Hurdiel Rémy, Riedy Samantha M, Millet Gregoire P, Mauvieux Benoit, Pezé Thierry, Elsworth-Edelsten Charlotte, Martin Dudoignon, Zunquin Gauntier, Dupont Grégory
a Unité de Recherche Pluridisciplinaire Sport , University of the Littoral Opale Coast , Dunkerque , France.
b Sleep and Performance Research Center, Elson S. Floyd College of Medicine , Washington State University , Spokane , WA , USA.
Res Sports Med. 2018 Oct-Dec;26(4):482-489. doi: 10.1080/15438627.2018.1492401. Epub 2018 Jul 4.
Ninety-two runners completed the study during a 168 km mountain ultramarathon (MUM). Sleepiness, self-reported sleep duration, and cognitive performance were assessed the day before the race and up to eight checkpoints during the race. Sleepiness was assessed using the Karolinska Sleepiness Scale. Cognitive performance was also assessed using the Digital Symbol Substitution Task (DSST). Runner reported 23.40 ± 22.20 minutes of sleep (mean ± SD) during the race (race time: 29.38 to 46.20 hours). Sleepiness and cognitive performance decrements increased across this race, and this was modulated by time-of-day with higher sleepiness and greater performance decrements occurring during the early morning hours. Runners who slept on the course prior to testing had poorer cognitive performance, which may suggest that naps on the course were taken due to extreme exertion. This study provides evidence that cognitive performance deficits and sleepiness in MUM are sensitive to time into race and time-of-day.
92名跑步者在一场168公里的山地超级马拉松（MUM）比赛中完成了这项研究。在比赛前一天以及比赛期间的多达八个检查点对嗜睡程度、自我报告的睡眠时间和认知表现进行了评估。使用卡罗林斯卡嗜睡量表评估嗜睡程度。还使用数字符号替换任务（DSST）评估认知表现。跑步者报告在比赛期间睡眠时间为23.40±22.20分钟（平均值±标准差）（比赛时间：29.38至46.20小时）。在这场比赛中，嗜睡程度和认知表现的下降有所增加，并且这受到一天中不同时间的调节，清晨时段嗜睡程度更高，表现下降幅度更大。在测试前在赛道上睡觉的跑步者认知表现较差，这可能表明在赛道上小睡是由于极度疲劳所致。这项研究提供了证据，表明MUM中的认知表现缺陷和嗜睡程度对比赛进行时间和一天中的时间敏感。
