indexed: 10/18/2022]
Abstract
The effect of a 40-min nap opportunity on physiological responses and specific abilities was investigated. Twelve high-level professional basketball players (26.33±5.2 years; 193.17±7.1 m; 87.48±11.2 kg) undertook randomly 40-min nap opportunity (NAP) and control condition (CON). Wellness (Hooper Index) and Epworth Sleepiness Scale (ESS) were measured before and after both conditions. Defensive (DA) and offensive (OA) agility and upper body power (UBP) were assessed after both conditions. Shooting skill (SST) performance was evaluated prior and after a fatiguing task (FT). Heart rate (HR) and rating of perceived exertion (RPE) were recorded during SST-test, FT and SST-retest. ESS, Hooper's stress and fatigue score were significantly lower after nap compared to those before nap (0.009 ≤ p ≤ 0.03). Better performance was obtained in NAP compared to CON condition for DA, OA and UBP (0.0005 ≤ p ≤ 0.02). SST performance was significantly higher in NAP compared to CON in the retest session (p = 0.003, Δ = 20.2%). The improved performance was associated with significant lower HRpeak (p = 0.01, Δ = 5.25%) and RPE (p = 0.003, Δ = 15.12%). In conclusion, NAP reduced sleepiness and stress and fatigue and enhances physical outcomes of specific skills in elite basketball players.
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Affiliation(s)
- Maher Souabni
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (Linp2), Upl, Ufr Staps (Faculty of Sport Sciences), Paris Nanterre University, Nanterre, France
| | - Omar Hammouda
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (Linp2), Upl, Ufr Staps (Faculty of Sport Sciences), Paris Nanterre University, Nanterre, France
- Research Laboratory, Molecular Bases of Human Pathology, LR19ES13, Faculty of Medicine, University of Sfax, Sfax, Tunisia
| | - Mehdi J Souabni
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (Linp2), Upl, Ufr Staps (Faculty of Sport Sciences), Paris Nanterre University, Nanterre, France
| | - Mohamed Romdhani
- Physical activity, Sport and health, UR18JS01, National Observatory of Sports, Tunis, Tunisia
| | - Tarak Driss
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (Linp2), Upl, Ufr Staps (Faculty of Sport Sciences), Paris Nanterre University, Nanterre, France
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Lopes TR, Pereira HM, Bittencourt LRA, Silva BM. How Much Does Sleep Deprivation Impair Endurance Performance? A Systematic Review and Meta-analysis. Eur J Sport Sci 2022:1-14. [DOI: 10.1080/17461391.2022.2155583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Thiago Ribeiro Lopes
- Laboratory of Exercise Physiology at Olympic Center of Training and Research, Department of Physiology, Federal University of São Paulo, São Paulo, SP, Brazil
- São Paulo Association for Medicine Development, São Paulo, SP, Brazil
| | - Hugo Maxwell Pereira
- Department of Health and Exercise Science, The University of Oklahoma, Norman, OK, USA
| | | | - Bruno Moreira Silva
- Laboratory of Exercise Physiology at Olympic Center of Training and Research, Department of Physiology, Federal University of São Paulo, São Paulo, SP, Brazil
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Romdhani M, Fullagar HHK, Vitale JA, Nédélec M, Rae DE, Ammar A, Chtourou H, Al Horani RA, Ben Saad H, Bragazzi NL, Dönmez G, Dergaa I, Driss T, Farooq A, Hammouda O, Harroum N, Hassanmirzaei B, Khalladi K, Khemila S, Mataruna-Dos-Santos LJ, Moussa-Chamari I, Mujika I, Muñoz Helú H, Norouzi Fashkhami A, Paineiras-Domingos LL, Khaneghah MR, Saita Y, Souissi N, Trabelsi K, Washif JA, Weber J, Zmijewski P, Taylor L, Garbarino S, Chamari K. Lockdown Duration and Training Intensity Affect Sleep Behavior in an International Sample of 1,454 Elite Athletes. Front Physiol 2022; 13:904778. [PMID: 35784859 PMCID: PMC9240664 DOI: 10.3389/fphys.2022.904778] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 04/27/2022] [Indexed: 11/13/2022] Open
Abstract
Objective: To investigate the effect of 1) lockdown duration and 2) training intensity on sleep quality and insomnia symptoms in elite athletes. Methods: 1,454 elite athletes (24.1 ± 6.7 years; 42% female; 41% individual sports) from 40 countries answered a retrospective, cross-sectional, web-based questionnaire relating to their behavioral habits pre- and during- COVID-19 lockdown, including: 1) Pittsburgh sleep quality index (PSQI); 2) Insomnia severity index (ISI); bespoke questions about 3) napping; and 4) training behaviors. The association between dependent (PSQI and ISI) and independent variables (sleep, napping and training behaviors) was determined with multiple regression and is reported as semi-partial correlation coefficient squared (in percentage). Results: 15% of the sample spent < 1 month, 27% spent 1–2 months and 58% spent > 2 months in lockdown. 29% self-reported maintaining the same training intensity during-lockdown whilst 71% reduced training intensity. PSQI (4.1 ± 2.4 to 5.8 ± 3.1; mean difference (MD): 1.7; 95% confidence interval of the difference (95% CI): 1.6–1.9) and ISI (5.1 ± 4.7 to 7.7 ± 6.4; MD: 2.6; 95% CI: 2.3–2.9) scores were higher during-compared to pre-lockdown, associated (all p < 0.001) with longer sleep onset latency (PSQI: 28%; ISI: 23%), later bedtime (PSQI: 13%; ISI: 14%) and later preferred time of day to train (PSQI: 9%; ISI: 5%) during-lockdown. Those who reduced training intensity during-lockdown showed higher PSQI (p < 0.001; MD: 1.25; 95% CI: 0.87–1.63) and ISI (p < 0.001; MD: 2.5; 95% CI: 1.72–3.27) scores compared to those who maintained training intensity. Although PSQI score was not affected by the lockdown duration, ISI score was higher in athletes who spent > 2 months confined compared to those who spent < 1 month (p < 0.001; MD: 1.28; 95% CI: 0.26–2.3). Conclusion: Reducing training intensity during the COVID-19-induced lockdown was associated with lower sleep quality and higher insomnia severity in elite athletes. Lockdown duration had further disrupting effects on elite athletes’ sleep behavior. These findings could be of relevance in future lockdown or lockdown-like situations (e.g., prolonged illness, injury, and quarantine after international travel).
