Development of a feedback system to improve backstroke start performance

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K19555
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 59020:Sports sciences-related
• Research Institution: Niigata University of Health and Welfare
• Principal Investigator: Nara Rio 新潟医療福祉大学, 健康科学部, 講師 (70708148)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 競泳 / 背泳ぎ / スタート / パフォーマンス

Outline of Final Research Achievements

Most previous research on the backstroke start has focused joints of lower limb.In this study, therefore, we focused on shoulder joint extension. The subjects were 11 collegiate swimmers.
Comparison of specialists and non-specialists swimmers revealed a large difference in shoulder joint angular velocity from the time of hand-off to the time of toe-off.In a previous study, we suggested the importance of keeping the shoulder joint and body trunk to 180° during the streamline entering the water after the start.Furthermore, the results supported the results.
This suggests that in order to shorten the 5m passage time, it is necessary not only to reduce the water entry range by adopting an arched-back posture, but also to obtain a streamline posture from the time of water entry to water after entry.

Free Research Field

スポーツ科学

Academic Significance and Societal Importance of the Research Achievements

これまでの研究では下肢関節の伸展について、研究がなされてきたが、肩関節の伸展も重要であることが明らかとなった。肩関節に関わる筋力向上のためには、特異的なトレーニングを実施する必要があるという事が考えられる。
このことが、将来的に競技力向上に貢献できるものと考えられ、背泳ぎスタートのレベルアップにも寄与することが考えられる。しかし、これらの特異的なトレーニングについては解明が出来ていないため、今後の課題である。