| Project/Area Number |
18K17814
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 59020:Sports sciences-related
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| Research Institution | National Agency for the Advancement of Sports and Health |
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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, スポーツ科学・研究部, 主任研究員 (60284923)
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| Project Period (FY) |
2018-04-01 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | アスリート / 睡眠 / 時差 / アクチグラフ |
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| Outline of Final Research Achievements |
① I demonstrated the characteristics of athletes' usual sleep based on actigraph data from 111 people. ②A study of 31 athletes found that the training start time was associated with median sleep time and the MSFsc of the Munich Chronotype Questionnaire. ③ When subjects were exposed to high-intensity light for 20-30 minutes immediately after waking up, daytime sleepiness, one of POMS index (vigor), jump height, and reaction time were significantly improved.
④ The participants going on an expedition to a country with an 8-hour time differences, were exposed to light immediately after their waking and sleep schedule shifts by 30 minutes from 4 days before their departure. The increase in sleep duration was observed after their arrival (in USA).
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| Academic Significance and Societal Importance of the Research Achievements |
①日本のアスリートの睡眠習慣がどのような状態か、海外のハイパフォーマンスアスリートと差があるのか、これまで明らかではなかったが、一般人で知られているほどの大きな差はなかった。②ミュンヘンクロノタイプ質問紙で算出されるクロノタイプの指標は、アスリートのトレーニングスケジュールの影響を受けていると考えられた。
③適切なタイミングでの光照射は、日本での日中のパフォーマンスや気分を改善するのに役立つほか、睡眠スケジュールのシフトと組み合わせることによって、時差のある国での睡眠の悪化を軽減できる可能性がある。
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