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Affiliation(s)
- Mohamed Romdhani
- High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
- Physical Activity, Sport and Health, UR18JS01, National Observatory of Sports, Tunis, Tunisia
- *Correspondence: Mohamed Romdhani,
| | - Hugh H. K. Fullagar
- School of Sport, Exercise and Rehabilitation, Faculty of Health, University of Technology Sydney, Sydney, NSW, Australia
| | | | - Mathieu Nédélec
- Research Unit, Laboratory Sport, Expertise and Performance (EA7370), The French National Institute of Sport (INSEP), Paris, France
| | - Dale E. Rae
- Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Achraf Ammar
- Institute of Sport Science, Otto-Von-Guericke University, Magdeburg, Germany
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UFR STAPS, UPL, Paris Nanterre University, Nanterre, France
| | - Hamdi Chtourou
- High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
- Physical Activity, Sport and Health, UR18JS01, National Observatory of Sports, Tunis, Tunisia
| | | | - Helmi Ben Saad
- Laboratoire de Recherche (LR12SP09) “Insuffisance Cardiaque”, Hôpital Farhat HACHED, Faculté de Médecine de Sousse, Université de Sousse, Sousse, Tunisia
| | - Nicola Luigi Bragazzi
- Department of Health Sciences, Postgraduate School of Public Health, University of Genoa, Genoa, Italy
- Laboratory for Industrial and Applied Mathematics, Department of Mathematics and Statistics, York University, Toronto, ON, Canada
| | - Gürhan Dönmez
- Department of Sports Medicine, Hacettepe University School of Medicine, Ankara, Turkey
| | | | - Tarak Driss
- Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UFR STAPS, UPL, Paris Nanterre University, Nanterre, France
| | - Abdulaziz Farooq
- Aspetar, Orthopaedic and Sports Medicine Hospital, FIFA Medical Center of Excellence, Doha, Qatar
| | - 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
| | - Nesrine Harroum
- School of Kinesiology and Physical Activity Science, Faculty of Medicine, Montreal University, Montreal, QC, Canada
| | - Bahar Hassanmirzaei
- Sports Medicine Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
- Iran Football Medical Assessment and Rehabilitation Center, IFMARC, FIFA Medical Center of Excellence, Tehran, Iran
| | - Karim Khalladi
- Aspetar, Orthopaedic and Sports Medicine Hospital, FIFA Medical Center of Excellence, Doha, Qatar
| | - Syrine Khemila
- Physical Activity, Sport and Health, UR18JS01, National Observatory of Sports, Tunis, Tunisia
- High Institute of Sports and Physical Education Ksar-Said, Manouba University, Manouba, Tunisia
| | - Leonardo Jose Mataruna-Dos-Santos
- Department of Sport Management, Faculty of Management, Canadian University of Dubai, Dubai, United Arab Emirates
- Coventry University—Centre for Trust, Peace and Social Relation, Coventry, United Kingdom, United Kingdom
| | - Imen Moussa-Chamari
- Physical Education Department, College of Education, Qatar University, Doha, Qatar
| | - Iñigo Mujika
- Department of Physiology, Faculty of Medicine and Nursing, University of the Basque Country, Bilbao, Spain
- Exercise Science Laboratory, School of Kinesiology, Faculty of Medicine, Universidad Finis Terrae, Santiago, Chile
| | - Hussein Muñoz Helú
- Department of Economic-Administrative Sciences, Universidad Autónoma de Occidente, Culiacán, Mexico
| | | | - Laisa Liane Paineiras-Domingos
- Programa de Pós-Graduação em Ciências Médicas, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
- Departamento de Fisioterapia, Instituto Multidisciplinar de Reabilitação e Saúde, Universidade Federal da Bahia, Salvador, Brazil
| | | | - Yoshitomo Saita
- Department of Sports and Regenerative Medicine, Juntendo University, Tokyo, Japan
| | - Nizar Souissi
- Physical Activity, Sport and Health, UR18JS01, National Observatory of Sports, Tunis, Tunisia
- High Institute of Sports and Physical Education Ksar-Said, Manouba University, Manouba, Tunisia
| | - Khaled Trabelsi
- High Institute of Sport and Physical Education, Sfax University, Sfax, Tunisia
- Research Laboratory: Education, Motricity, Sport and Health, EM2S, LR19JS01, University of Sfax, Sfax, Tunisia
| | - Jad Adrian Washif
- Sports Performance Division, National Sports Institute of Malaysia, Kuala Lumpur, Malaysia
| | - Johanna Weber
- Neurocognition and Action—Biomechanics, Bielefeld University, Bielefeld, Germany
- Institute for Sports Science, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Piotr Zmijewski
- Józef Piłsudski University of Physical Education in Warsaw, Warsaw, Poland
| | - Lee Taylor
- School of Sport, Exercise and Health Sciences, National Center for Sport and Exercise Medicine (NCSEM), Loughborough University, Loughborough, United Kingdom
- Sport and Exercise Discipline Group, Faculty of Health, University of Technology Sydney (UTS), Sydney, NSW, Australia
| | - Sergio Garbarino
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal-Infantile Sciences, University of Genoa, Genoa, Italy
- Post-Graduate School of Occupational Medicine, Università Cattolica del Sacro Cuore, Roma, Italy
| | - Karim Chamari
- Aspetar, Orthopaedic and Sports Medicine Hospital, FIFA Medical Center of Excellence, Doha, Qatar
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Stavrou VT, Astara K, Tourlakopoulos KN, Papayianni E, Boutlas S, Vavougios GD, Daniil Z, Gourgoulianis KI. Obstructive Sleep Apnea Syndrome: The Effect of Acute and Chronic Responses of Exercise. Front Med (Lausanne) 2022; 8:806924. [PMID: 35004785 PMCID: PMC8738168 DOI: 10.3389/fmed.2021.806924] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 12/07/2021] [Indexed: 11/22/2022] Open
Abstract
Obstructive Sleep Apnea Syndrome (OSAS) is a sleep disorder with high prevalence in general population, but alarmingly low in clinicians' differential diagnosis. We reviewed the literature on PubMed and Scopus from June 1980–2021 in order to describe the altered systematic pathophysiologic mechanisms in OSAS patients as well as to propose an exercise program for these patients. Exercise prevents a dysregulation of both daytime and nighttime cardiovascular autonomic function, reduces body weight, halts the onset and progress of insulin resistance, while it ameliorates excessive daytime sleepiness, cognitive decline, and mood disturbances, contributing to an overall greater sleep quality and quality of life.
