最終更新日：2026/07/15
星川 雅子
ホシカワ マサコ
(Masako Hoshikawa)
論文
- タイトル
- タイトル（英）
- Relationship between ground reaction force and sacrum acceleration during 180° change of direction maneuvers in elite female basketball players
- 参照URL
- https://researchmap.jp/hoshikawa-JISS/published_papers/52054328
- 著者
- 著者（英）
- Hiroki Ogata,Daichi Yamashita,Naoto Nishikawa,Toshiharu Yokozawa,Masako Hoshikawa
- 担当区分
- 概要
- 概要（英）
- Background This study investigated the relationship between sacrum acceleration (ACC <sub>IMU</sub> ) measured using an inertial measurement unit (IMU) and ground reaction force (GRF) measured using force plates during 180° change of direction (COD) maneuvers in elite female basketball players. Methods Fourteen Japanese national female basketball players performed two types of 180° COD tasks (lateral shuffle and 180° turn maneuvers) on force plates while wearing a sacrum-mounted IMU, completing two trials in each direction (left and right). The peak horizontal GRF during plant foot contact was normalized to body weight (GRF <sub>rel</sub> ), whereas peak horizontal and resultant ACC <sub>IMU</sub> were expressed relative to gravitational acceleration, allowing direct comparison between dimensionless quantities. Results Reliability across the two trials was assessed using intraclass correlation coefficients (ICC <sub>2,2</sub> ) and coefficients of variation (CV), and was acceptable for most variables (ICC <sub>2,2</sub> = 0.67–0.95; CV% = 3.85–12.74%). Paired t -tests revealed that peak horizontal ACC <sub>IMU</sub> was significantly greater than peak horizontal GRF <sub>rel</sub> across all conditions ( p &lt; 0.001, d = 0.56–1.06). Pearson correlation and ordinary least products regression analyses demonstrated a significant association between peak horizontal ACC <sub>IMU</sub> and peak horizontal GRF <sub>rel</sub> during the lateral shuffle ( r = 0.55–0.69, p &lt; 0.05), with the ACC <sub>IMU</sub> increasing proportionally to the GRF <sub>rel</sub> (slope = 4.55–5.23), but not during the 180° turn ( r = 0.33–0.49, p &gt; 0.05). Peak resultant ACC <sub>IMU</sub> was significantly correlated with peak horizontal GRF <sub>rel</sub> ( r = 0.64–0.72, p &lt; 0.05) and exhibited proportional bias (slope = 2.61–4.70). Conclusion These results indicate that, despite potential software-related errors and estimation uncertainties, ACC <sub>IMU</sub> monitoring represents a promising method for estimating peak horizontal GRF <sub>rel</sub> demands during task-specific 180° COD maneuvers in real-world settings.
- 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
- 1665797
- 終了ページ
- 出版年月
- 2026年2月12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.2026.1665797
- 共同研究・競争的資金等の研究課題
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