Abstract
BackgroundThe amount, quality, and timing of sleep are considered important for athletes’ ability to train, maximize training responses, and recover. However, some research has shown that elite athletes do not obtain sufficient sleep. Based on this background, researchers recently started to assess and manage sleep in elite athletes.The purpose of this study was to clarify the prevalence of poor sleep quality and its associated factors amongst elite Japanese athletes.MethodsEight hundred and ninety-one candidates for the 17th Asian Games Incheon 2014, who were over 20 years old, participated in this study. They completed a questionnaire that included the Pittsburgh Sleep Quality Index (PSQI), Epworth Sleepiness Scale, two-question case-finding instruments, and a checklist for sleep hygiene. Data from 817 of the 891 athletes (91.7%) with no missing values were analyzed.ResultsThe mean time in bed was 7 h and 29 min. Two hundred and twenty-nine (28.0%) athletes showed a PSQI global score above the clinical criteria. A multiple logistic analysis revealed that sleep quality was significantly associated with five factors: “time in bed,” “eating breakfast every morning,” “avoiding the use of electronic devices (PC, smartphone, etc.) just before bedtime,” “depressive mood”, and “not thinking about troubles while in bed.” Forty percent of athletes reported they had been informed by someone about “snoring loudly” and/or “leg twitching or jerking during sleep.”ConclusionsThe results of this study demonstrate that 28% of the athletes showed the PSQI score above the cutoff for poor sleep quality (> 5.5), which suggests that there may be a high prevalence of poor sleep quality in this population of athletes. To improve athletes’ sleep, the five factors associated with sleep quality should be emphasized in athletes’ sleep education. Furthermore, in medical evaluations of athletes, it may be desirable to include screening for sleep disorders.
Highlights
The amount, quality, and timing of sleep are considered important for athletes’ ability to train, maximize training responses, and recover
The Prevalence and Factors Associated with Poor Sleep Quality In the present study, we described the characteristics of the sleeping habits of elite Japanese athletes, investigated
Our results suggest that the time in bed of elite Japanese athletes is inconsistent with their recommendations
Summary
The amount, quality, and timing of sleep are considered important for athletes’ ability to train, maximize training responses, and recover. As represented by the Olympic motto “faster, higher, stronger,” Olympic athletes must keep improving their athletic performance To achieve this, they increase their frequency, volume, and intensity of training. Some research has shown that elite athletes do not obtain an adequate amount of sleep and that the prevalence of poor sleep quality is high (> 20%) [2,3,4]. Based on this background, researchers recently started to assess and manage sleep in elite athletes [3, 4]
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