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最終更新日:2025/09/09

中島 大貴

ナカシマ ヒロタカ (Hirotaka Nakashima)
論文
タイトル
タイトル(英)
Analyzing angular momentum in the takeoff phase of medium-hill ski jumping
参照URL
https://researchmap.jp/hirotaka.nakashima/published_papers/51022392
著者
著者(英)
Yuta Funato,Hirotaka Nakashima,Shinji Sakurai
担当区分
概要
概要(英)
Introduction Athletic performance in competitive ski jumping is evaluated based on the aggregate scores of the jump distance and flying style. However, an understanding of how angular momentum influences performance, particularly during the approach to takeoff phases, is lacking. Therefore, this study aimed to quantify the angular momentum during the takeoff motion on a medium hill and to examine the appropriate angular momentum. Methods The study participants included 21 jumpers (16 males and five females; height: 1.65 ± 0.09 m; total weight: 54.6 ± 8.9 kg; age: 19.2 ± 6.8 years) performing on a medium hill. The angular momentum of the center of gravity of the jumper + ski system (AMCG) at takeoff was filmed at 200 Hz using a high-speed camera and analyzed in the sagittal plane. Results As a result of confirming the relationship between AMCG at takeoff and jump distance, a significant quadratic approximation curve was obtained, indicating that the value at the apex of the X-axis was 0.0391 s−1 (p < 0.05). Discussion This study shows that the appropriate AMCG value at takeoff was approximately 0.0391 s−1. The study findings are expected to contribute to coaching with objective indicators.
出版者・発行元
出版者・発行元(英)
Frontiers Media SA
誌名
誌名(英)
Frontiers in Sports and Active Living
7
開始ページ
終了ページ
出版年月
2025年9月1日
査読の有無
査読有り
招待の有無
掲載種別
研究論文(学術雑誌)
ISSN
DOI URL
https://doi.org/10.3389/fspor.2025.1643241
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