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最終更新日：2024/11/12
熊崎 昌
クマザキ アキラ
(Akira Kumazaki)
論文
- タイトル
- タイトル（英）
- Longitudinal Development of Physical Characteristics and Function in Japanese Junior Rugby Union Players.
- 参照URL
- https://researchmap.jp/akirakumazaki/published_papers/48209926
- 著者
- 著者（英）
- Akira Kumazaki,Tomomi Fujimoto,Yuiko Matsuura
- 担当区分
- 概要
- 概要（英）
- PURPOSE: To longitudinally investigate the development of physical characteristics and function during 3 years of high school among Japanese junior rugby players and examine the differences in these parameters between the positions. METHODS: In 83 junior rugby players (forwards: n = 46, backs: n = 37) from one Japanese high school team who had participated in national high school competitions, anthropometric variables (height, body mass, fat and lean body mass, and body mass index), upper- and lower-body strength (eg, 1-repetition-maximum [1RM] bench press, isokinetic knee muscle strength at 60°/s and 180°/s), and sprint and jump performance were measured. Upper- and lower-body strength relative to body mass and lean body mass were also calculated. RESULTS: All anthropometric indices improved with increasing age, and the values were higher in forwards than in backs (all P < .05). The 1-repetition maximum bench press (forwards: 40.8%, backs: 52.5%) and isokinetic knee strength (eg, extension at 60°/s, forwards: 15.4%, backs: 10.0%) improved with age (from 16 to 18 y), and they were higher in forwards than in backs (all P < .05). Meanwhile, the 1RM bench press relative to lean body mass did not differ between the positions. Isokinetic knee muscle strength at 60°/s and 180°/s relative to lean body mass and sprint and jump performance did not improve with age. CONCLUSION: These results indicate that Japanese junior rugby players need to develop larger physiques and continuously increase their lower-body strength to improve sprint and jump performance.
- 出版者・発行元
- 出版者・発行元（英）
- 誌名
- 誌名（英）
- International journal of sports physiology and performance
- 巻
- 18
- 号
- 9
- 開始ページ
- 1038
- 終了ページ
- 1046
- 出版年月
- 2023年9月1日
- 査読の有無
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- DOI URL
- https://doi.org/10.1123/ijspp.2023-0114
- 共同研究・競争的資金等の研究課題