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https://www.readbyqxmd.com/read/29776619/poor-sleep-quality-and-insufficient-sleep-of-a-collegiate-student-athlete-population
#1
Cheri D Mah, Eric J Kezirian, Brandon M Marcello, William C Dement
OBJECTIVE: Poor and inadequate sleep negatively impact cognitive and physical functioning and may also affect sports performance. The study aim is to examine sleep quality, sleep duration, and daytime sleepiness in collegiate student-athletes across a wide range of sports. DESIGN: Questionnaire. SETTING: University setting. PARTICIPANTS: 628 athletes across 29 varsity teams at Stanford University. MEASUREMENTS: Athletes completed a questionnaire inquiring about sleep quality via a modified Pittsburgh Sleep Quality Index (PSQI), sleep duration, and daytime sleepiness via Epworth Sleepiness Scale...
June 2018: Sleep Health
https://www.readbyqxmd.com/read/29758571/effects-of-a-20-min-nap-post-normal-and-jet-lag-conditions-on-p300-components-in-athletes
#2
Elisabeth Petit, Hubert Bourdin, Grégory Tio, Omer Yenil, Emmanuel Haffen, Fabienne Mougin
Post-lunch sleepiness belongs to biological rhythms. Athletes take a nap to counteract afternoon circadian nadir, in prevision of disturbed sleep. This study examined the effects of brief post-lunch nap on vigilance in young and healthy athletes. The P300 components, physiological and cognitive performances were assessed either after nap or rest, following a night of normal sleep (NSC) or simulated jet lag condition (5-h advance-JLC). P300 wave is the positive deflection at about 300 ms in response to a rare stimulus, representing higher information processing...
May 14, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29742118/sleep-habits-and-strategies-of-ultramarathon-runners
#3
Tristan Martin, Pierrick J Arnal, Martin D Hoffman, Guillaume Y Millet
Among factors impacting performance during an ultramarathon, sleep is an underappreciated factor that has received little attention. The aims of this study were to characterize habitual sleep behaviors in ultramarathon runners and to examine strategies they use to manage sleep before and during ultramarathons. Responses from 636 participants to a questionnaire were considered. This population was found to sleep more on weekends and holidays (7-8 h to 8-9 h) than during weekdays (6-7 h to 7-8 h; p < 0.001)...
2018: PloS One
https://www.readbyqxmd.com/read/29658807/effect-of-bright-light-therapy-on-delayed-sleep-wake-cycle-and-reaction-time-of-athletes-participating-in-the-rio-2016-olympic-games
#4
João Paulo P Rosa, Andressa Silva, Dayane F Rodrigues, Mário Antônio Simim, Fernanda V Narciso, Sergio Tufik, Jorge J Bichara, Sebastian Rafael D Pereira, Sidney C Da Silva, Marco Tulio de Mello
This study investigated the effect of using an artificial bright light on the entrainment of the sleep/wake cycle as well as the reaction times of athletes before the Rio 2016 Olympic Games. A total of 22 athletes from the Brazilian Olympic Swimming Team were evaluated, with the aim of preparing them to compete at a time when they would normally be about to go to bed for the night. During the 8-day acclimatization period, their sleep/wake cycles were assessed by actigraphy, with all the athletes being treated with artificial light therapy for between 30 and 45 min (starting at day 3)...
April 16, 2018: Chronobiology International
https://www.readbyqxmd.com/read/29651858/sleep-related-issues-for-recovery-and-performance-in-athletes
#5
Sarah Kölling, Rob Duffield, Daniel Erlacher, Ranel Venter, Shona L Halson
The body of research that reports the relevance of sleep in high-performance sports is growing steadily. While the identification of sleep cycles and diagnosis of sleep disorders is limited to lab-based assessment via polysomnography, the development of activity-based devices estimating sleep patterns provides greater insight into the sleep behaviour of athletes in ecological settings. Overall, small sleep quantity and/or poor quality appears to exist in many athletic populations, though this may be related to training and competition context...
April 13, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29605797/self-reported-sleep-duration-affects-tandem-gait-but-not-steady-state-gait-outcomes-among-healthy-collegiate-athletes
#6
David R Howell, Brant Berkstresser, Francis Wang, Thomas A Buckley, Rebekah Mannix, Alexandra Stillman, William P Meehan
BACKGROUND: Sleep deficits are associated with motor and cognitive function deficits, even in the absence of a recent concussion. RESEARCH QUESTION: Does the amount of self-reported sleep prior to pre-season concussion testing affect single-task and dual-task instrumented steady-state gait and timed tandem gait test performance? METHODS: One hundred and fourteen healthy collegiate athletes (mean age 18.8 ± 0.7 years; 60% female) reported the amount of sleep they received during the prior night and completed a timed tandem gait test and an instrumented assessment of steady-state gait in both single-task and dual-task conditions...