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Affiliation(s)
- Vasileios T Stavrou
- Laboratory of Cardio-Pulmonary Testing and Pulmonary Rehabilitation, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Kyriaki Astara
- Laboratory of Cardio-Pulmonary Testing and Pulmonary Rehabilitation, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Konstantinos N Tourlakopoulos
- Laboratory of Cardio-Pulmonary Testing and Pulmonary Rehabilitation, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Eirini Papayianni
- Laboratory of Cardio-Pulmonary Testing and Pulmonary Rehabilitation, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Stylianos Boutlas
- Laboratory of Cardio-Pulmonary Testing and Pulmonary Rehabilitation, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - George D Vavougios
- Laboratory of Cardio-Pulmonary Testing and Pulmonary Rehabilitation, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Zoe Daniil
- Laboratory of Cardio-Pulmonary Testing and Pulmonary Rehabilitation, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
| | - Konstantinos I Gourgoulianis
- Laboratory of Cardio-Pulmonary Testing and Pulmonary Rehabilitation, Department of Respiratory Medicine, Faculty of Medicine, University of Thessaly, Larissa, Greece
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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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14
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Botonis PG, Koutouvakis N, Toubekis AG. The impact of daytime napping on athletic performance - A narrative review. Scand J Med Sci Sports 2021; 31:2164-2177. [PMID: 34559915 DOI: 10.1111/sms.14060] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 09/15/2021] [Accepted: 09/21/2021] [Indexed: 11/28/2022]
Abstract
Mid-day napping has been recommended as a countermeasure against sleep debt and an effective method for recovery, regardless of nocturnal sleep duration. Herein, we summarize the available evidence regarding the influence of napping on exercise and cognitive performance as well as the effects of napping on athletes' perceptual responses prior to or during exercise. The existing studies investigating the influence of napping on athletic performance have revealed equivocal results. Prevailing findings indicate that following a normal sleep night or after a night of sleep loss, a mid-day nap may enhance or restore several exercise and cognitive performance aspects, while concomitantly provide benefits on athletes' perceptual responses. Most, but not all, findings suggest that compared to short-term naps (20-30 min), long-term ones (>35-90 min) appear to provide superior benefits to the athletes. The underlying mechanisms behind athletic performance enhancement following a night of normal sleep or the restoration after a night of sleep loss are not clear yet. However, the absence of benefits or even the deterioration of performance following napping in some studies is likely the result of sleep inertia. The present review sheds light on the predisposing factors that influence the post-nap outcome, such as nocturnal sleep time, mid-day nap duration and the time elapsed between the end of napping and the subsequent testing, discusses practical solutions and stimulates further research on this area.
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Affiliation(s)
- Petros G Botonis
- School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, Greece
| | - Nickos Koutouvakis
- School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, Greece
| | - Argyris G Toubekis
- School of Physical Education and Sports Science, National and Kapodistrian University of Athens, Athens, Greece
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15
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Smyth B, Lawlor A, Berndsen J, Feely C. Recommendations for marathon runners: on the application of recommender systems and machine learning to support recreational marathon runners. USER MODELING AND USER-ADAPTED INTERACTION 2021; 32:787-838. [PMID: 36452939 PMCID: PMC9701182 DOI: 10.1007/s11257-021-09299-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 07/22/2021] [Indexed: 06/17/2023]
Abstract
Every year millions of people, from all walks of life, spend months training to run a traditional marathon. For some it is about becoming fit enough to complete the gruelling 26.2 mile (42.2 km) distance. For others, it is about improving their fitness, to achieve a new personal-best finish-time. In this paper, we argue that the complexities of training for a marathon, combined with the availability of real-time activity data, provide a unique and worthwhile opportunity for machine learning and for recommender systems techniques to support runners as they train, race, and recover. We present a number of case studies-a mix of original research plus some recent results-to highlight what can be achieved using the type of activity data that is routinely collected by the current generation of mobile fitness apps, smart watches, and wearable sensors.
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Affiliation(s)
- Barry Smyth
- Insight SFI Centre for Data Analytics, University College Dublin, Dublin, Ireland
| | - Aonghus Lawlor
- Insight SFI Centre for Data Analytics, University College Dublin, Dublin, Ireland
| | - Jakim Berndsen
- Insight SFI Centre for Data Analytics, University College Dublin, Dublin, Ireland
| | - Ciara Feely
- Insight SFI Centre for Data Analytics, University College Dublin, Dublin, Ireland
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16
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Trabelsi K, Masmoudi L, Ammar A, Boukhris O, Khacharem A, Jemal M, Zlitni S, Bragazzi NL, Clark CCT, Lastella M, Chtourou H. The effects of Ramadan intermittent fasting on sleep-wake behaviour and daytime sleepiness in team sport referees. J Sports Sci 2021; 39:2411-2417. [PMID: 34128455 DOI: 10.1080/02640414.2021.1935672] [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] [Indexed: 10/21/2022]
Abstract
The aim of the present study was to evaluate the impact of Ramadan fasting on sleep quality and daytime sleepiness in team sport referees. Seventy-eight male amateur team sport referees (age: 31.1 ± 10.8 years) participated in this study. Participants responded to the Arabic version of the Pittsburgh Sleep Quality Index (PSQI) and the Epworth sleepiness scale (ESS) questionnaires before (10-days prior) and during (last 7-days) the month of Ramadan.PSQI and ESS scores increased significantly during Ramadan (both p < .001, ES = 0.56 and 0.54, respectively) with 83.3% of participants scoring ≥5 in the PSQI. The percentage of participants suffering from severe excessive daytime sleepiness (ESS score ≥ 16) was 3.8% before vs. 7.7% during Ramadan (p < 0.001). Sleep duration decreased by ~ 1 h during Ramadan (p < .001, ES = 0.61) and was associated with a delay in bedtime of ~ 2 h (p < 0.001, ES = 0.7) and of wake-up time of ~ 1 h (p < 0.001, ES = 0.5). The score for daytime dysfunction and subjective sleep perception, as components of the PSQI, increased (both p < 0.001; ES = 0.79, ES = 0.57, respectively), whereas the score for the use of sleep medication decreased during vs. before Ramadan (p = 0.041, ES = 0.47). Ramadan fasting impaired sleep quality and increased daytime sleepiness in team sport referees. Future studies, using objective assessment tools, are warranted.
