2022 Fiscal Year Final Research Report
The effects of endurance training with repeated changes in muecle glycogen content
Project/Area Number |
19K24303
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Research Category |
Grant-in-Aid for Research Activity Start-up
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Allocation Type | Multi-year Fund |
Review Section |
0909:Sports sciences, physical education, health sciences, and related fields
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Research Institution | National Agency for the Advancement of Sports and Health |
Principal Investigator |
Kojima Chihiro 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, 契約研究員 (00845878)
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Project Period (FY) |
2019-08-30 – 2023-03-31
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Keywords | トレーニング / 筋グリコーゲン量 / アスリート |
Outline of Final Research Achievements |
The purpose of present study was to investigate effective exercise to recover muscle glycogen content. Male triathletes completed two trials, consisting of rest or light exercise following strenuous exercise with crossover design. Throughout the experimental period, muscle glycogen content and subjective feeling (muscle soreness and fatigue) were evaluated. What the present study observed was that muscle glycogen content was decreased with intensive exercise although both trials showed similar responses. Consistently, subjective feeling muscle soreness and fatigue were increased with exercise, but the time-courses were similar between the trials. The present findings contribute to develop the more effective procedure to recover muscle glycogen. However, further investigations are necessary to explore the influences of timing of meal, exercise intensity and duration.
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Free Research Field |
スポーツ健康科学
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Academic Significance and Societal Importance of the Research Achievements |
本研究の結果は、新たな観点からの効率的な筋グリコーゲン量回復の方法を提示できる可能性のあるものである。多くの競技現場では1日2回の練習や連日の試合などが実施されており、効率的にリカバリーを促進することが求められる。中でも筋グリコーゲン量の回復は持久系競技種目においては重要である。筋グリコーゲン量が低下した状態での運動はトレーニング自体の質の低下や運動後の筋損傷の増大など多くの点が懸念される。その一方で、運動後の食欲の低下や胃腸障害等、限られた時間で筋グリコーゲン量を十分に回復するのは難しい場合もある。したがって、本研究の結果がこのような競技現場の問題点の解決に寄与する可能性が考えられる。
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