Studies on improvement of sleep in elite Japanese athletes

2017 Fiscal Year Final Research Report

• Project/Area Number: 26350827
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Sports science
• Research Institution: National Agency for the Advancement of Sports and Health
• Principal Investigator: Hoshikawa Masako 独立行政法人日本スポーツ振興センター国立スポーツ科学センター, スポーツ研究部, 先任研究員 (60284923)
• Research Collaborator: UCHIDA Sunao ; DOHI Michiko ; HIRANO Yuichi
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: アスリート / 睡眠

Outline of Final Research Achievements

To clarify the prevalence of poor sleep quality and　its associated factors among elite Japanese athletes, the questionnaire study was conducted. Twenty-eight percent of the athletes were classified as poor sleepers. Their poor sleep quality was associated with five factors.
To examine a simple evaluating system of the sleep under hypoxia, we compared among the data from polysomnography, actigraphy, sheet-sensor, and peripheral-artery-tonometry. Though the convenience that peripheral-artery-tonometry can pick up respiratory disturbances under hypoxia, sleep/wake identification from the actigraph and the sheet-sensor were similar from the polysomnograph.
To evaluate the effects of pre-flight circadian phase-shifting approach on sleep after eastward transition, two athletes gradually advanced their sleep–wake schedules, took ramelteon 5.5 h before their bedtimes, and were exposed to bright light in the early morning. The approach improved their sleep in the destination　areas.

Free Research Field

運動生理学