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最終更新日：2026/05/24
牧野 瑞輝
マキノ ミズキ
(Mizuki Makino)
論文
- タイトル
- タイトル（英）
- Center-of-mass velocity during the delivery phase in men's javelin throw is not strongly related to deceleration throughout the cross-step phase
- 参照URL
- https://researchmap.jp/makinomizuki/published_papers/53485407
- 著者
- 著者（英）
- Mizuki Makino,Hiroko Takigawa,Takeo Matsubayashi
- 担当区分
- 筆頭著者
- 概要
- 概要（英）
- Introduction In javelin throwing, the whole-body center-of-mass velocity at the last rear foot contact, marking the onset of delivery phase, is a key determinant of performance. However, velocity changes during the preceding cross-step phase remain poorly understood. This study aimed to quantify the dynamics of center-of-mass velocity throughout the cross-step phase, identify factors influencing these dynamics, and examine their relationship with velocity at the onset of delivery phase. Methods Eighteen right-handed male javelin throwers competing in a national championship were recorded during competition using a digital camera. The final four steps of the cross-step phase were analyzed, and whole-body center-of-mass velocity was calculated. Correlation analyses and repeated-measures ANOVA were performed to assess relationships among variables and to compare within-individual changes. Results Horizontal center-of-mass velocity at the onset of delivery phase was strongly correlated with horizontal velocity at the onset of the cross-step phase (r = 0.890, p < 0.001), whereas weak correlation was observed with the overall velocity decrease during the cross-step phase (r = 0.249, p = 0.319). Additionally, the final cross step exhibited lower velocity than the preceding steps and was strongly correlated with the total velocity decrease throughout the cross-step phase (r = 0.791, p < 0.001). Discussion These findings suggest that interindividual differences in velocity at the onset of delivery phase are more strongly related to initial cross-step velocity than to the magnitude of velocity decrease during cross-step phase. Nevertheless, because velocity decrease was pronounced during the second half of the cross-step, further investigation into mechanical factors underlying deceleration at these steps may provide additional insight into approach velocity regulation.
- 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
- 巻
- 8
- 号
- 開始ページ
- 終了ページ
- 出版年月
- 2026年5月
- 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.2026.1824228
- 共同研究・競争的資金等の研究課題