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Affiliation(s)
- Khaled Trabelsi
- Research Laboratory: Education, Motricité, Sport Et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia.,Institut Supérieur Du Sport Et De L'éducation Physique De Sfax, Université De Sfax, Sfax, Tunisie
| | - Liwa Masmoudi
- Research Laboratory: Education, Motricité, Sport Et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia.,Institut Supérieur Du Sport Et De L'éducation Physique De Sfax, Université De Sfax, Sfax, Tunisie
| | - Achraf Ammar
- Institute of Sport Science, Otto-von-Guericke University Magdeburg, Magdeburg, Germany.,Interdisciplinary Laboratory in Neurosciences, Physiology and Psychology: Physical Activity, Health and Learning (LINP2), UFR STAPS, UPL, Paris Nanterre University, France
| | - Omar Boukhris
- Physical Activity, Sport and Health, Research Unit, UR18JS01, National Sport Observatory, Tunis, Tunisia
| | - Aïmen Khacharem
- UVHC, DeVisu, Valenciennes; LIRTES-EA 7313, Université Paris Est Créteil Val De Marne, France
| | - Mohamed Jemal
- Research Laboratory: Education, Motricité, Sport Et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Sahar Zlitni
- Research Laboratory: Education, Motricité, Sport Et Santé, EM2S, LR19JS01, High Institute of Sport and Physical Education of Sfax, University of Sfax, Sfax, Tunisia
| | - Nicola Luigi Bragazzi
- Department of Health Sciences (DISSAL), Postgraduate School of Public Health, University of Genoa, Genoa, Italy.,Department of Mathematics and Statistics, Laboratory for Industrial and Applied Mathematics (LIAM), York University, Toronto, ON, Canada
| | - Cain C T Clark
- Centre for Intelligent Healthcare, Coventry University, Coventry, UK
| | - Michele Lastella
- The Appleton Institute for Behavioural Science, Central Queensland University, Adelaide, Australia
| | - Hamdi Chtourou
- Institut Supérieur Du Sport Et De L'éducation Physique De Sfax, Université De Sfax, Sfax, Tunisie.,Physical Activity, Sport and Health, Research Unit, UR18JS01, National Sport Observatory, Tunis, Tunisia
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17
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Nutritional Interventions to Improve Sleep in Team-Sport Athletes: A Narrative Review. Nutrients 2021; 13:nu13051586. [PMID: 34068512 PMCID: PMC8150598 DOI: 10.3390/nu13051586] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/06/2021] [Accepted: 05/07/2021] [Indexed: 12/22/2022] Open
Abstract
Athletes often experience sleep disturbances and poor sleep as a consequence of extended travel, the timing of training and competition (i.e., early morning or evening), and muscle soreness. Nutrition plays a vital role in sports performance and recovery, and a variety of foods, beverages, and supplements purportedly have the capacity to improve sleep quality and quantity. Here, we review and discuss relevant studies regarding nutrition, foods, supplements, and beverages that may improve sleep quality and quantity. Our narrative review was supported by a semi-systematic approach to article searching, and specific inclusion and exclusion criteria, such that articles reviewed were relevant to athletes and sporting environments. Six databases—PubMed, Scopus, CINAHL, EMBASE, SPORTDiscus, and Google Scholar—were searched for initial studies of interest from inception to November 2020. Given the paucity of sleep nutrition research in the athlete population, we expanded our inclusion criteria to include studies that reported the outcomes of nutritional interventions to improve sleep in otherwise healthy adults. Carbohydrate ingestion to improve sleep parameters is inconclusive, although high glycemic index foods appear to have small benefits. Tart cherry juice can promote sleep quantity, herbal supplements can enhance sleep quality, while kiwifruit and protein interventions have been shown to improve both sleep quality and quantity. Nutritional interventions are an effective way to improve sleep quality and quantity, although further research is needed to determine the appropriate dose, source, and timing in relation to training, travel, and competition requirements.
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Charest J, Marois A, Bastien CH. Can a tDCS treatment enhance subjective and objective sleep among student-athletes? JOURNAL OF AMERICAN COLLEGE HEALTH : J OF ACH 2021; 69:378-389. [PMID: 31724914 DOI: 10.1080/07448481.2019.1679152] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 09/06/2019] [Accepted: 10/06/2019] [Indexed: 06/10/2023]
Abstract
INTRODUCTION Previous studies have shown that student-athletes suffer from sleep difficulties. This study explored the impact of tDCS on sleep parameters among student-athletes. METHOD Thirty student-athletes (15 females, 15 males, age 21.1 ± 2.1 years) were recruited. All participants underwent a series of questions to rule out depressive and anxiety disorders or any specific tDCS exclusion criteria. All participants were advised to maintain their usual sleep schedule. RESULTS Compared polysomnographic and Psychomotor Vigilance Task data analyses did not show any improvement after experimental tDCS. Regardless of groups, PVT mean reaction time was decreased. Regarding the questionnaires, data analyses showed improvement on the PSQI (p < .001), ISI (p < .001) and ASSQ (p < .007) scores after tDCS. DISCUSSION tDCS appears to increase total sleep time and should be further explored. Improvements in subjective sleep suggest that tDCS bears interesting possibilities into the enhancement of sleep among student-athletes.
