Prevalence of poor sleep quality in athletes before competition

Andrade, Alexandro; Bevilacqua, Guilherme Guimarães; Casagrande, Pedro de Orleans; Brandt, Ricardo; Coimbra, Danilo Reis

doi:10.1080/00913847.2020.1784688

Cited by 9 publications

(12 citation statements)

References 33 publications

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“…During the observation period, none of the participants tested positive for COVID-19 and variations in health parameters were scarce; only sleep quality and level of recovery displayed slight variation. In line with previous studies reporting impaired sleep quality prior to competitions, these variations are likely attributable to tension and fatigue before and after games 17 , 18 . The weekly subjectively perceived risk of infection, which was included as a proxy for anxiety, significantly deviated from the weekly average when a COVID-19 case occurred in a manager in one of the clubs.…”

Section: Discussionsupporting

confidence: 90%

A case report of COVID-19 monitoring in the Austrian professional football league

Zee-Neuen

Schaffler-Schaden

Herfert

et al. 2021

Sci Rep

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Since the beginning of the COVID -19 pandemic, many contact sport teams are facing major challenges to safely continue training and competition. We present the design and implementation of a structured monitoring concept for the Austrian national football league. 146 professional players from five clubs of the professional Austrian football league were monitored for a period of 12 weeks. Subjective health parameters, PCR- test results and data obtained from a geo-tracking app were collected. Simulations modelling the consequences of a COVID-19 case with increasing reproduction number were computed. No COVID -19 infection occurred during the observation period in the players. Infections in the nearer surroundings lead to increased perceived risk of infection. Geo tracking was particularly hindered due to technical problems and reluctance of users. Simulation models suggested a hypothetical shut-down of all training and competition activities. A structured monitoring concept can help to continue contact sports safely in times of a pandemic. Cooperation of all involved is essential. Trial registration: ID: DRKS00022166 15/6/2020 https://www.who.int/ictrp/search/en/.

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Section: Discussionsupporting

confidence: 90%

A case report of COVID-19 monitoring in the Austrian professional football league

Zee-Neuen

Schaffler-Schaden

Herfert

et al. 2021

Sci Rep

View full text Add to dashboard Cite

show abstract

“…In line with previous studies reporting impaired sleep quality prior to competitions, these variations are likely attributable to tension and fatigue before and after games [10,11]. The weekly subjectively perceived risk of infection, which was included as a proxy for anxiety, significantly deviated from the weekly average when a COVID-19 case occurred in a manager in one of the clubs.…”

Section: Discussionsupporting

confidence: 81%

Team contact sports in times of the COVID-19 pandemic- a scientific concept for the Austrian football league

Zee-Neuen

Schaffler-Schaden

Herfert³

et al. 2020

Preprint

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BackgroundSince the beginning of the COVID -19 pandemic, many contact sport teams are facing major challenges to safely continue training and competition.ObjectiveWe present the design and implementation of a structured monitoring concept for the Austrian national football leagueMethods146 professional players from five clubs of the professional Austrian football league were monitored for a period of 12 weeks. Subjective health parameters, PCR- test results and data obtained from a geo-tracking app were collected. Simulations modelling the consequences of a COVID-19 case with increasing reproduction number were computed.ResultsNo COVID-19 infection occurred during the observation period in the players. Infections in the nearer surroundings lead to increased perceived risk of infection. Geo tracking was particularly hindered due to technical problems and reluctance of users. Simulation models suggested a hypothetical shut-down of all training and competition activities.ConclusionsA structured monitoring concept can help to continue contact sports safely in times of a pandemic. Cooperation of all involved is essential.Trial registrationID: DRKS00022166 15/6/2020 https://www.who.int/ictrp/search/en/Key Points-The results of this study can inform the development of future prevention and monitoring strategies in professional football and beyond, potentially serving as a blueprint for the safe continuation of sports and physical activity, across a broad range of settings, during and following a pandemic such as COVID-19.-Health parameters should be digitally recorded and closely monitored to enable quick response in case of a COVID-19 infection.

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“…Stress and anxiety [11], medical conditions/illness [12], and genetic traits [13,14] can also contribute to sleep loss. Certain populations, including professional athletes [15][16][17][18][19][20][21][22][23][24], shift workers [25] and military personnel [26], appear particularly susceptible to sleep loss. For athletes, sleep loss may be exacerbated by early morning training sessions [27,28], training or competing at altitude (> 2000 m) [29], travel (late night and early morning departures) [30,31], and the use of caffeine as an ergogenic aid [32].…”

Section: Methodsmentioning

confidence: 99%

Effects of Acute Sleep Loss on Physical Performance: A Systematic and Meta-Analytical Review

et al. 2022

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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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Prevalence of poor sleep quality in athletes before competition

Cited by 9 publications

References 33 publications

A case report of COVID-19 monitoring in the Austrian professional football league

A case report of COVID-19 monitoring in the Austrian professional football league

Team contact sports in times of the COVID-19 pandemic- a scientific concept for the Austrian football league

Effects of Acute Sleep Loss on Physical Performance: A Systematic and Meta-Analytical Review

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