Original title: The Influence of Sleep and Autonomic Recovery on Performance in World-Class Swimmers at Major Competitions: The Qualifying Trials, World Championships, and Olympic Games
Researchers tracked eight Olympic swimmers around three major events using a ring that measures sleep and heart signals. At the Olympics, their sleep was less efficient during competition, their total sleep score fell, and their resting heart rate rose. But the researchers found no statistically significant link between these measures and each swimmer’s performance. With only eight swimmers, the study may have been too small to detect a real link.
Imagine a swimmer checking how rested they feel before a big race. A tough event can leave them sleeping less soundly and with a faster resting pulse, but that does not tell you how fast they will swim. In this paper, those signs of rest and strain are the sleep and heart measures, and the race result is the performance being compared. The researchers saw changes around the Olympics, but no clear link between those signs and each swimmer’s performance.
Elite swimmers face demanding competition schedules, and sleep and recovery are often watched as clues to how the body is coping. In this small study, Olympic competition coincided with changes in sleep and heart measures, but those measures did not reliably indicate how an individual swimmer performed.
Only eight swimmers were monitored, which limits the study's power to detect links between sleep, autonomic measures, and performance. The study does not establish that Olympic competition caused the measured changes, or that the findings apply to other athletes or events.
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The Influence of Sleep and Autonomic Recovery on Performance in World-Class Swimmers at Major Competitions: The Qualifying Trials, World Championships, and Olympic Games — Lidia Barragán Hernández, Carmen Crespo, Sérgio J. Ibáñez et al. — Sports — doi:10.3390/sports14100426
Abstract licence: CC BY
Explanation generated by Synthesis from the abstract — it is not the original paper.