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19
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Impact of training volume and experience on amateur Ironman triathlon performance. Physiol Behav 2021; 232:113344. [PMID: 33516745 DOI: 10.1016/j.physbeh.2021.113344] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Revised: 01/27/2021] [Accepted: 01/28/2021] [Indexed: 11/21/2022]
Abstract
PURPOSE To investigate the association between training volume, sleep time, signs and symptoms of excessive training (overtraining), and previous triathlon experience with overall and split race times in the Ironman distance triathlon. METHODS Ninety-nine triathletes (19 women and 80 men) answered an online survey containing questions about anthropometric characteristics (body mass and height), weekly training volume (hours per day and days per week), previous experience in Ironman distance triathlon race, and signs and symptoms of excessive training. Data of race times of all participants were collected by a single race (the Ironman Brazil 2019 - Florianópolis). All surveys were collected between 28 and 30 days before the race. The athlete was instructed to answer the questions according to what was happening in the week before completing the survey. RESULTS Total race time did not differ among those who trained up to 14 h per week (11:28:46±01:54:30 h:min:sec), between 15 and 20 h per week (11:37:31±01:20:26 h:min:sec) or more than 20 h per week (11:30:18±01:31:28 h:min:sec) (p = 0.922). Total race time of the triathletes who presented (12:42:22±01:49:36 h:min:sec) or no (11:23:06±01:29:02 h:min:sec) unintentional body mass loss (p = 0.006), feeling (12:46:17±02:03:13 h:min:sec) or no (11:24:09±01:28:07 h:min:sec) of decreased performance (p = 0.009) or feeling (12:08:58±01:47:12 h:min:sec) or no (11:16:34±01:24:53 h:min:sec) loss of energy (p = 0.011) in the week prior to the race were significantly different. Triathletes who had a previous experience in Ironman races achieved a better performance (11:15:21±01:32:04 h:min:sec) than those without previous experience (12:06:38±01:32:10 h:min:sec) (p = 0.010). CONCLUSION In summary, high volumes of training (more than 20 h per week), when performed forty days before a race, may not have a positive impact on performance compared to lower volumes of training (up to 14 h per week). However, athletes who had a previous experience in Ironman race presented better results in swimming splits and overall race time. Moreover, the presence of overtraining symptoms, such as unintentional loss of weight, sensation of fatigue and/or performance decrease impact negatively triathlon performance.
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20
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Caffeine Use or Napping to Enhance Repeated Sprint Performance After Partial Sleep Deprivation: Why Not Both? Int J Sports Physiol Perform 2021; 16:711-718. [PMID: 33571957 DOI: 10.1123/ijspp.2019-0792] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 04/29/2020] [Accepted: 06/22/2020] [Indexed: 11/18/2022]
Abstract
PURPOSE To compare the effect of a 20-minute nap opportunity (N20), a moderate dose of caffeine (CAF; 5 mg·kg-1), or a moderate dose of caffeine before N20 (CAF+N) as possible countermeasures to the decreased performance and the partial sleep deprivation-induced muscle damage. METHODS Nine male, highly trained judokas were randomly assigned to either baseline normal sleep night, placebo, N20, CAF, or CAF+N. Test sessions included the running-based anaerobic sprint test, from which the maximum (Pmax), mean (Pmean), and minimum (Pmin) powers were calculated. Biomarkers of muscle, hepatic, and cardiac damage and of enzymatic and nonenzymatic antioxidants were measured at rest and after the exercise. RESULTS N20 increased Pmax compared with placebo (P < .01, d = 0.75). CAF+N increased Pmax (P < .001, d = 1.5; d = 0.94), Pmin (P < .001, d = 2.79; d = 2.6), and Pmean (P < .001, d = 1.93; d = 1.79) compared with placebo and CAF, respectively. Postexercise creatine kinase increased whenever caffeine was added, that is, after CAF (P < .001, d = 1.19) and CAF+N (P < .001, d = 1.36). Postexercise uric acid increased whenever participants napped, that is, after N20 (P < .001, d = 2.19) and CAF+N (P < .001, d = 2.50) and decreased after CAF (P < .001, d = 2.96). CONCLUSION Napping improved repeated-sprint performance and antioxidant defense after partial sleep deprivation. Contrarily, caffeine increased muscle damage without improving performance. For sleep-deprived athletes, caffeine before a short nap opportunity would be more beneficial for repeated sprint performance than each treatment alone.
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21
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Romdhani M, Souissi N, Chaabouni Y, Mahdouani K, Driss T, Chamari K, Hammouda O. Improved Physical Performance and Decreased Muscular and Oxidative Damage With Postlunch Napping After Partial Sleep Deprivation in Athletes. Int J Sports Physiol Perform 2020; 15:874-883. [PMID: 32023544 DOI: 10.1123/ijspp.2019-0308] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 09/03/2019] [Accepted: 09/30/2019] [Indexed: 11/18/2022]
Abstract
PURPOSE To investigate the effects of napping after partial sleep deprivation (PSD) on reaction time, mood, and biochemical response to repeated-sprint exercise in athletes. METHODS Nine male judokas performed 4 test sessions in a counterbalanced and randomized order. Participants accomplished 1 control session after a normal sleep night (NSN) and 3 after PSD with (1) no nap, (2) ∼20-min nap (N20), and (3) ∼90-min nap (N90) opportunities. Test sessions included the running-based anaerobic sprint test, reaction time, Hooper index, and Epworth Sleepiness Scale. Muscle-damage biomarkers and antioxidant status were evaluated before and after exercise. RESULTS PSD decreased maximum (P < .001, d = 1.12), mean (P < .001, d = 1.33), and minimum (P < .001, d = 1.15) powers compared with NSN. However, N20 and N90 enhanced maximum power compared with PSD (P < .05, d = 0.54; P < .001, d = 1.06, respectively). Minimum power and mean power increased only after N90 (P < .001, d = 1.63; P < .001, d = 1.16, respectively). Epworth Sleepiness Scale increased after PSD (P < .001, d = 0.86) and decreased after N20 (P < .001, d = 1.36) and N90 (P < .001, d = 2.07). N20 reduced multiple-choice reaction time (P < .001, d = 0.61). Despite performance decrement, PSD increased postexercise aspartate aminotransferase (P < .001, d = 4.16) and decreased glutathione peroxidase (P < .001, d = 4.02) compared with NSN. However, the highest performances after N90 were accompanied with lesser aspartate aminotransferase (P < .001, d = 1.74) and higher glutathione peroxidase (P < .001, d = 0.86) compared with PSD. CONCLUSIONS Napping could be preventive against performance degradation caused by sleep loss. A short nap opportunity could be more beneficial when the subsequent effort is brief and requires frequent decision making. However, a longer nap opportunity could be preventive against muscle and oxidative damage, even for higher performances.