March 26, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29502302/sleep-duration-body-composition-dietary-profile-and-eating-behaviours-among-children-and-adolescents-a-comparison-between-portuguese-acrobatic-gymnasts
#7
Maria-Raquel G Silva, Hugo-Henrique Silva, Teresa Paiva
Sleep, body composition and dietary intake are crucial for athletes' health and performance but have never been investigated in acrobatic gymnasts. Thus, this study aimed to evaluate sleep, body composition, dietary intake and eating behaviours of acrobatic gymnasts. Using a cross-sectional study, 82 Portuguese acrobatic gymnasts (12.8 ± 3.1 years, 61 females and 21 males) were evaluated during the competitive period to collect training data, sleep duration, body composition, dietary intake and eating behaviours before, during and after practices...
March 3, 2018: European Journal of Pediatrics
https://www.readbyqxmd.com/read/29482452/sleep-and-stress-hormone-responses-to-training-and-competition-in-elite-female-athletes
#8
Shannon O'Donnell, Steve Bird, Gregory Jacobson, Matthew Driller
Stress hormone and sleep differences in a competition versus training setting are yet to be evaluated in elite female team-sport athletes. The aim of the current study was to evaluate salivary cortisol and perceptual stress markers during competition and training and to determine the subsequent effects on sleep indices in elite female athletes. Ten elite female netball athletes (mean ± SD; age: 23 ± 6 years) had their sleep monitored on three occasions; following one netball competition match (MATCH), one netball match simulation session (TRAIN), and one rest day (CONTROL)...
February 26, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29387449/-recover-quicker-train-harder-and-increase-flexibility-massage-therapy-for-elite-paracyclists-a-mixed-methods-study
#9
Ann Blair Kennedy, Nirav Patil, Jennifer L Trilk
Objectives: Massage therapy (MT) enhances recovery by reducing pain and fatigue in able-bodied endurance athletes. In athletes with disabilities, no studies have examined similar MT outcomes, yet participation in sport has increased by >1000 athletes from 1996 to 2016 Olympic games. We examined the effect of MT on pain, sleep, stress, function and performance goals on the bike, as well as quality of life off the bike, in elite paracycling athletes. Methods: This is a quasi-experimental, convergent, parallel, mixed-methods design study of one team, with nine paracycling participants, in years 2015 and 2016...
2018: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29384434/the-psychomotor-vigilance-test-a-comparison-of-different-test-durations-in-elite-athletes
#10
Maddison J Jones, Ian C Dunican, Kevin Murray, Peter Peeling, Brian Dawson, Shona Halson, Joanna Miller, Peter R Eastwood
The 10-min Psychomotor Vigilance Test (PVT-10) is regarded as the gold-standard for assessing vigilant attention following sleep loss; however, other studies have investigated whether shorter versions of the test elicit similar results to the PVT-10. The present study compared the PVT-10 with 3-min (PVT-3) and 5-min (PVT-5) versions of the test in elite female basketball players. Athletes performed all three tests in the morning and evening for seven consecutive days. Response speed (mean reciprocal reaction time; mean 1/RT), number of errors and number of lapses were determined for each test and time point...
January 31, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29352373/sleep-interventions-designed-to-improve-athletic-performance-and-recovery-a-systematic-review-of-current-approaches
#11
REVIEW
Daniel Bonnar, Kate Bartel, Naomi Kakoschke, Christin Lang
BACKGROUND: Athletes experience various situations and conditions that can interfere with their sleep, which is crucial for optimal psychological and physiological recovery as well as subsequent performance. Conventional sleep screening and intervention approaches may not be efficacious for athletes given their lifestyle, the demands of training and travel associated with interstate/international competition. OBJECTIVES: The present systematic review aimed to summarize and evaluate sleep intervention studies targeting subsequent performance and recovery in competitive athletes...
March 2018: Sports Medicine
https://www.readbyqxmd.com/read/29313445/body-composition-metabolism-sleep-psychological-and-eating-patterns-of-overtraining-syndrome-results-of-the-eros-study-eros-profile
#12
Flavio A Cadegiani, Claudio E Kater
Overtraining syndrome (OTS) is caused by an imbalance between training, nutrition and resting, and leads to decreased performance and fatigue; however, the precise underlying triggers of OTS remain unclear. This study investigated the body composition, metabolism, eating, sleeping patterns and mood states among participants with OTS. Selected participants were divided into OTS-affected athletes (OTS, n = 14), healthy athletes (ATL, n = 25), and healthy non-physically active controls (NCS, n = 12). Compared to ATL, OTS showed decreased sleep quality (p = 0...
January 9, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29247273/live-high-train-low-guided-by-daily-heart-rate-variability-in-elite-nordic-skiers
#13
Laurent Schmitt, Sarah J Willis, Anthony Fardel, Nicolas Coulmy, Gregoire P Millet
PURPOSE: To analyze if live high-train low (LHTL) effectiveness is improved when daily training is guided by heart rate variability (HRV). METHODS: Twenty-four elite Nordic skiers took part in a 15-day LHTL study and were randomized into a HRV-guided training hypoxic group (H-HRV, n = 9, sleeping in normobaric hypoxia, FiO2  = 15.0%) and two predefined training groups sleeping either in hypoxia (H, n = 9, FiO2  = 15.0%) or normoxia (N, n = 6)...