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Sharpe EE, Booth JL, Houle TT, Pan PH, Harris LC, Aschenbrenner CA, Eisenach JC. Recovery of physical activity after cesarean delivery and its relationship with pain. Pain 2019; 160:2350-2357. [PMID: 31145215 PMCID: PMC6768712 DOI: 10.1097/j.pain.0000000000001628] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Pain and physical activity are tightly intertwined. Although their relationship has been explored in chronic pain conditions, we know little about the pattern of recovery in activity and its short- and long-term relationship with pain after surgery. We recruited 103 women undergoing elective cesarean delivery and acquired daily pain assessments and hourly steps in 98 of them for 2 months after surgery. Compliance was good, with 78% of subjects missing less than 7 days of activity. Study personnel required daily checking for compliance and 20 minutes per subject per week in study. Activity increased over the first 2 postoperative months in a log(time) manner. The slope of each modeled individual curve for activity was inversely correlated (r = -0.54; P < 0.0001) with worst daily pain. After removing these 2-month trends, pain and activity within an individual day were negatively associated with each point increase in pain being inversely associated with -119 steps (95% confidence interval [CI] = -214 to -25; P = 0.013). A patient's previous experience of pain was not associated with current activity as well as current activity was not associated with future pain scores. These data, although limited by the study of a single operation in a unique social circumstance with low risk of chronic postsurgical pain, demonstrate feasibility of measuring hourly activity for 2 months after surgery. Recovery from pain and inactivity are tightly correlated, and the negative relationship between within-day pain and activity without interday carryover relationships is in stark contrast to findings in chronic pain conditions.
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Affiliation(s)
- Emily E. Sharpe
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, MN, USA
| | - Jessica L. Booth
- Department of Anesthesiology, University of Colorado Health in Colorado Springs, Colorado Springs, CO, USA
| | - Timothy T. Houle
- Department of Anesthesiology and Perioperative Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Peter H. Pan
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Lynnette C. Harris
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | | | - James C. Eisenach
- Department of Anesthesiology, Wake Forest School of Medicine, Winston-Salem, NC, USA
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Affiliation(s)
- Shashank Dwivedi
- Department of Orthopaedic Surgery (S.D., A.B., and A.C.), Warren Alpert School of Medicine (B.G.), Brown University, Providence, Rhode Island
| | - Abigail Boduch
- Department of Orthopaedic Surgery (S.D., A.B., and A.C.), Warren Alpert School of Medicine (B.G.), Brown University, Providence, Rhode Island
| | - Burke Gao
- Department of Orthopaedic Surgery (S.D., A.B., and A.C.), Warren Alpert School of Medicine (B.G.), Brown University, Providence, Rhode Island
| | | | - Aristides I Cruz
- Department of Orthopaedic Surgery (S.D., A.B., and A.C.), Warren Alpert School of Medicine (B.G.), Brown University, Providence, Rhode Island
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DÁTTILO MURILO, ANTUNES HANNAKARENMOREIRA, GALBES NADINEMARQUESNUNES, MÔNICO-NETO MARCOS, DE SÁ SOUZA HELTON, DOS SANTOS QUARESMA MARCUSVINÍCIUSLÚCIO, LEE KILSUN, UGRINOWITSCH CARLOS, TUFIK SERGIO, DE MELLO MARCOTÚLIO. Effects of Sleep Deprivation on Acute Skeletal Muscle Recovery after Exercise. Med Sci Sports Exerc 2019; 52:507-514. [DOI: 10.1249/mss.0000000000002137] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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25
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Winett RA, Ogletree AM. Evidence-Based, High-Intensity Exercise and Physical Activity for Compressing Morbidity in Older Adults: A Narrative Review. Innov Aging 2019; 3:igz020. [PMID: 31380470 PMCID: PMC6658199 DOI: 10.1093/geroni/igz020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Indexed: 12/12/2022] Open
Abstract
Recent research in exercise science has important applications for middle-aged and older adults and points to how the programming of individual and multicomponent interventions including theory-based health behavior change strategies may be improved to compress morbidity by delaying or reducing the disabling process. High-intensity interval training and sprint interval training until recently were seen as only applicable to athletes. But recent lab-based research has adapted these interventions for even older adults and demonstrated their safety with beneficial outcomes on cardiometabolic risk factors comparable to or surpassing the usual lower- to moderate-intensity endurance training, and their potential translatability by showing the efficacy of much lower duration and frequency of training, even by systematic stair climbing. Moreover, people report positive affect while engaged in such training. For a century, resistance training was conceived as weightlifting with heavy weights required. Recent research has shown that using a higher degree of effort with lighter to moderate resistance in simple, time efficient protocols result in gains in strength and muscle mass similar to heavy resistance, as well as improvement of cardiometabolic risk factors, strength, body composition, and cognitive, affective, and functional abilities. More effort-based resistance training with moderate resistance may make resistance training more appealing and accessible to older adults. A key potential translational finding is that with correct technique and a high degree of effort, training with inexpensive, portable elastic bands, useable virtually anywhere, can provide appreciable benefits. More emphasis should be placed on long-term, translational interventions, resources, and programs that integrate interval and resistance trainings. This work may improve public health programs for middle-aged and older adults and reflects an emerging evidence base.
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Affiliation(s)
| | - Aaron M Ogletree
- Health Research and Evaluation, American Institutes for Research, Washington, District of Columbia
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26
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Hainline B, Reardon CL. Breaking a taboo: why the International Olympic Committee convened experts to develop a consensus statement on mental health in elite athletes. Br J Sports Med 2019; 53:665-666. [PMID: 31097449 DOI: 10.1136/bjsports-2019-100681] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2019] [Indexed: 12/20/2022]
Affiliation(s)
- Brian Hainline
- Sport Science Institute, National Collegiate Athletic Association (NCAA), Indianapolis, Indiana, USA
| | - Claudia L Reardon
- Department of Psychiatry, University of Wisconsin Madison School of Medicine and Public Health, Madison, Wisconsin, USA
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27
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Mental health in elite athletes: International Olympic Committee consensus statement (2019). Br J Sports Med 2019; 53:667-699. [DOI: 10.1136/bjsports-2019-100715] [Citation(s) in RCA: 349] [Impact Index Per Article: 69.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2019] [Indexed: 11/03/2022]
Abstract
Mental health symptoms and disorders are common among elite athletes, may have sport related manifestations within this population and impair performance. Mental health cannot be separated from physical health, as evidenced by mental health symptoms and disorders increasing the risk of physical injury and delaying subsequent recovery. There are no evidence or consensus based guidelines for diagnosis and management of mental health symptoms and disorders in elite athletes. Diagnosis must differentiate character traits particular to elite athletes from psychosocial maladaptations.Management strategies should address all contributors to mental health symptoms and consider biopsychosocial factors relevant to athletes to maximise benefit and minimise harm. Management must involve both treatment of affected individual athletes and optimising environments in which all elite athletes train and compete. To advance a more standardised, evidence based approach to mental health symptoms and disorders in elite athletes, an International Olympic Committee Consensus Work Group critically evaluated the current state of science and provided recommendations.
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Romdhani M, Hammouda O, Chaabouni Y, Mahdouani K, Driss T, Chamari K, Souissi N. Sleep deprivation affects post-lunch dip performances, biomarkers of muscle damage and antioxidant status. Biol Sport 2019; 36:55-65. [PMID: 30899140 PMCID: PMC6413570 DOI: 10.5114/biolsport.2018.78907] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 03/14/2018] [Accepted: 09/07/2018] [Indexed: 12/30/2022] Open
Abstract
To compare the effects of two types of partial sleep deprivation (PSD) at the beginning (PSDBN) and the end (PSDEN) of the night on mood, cognitive performances, biomarkers of muscle damage, haematological status and antioxidant responses before and after repeated-sprint exercise in the post-lunch dip. Fourteen male athletes performed the Running-based Anaerobic Sprint Test following: (i) baseline normal sleep night, (ii) PSDBN, or (iii) PSDEN in a randomized and counter-balanced order. During each condition, participants performed simple and choice reaction time tests, the Profile of Mood States, subjective sleepiness, and the Running-based Anaerobic Sprint Test. Plasma biomarkers of muscle damage, total blood count, and antioxidant activities were measured at rest and after the repeated sprint in the three conditions. PSDEN decreased Pmax (p=0.008; d=1.12), Pmean (p=0.002; d=1.33) and Pmin (p=0.006; d=1.15), whilst PSDBN decreased Pmean (p=0.04; d=0.68) and Pmin (p=0.028; d=0.58), in comparison with baseline. PSDEN exerted stronger effects on Pmax (p=0.013; d=0.74) and Pmean (p=0.048; d=0.54) than PSDBN. Moreover, PSDEN increased subjective sleepiness (p<0.001; d=1.93), while PSDBN impaired choice reaction time (p<0.001, d=1.89). Both PSD types decreased resting glutathione peroxidase (p<0.001; d=5.43, d=3.86), and increased aspartate amino-transferase levels (p<0.001; d=1.36, d=1.37) respectively for PSDEN and PSDBN. PSDEN decreased repeated-sprint performances more than PSDBN in the post-lunch dip. This could be explained by the lowered mood and resting antioxidant status and the increased inflammatory profile after PSDEN. Repeated-sprint exercise resulted in greater inflammation after PSDEN, despite the decreased physical performance. The drop of resting antioxidant defence and haemoglobin concentration after PSDEN could explain the increased sleep drive at the post-lunch dip.
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Affiliation(s)
- Mohamed Romdhani
- National observatory of sport, ONS, Tunis, Tunisia
- High institute of sport and physical education, Ksar-Said, Manouba University, Manouba, Tunisia
| | - Omar Hammouda
- Research Center on Sport and Movement (Centre de Recherches, sur le Sport et le Mouvement, CeRSM), UPL, Univ Paris Nanterre, UFR STAPS, Nanterre, France
- Faculty of medicine of Sfax, Research Unit, Molecular Bases of Human Pathology, UR12ES17, Sfax, Tunisia
| | - Yassine Chaabouni
- Department of biochemistry, CHU Ibn Jazzar, Kairouan, Tunisia
- Laboratory of Analysis, Treatment and Valorization of Pollutants of the Environment and Products (LATVEP) Faculty of pharmacy, University of Monastir, 5000, Monastir Tunisia
| | - Kacem Mahdouani
- Department of biochemistry, CHU Ibn Jazzar, Kairouan, Tunisia
- Laboratory of Analysis, Treatment and Valorization of Pollutants of the Environment and Products (LATVEP) Faculty of pharmacy, University of Monastir, 5000, Monastir Tunisia
| | - Tarak Driss
- Research Center on Sport and Movement (Centre de Recherches, sur le Sport et le Mouvement, CeRSM), UPL, Univ Paris Nanterre, UFR STAPS, Nanterre, France
| | - Karim Chamari
- Athlete Health and Performance Research Centre, ASPETAR, Qatar Orthopedic and Sports Medicine Hospital, Doha, Qatar
| | - Nizar Souissi
- National observatory of sport, ONS, Tunis, Tunisia
- High institute of sport and physical education, Ksar-Said, Manouba University, Manouba, Tunisia
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Stevens CJ, Thornton HR, Fowler PM, Esh C, Taylor L. Long-Haul Northeast Travel Disrupts Sleep and Induces Perceived Fatigue in Endurance Athletes. Front Physiol 2018; 9:1826. [PMID: 30618835 PMCID: PMC6306418 DOI: 10.3389/fphys.2018.01826] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 12/06/2018] [Indexed: 11/13/2022] Open
Abstract
Introduction: Long-haul transmeridian travel is known to cause disruptions to sleep and immune status, which may increase the risk of illness. Aim: This study aimed to determine the effects of long-haul northeast travel for competition on sleep, illness and preparedness in endurance athletes. Methods: Twelve trained (13.8 ± 3.2 training h/week) masters (age: 48 ± 14 years) triathletes were monitored for sleep (quantity via actigraphy and quality via self-report), mucosal immunity (salivary immunoglobulin-A) and stress (salivary cortisol) as well as self-reported illness, fatigue, recovery and preparedness. Baseline measures were recorded for 2 weeks prior to travel for all variables except for the saliva samples, which were collected on three separate days upon waking. Participants completed normal training during the baseline period. Measures were subsequently recorded before, during and after long-haul northeast travel from the Australian winter to the Hawaiian summer, and in the lead up to an Ironman 70.3 triathlon. Results: All comparisons are to baseline. There was a most likely decrease in sleep duration on the over-night flight (-4.8 ± 1.2 h; effect size; ±90% confidence limits = 3.06; ±1.26) and a very likely increase in sleep duration on the first night after arrival (0.7 ± 1.0 h; 1.15; ±0.92). After this time, sleep duration returned to baseline for several days until it was very likely decreased on the night prior to competition (-1.2 ± 1.0 h; 1.18; ±0.93). Nap duration was likely increased on the first day after arrival (36 ± 65 min; 3.90; ±3.70). There was also a likely increase in self-reported fatigue upon waking after the first night in the new destination (1.1 ± 1.6 AU; 0.54; ±0.41) and there were three athletes (25%) who developed symptoms of illness 3-5 days after arrival. There were no changes in sleep quality or mucosal measures across study. Discussion: Long-haul northeast travel from a cool to a hot environment had substantial influences on sleep and self-reported fatigue, but these alterations had returned to pre-departure baseline 48 h after arrival. Endurance athletes undertaking similar journeys may benefit from optimizing sleep hygiene, especially on the first 2 days after arrival, or until sleep duration and fatigue levels return to normal.