February 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/29198093/-strenuous-and-prolonged-exercise-and-upper-respiratory-tract-infection-treatment-or-threat
#14
REVIEW
Danit Atias-Varon, Yuval Heled
Prolonged and strenuous exercise may lead to changes in the immune system function and to temporary suppression in defense against pathogens. These changes likely increase the risk of those engaging in prolonged and strenuous physical activity to develop upper respiratory tract infection and to reduce the level of performance. On the other hand, it appears that moderate physical activity reduces the risk of upper respiratory tract infection. Various populations, such as professional athletes and soldiers in combat units, who engage in daily strenuous exercise, may therefore be a high risk group...
November 2017: Harefuah
https://www.readbyqxmd.com/read/29189340/influence-of-postconcussion-sleep-duration-on-concussion-recovery-in-collegiate-athletes
#15
Nicole L Hoffman, Michelle L Weber, Steven P Broglio, Michael McCrea, Thomas W McAllister, Julianne D Schmidt
OBJECTIVE: To determine whether decreased sleep duration postconcussion influences days to asymptomatic and assessment of performance throughout recovery. DESIGN: Prospective. SETTING: Institutional Clinical Research Laboratory. PATIENTS: Four hundred twenty-three collegiate athletes were diagnosed with concussion. INTERVENTIONS: Multidimensional concussion assessment battery was conducted at baseline, within 24 to 48 hours, daily [2-4 days postinjury (PI); symptoms only], once asymptomatic, and after return-to-play...
November 16, 2017: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/29187343/an-ehealth-application-of-self-reported-sports-related-injuries-and-illnesses-in-paralympic-sport-pilot-feasibility-and-usability-study
#16
Kristina Fagher, Jenny Jacobsson, Örjan Dahlström, Toomas Timpka, Jan Lexell
BACKGROUND: Sport participation is associated with a risk of sports-related injuries and illnesses, and Paralympic athletes' additional medical issues can be a challenge to health care providers and medical staff. However, few prospective studies have assessed sports-related injuries and illnesses in Paralympic sport (SRIIPS) over time. Advances in mobile phone technology and networking systems offer novel opportunities to develop innovative eHealth applications for collection of athletes' self-reports...
November 29, 2017: JMIR Human Factors
https://www.readbyqxmd.com/read/29161185/medications-for-sleep-schedule-adjustments-in-athletes
#17
REVIEW
Matthew B Baird, Irfan M Asif
CONTEXT: Sleep schedule adjustments are common requirements of modern-day athletes. Many nonpharmacologic and pharmacologic strategies exist to facilitate circadian rhythm shifts to maximize alertness and performance during competition. This review summarizes the evidence for commonly used pharmacologic agents and presents recommendations for the sports medicine provider. EVIDENCE ACQUISITION: MEDLINE searches were performed using the following keywords: sleep aids, circadian rhythm adjustment, athletes and sleep, caffeine and sports, melatonin and athletes, and sleep aids and sports...
January 2018: Sports Health
https://www.readbyqxmd.com/read/29135639/sleep-and-athletic-performance
#18
REVIEW
Andrew M Watson
Sleep is an essential component of health and well-being, with significant impacts on physical development, emotional regulation, cognitive performance, and quality of life. Along with being an integral part of the recovery and adaptive process between bouts of exercise, accumulating evidence suggests that increased sleep duration and improved sleep quality in athletes are associated with improved performance and competitive success. In addition, better sleep may reduce the risk of both injury and illness in athletes, not only optimizing health but also potentially enhancing performance through increased participation in training...
November 2017: Current Sports Medicine Reports
https://www.readbyqxmd.com/read/29120225/descriptive-values-for-dancers-on-baseline-concussion-tools
#19
Lauren McIntyre, Marc Campo
CONTEXT:   Capturing baseline data before a concussion can be a valuable tool in individualized care. However, not all athletes, including dancers, have access to baseline testing. When baseline examinations were not performed, clinicians consult normative values. Dancers are unique athletes; therefore, describing values specific to dancers may assist those working with these athletes in making more informed decisions. OBJECTIVE:   To describe values for key concussion measures of dancers...
November 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/29114564/the-effect-of-pretest-exercise-on-baseline-computerized-neurocognitive-test-scores
#20
Alec Pawlukiewicz, Aaron M Yengo-Kahn, Gary Solomon
Background: Baseline neurocognitive assessment plays a critical role in return-to-play decision making following sport-related concussions. Prior studies have assessed the effect of a variety of modifying factors on neurocognitive baseline test scores. However, relatively little investigation has been conducted regarding the effect of pretest exercise on baseline testing. Purpose/Hypothesis: The aim of our investigation was to determine the effect of pretest exercise on baseline Immediate Post-Concussion Assessment and Cognitive Testing (ImPACT) scores in adolescent and young adult athletes...
October 2017: Orthopaedic Journal of Sports Medicine
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