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Affiliation(s)
- Christopher J. Stevens
- School of Health and Human Sciences, Southern Cross University, Coffs Harbour, NSW, Australia
- Centre for Athlete Development, Experience and Performance, Southern Cross University, Coffs Harbour, NSW, Australia
| | - Heidi R. Thornton
- Newcastle Knights Rugby League Club, Newcastle, NSW, Australia
- La Trobe Sport and Exercise Medicine Research Centre, La Trobe University, Melbourne, VIC, Australia
| | - Peter M. Fowler
- School of Exercise and Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - Christopher Esh
- Athlete Health and Performance Research Centre, ASPETAR Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - Lee Taylor
- Athlete Health and Performance Research Centre, ASPETAR Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, United Kingdom
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Effects of High vs. Low Glycemic Index of Post-Exercise Meals on Sleep and Exercise Performance: A Randomized, Double-Blind, Counterbalanced Polysomnographic Study. Nutrients 2018; 10:nu10111795. [PMID: 30453682 PMCID: PMC6267571 DOI: 10.3390/nu10111795] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2018] [Revised: 10/29/2018] [Accepted: 11/14/2018] [Indexed: 02/02/2023] Open
Abstract
The aim of the current study was to investigate the effect of the glycemic index of post-exercise meals on sleep quality and quantity, and assess whether those changes could affect the next day’s exercise performance. Following a baseline/familiarization phase, 10 recreationally trained male volunteers (23.2 ± 1.8 years) underwent two double-blinded, randomized, counterbalanced crossover trials. In both trials, participants performed sprint interval training (SIT) in the evening. Post-exercise, participants consumed a meal with a high (HGI) or low (LGI) glycemic index. Sleep parameters were assessed by a full night polysomnography (PSG). The following morning, exercise performance was evaluated by the countermovement jump (CMJ) test, a visual reaction time (VRT) test and a 5-km cycling time trial (TT). Total sleep time (TST) and sleep efficiency were greater in the HGI trial compared to the LGI trial (p < 0.05), while sleep onset latency was shortened by four-fold (p < 0.05) and VRT decreased by 8.9% (p < 0.05) in the HGI trial compared to the LGI trial. The performance in both 5-km TT and CMJ did not differ between trials. A moderate to strong correlation was found between the difference in TST and the VRT between the two trials (p < 0.05). In conclusion, this is the first study to show that a high glycemic index meal, following a single spring interval training session, can improve both sleep duration and sleep efficiency, while reducing in parallel sleep onset latency. Those improvements in sleep did not affect jumping ability and aerobic endurance performance. In contrast, the visual reaction time performance increased proportionally to sleep improvements.
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Nedelec M, Aloulou A, Duforez F, Meyer T, Dupont G. The Variability of Sleep Among Elite Athletes. SPORTS MEDICINE-OPEN 2018; 4:34. [PMID: 30054756 PMCID: PMC6063976 DOI: 10.1186/s40798-018-0151-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 07/10/2018] [Indexed: 12/30/2022]
Abstract
Practicing sport at the highest level is typically accompanied by several stressors and restrictions on personal life. Elite athletes’ lifestyle delivers a significant challenge to sleep, due to both the physiological and psychological demands, and the training and competition schedules. Inter-individual variability of sleep patterns (e.g., sleep requirements, chronotype) may have important implications not only for recovery and training schedules but also for the choice of measures to possibly improve sleep. This article provides a review of the current available literature regarding the variability of sleep among elite athletes and factors possibly responsible for this phenomenon. We also provide methodological approaches to better address the inter-individual variability of sleep in future studies with elite athletes. There is currently little scientific evidence supporting a specific influence of one particular type of sport on sleep; sleep disorders may be, however, more common in strength/power and contact sports. Sleep behavior may notably vary depending on the athlete’s typical daily schedule. The specificity of training and competition schedules possibly accounts for the single most influential factor leading to inconsistency in sleep among elite athletes (e.g., “social jet lag”). Additionally, athletes are affected by extensive exposure to electric light and evening use of electronic media devices. Therefore, the influence of ordinary sleep, poor sleep, and extended sleep as important additional contributors to training load should be studied. Future experimental studies on sleep and elite sport performance should systematically report the seasonal phase. Boarding conditions may provide a good option to standardize as many variables as possible without the inconvenience of laboratory. The use of interdisciplinary mixed-method approaches should be encouraged in future studies on sleep and elite sport. Finally, high inter- and intra-individual variability in the athletes’ sleep characteristics suggests a need for providing individual responses in addition to group means.
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Affiliation(s)
- Mathieu Nedelec
- French Institute of Sport (INSEP), Research Department, Laboratory Sport, Expertise and Performance (EA 7370), 11 Avenue du Tremblay, 75012, Paris, France.
| | - Anis Aloulou
- French Institute of Sport (INSEP), Research Department, Laboratory Sport, Expertise and Performance (EA 7370), 11 Avenue du Tremblay, 75012, Paris, France
| | - François Duforez
- Centre du Sommeil, Hotel Dieu de Paris, 1 Place du Parvis Notre Dame, 75004, Paris, France
| | - Tim Meyer
- Institute of Sport and Preventive Medicine, Saarland University, GEB. B82, 66123, Saarbrucken, Germany
| | - Gregory Dupont
- French Institute of Sport (INSEP), Research Department, Laboratory Sport, Expertise and Performance (EA 7370), 11 Avenue du Tremblay, 75012, Paris, France
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