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三浦 康二
ミウラ コウジ
(Koji Miura)
MISC
- タイトル
- 世界一流日本人男子競技者における競歩中地面反力のフォースプラットフォームに よる計測値と重心加速度・全身角運動量による推定値との比較
- タイトル（英）
- Comparison of ground reaction forces of world elite Japanese male race walkers between measured from force platform and estimated from acceleration and angular momentum of whole body
- 参照URL
- https://www.jaaf.or.jp/pdf/about/publish/2023/4-15.pdf
- 著者
- 三浦 康二;松林 武生;景行 崇文;後藤 晴彦;杉田 正明;佐藤 高嶺;高橋 直己;川向 哲弥;今村 文男;谷井孝行
- 著者（英）
- Koji HOGA-MIURA;Takeo MATSUBAYASHI;Tahafumi KAGEYUKI;Haruhiko GOTO;Masaaki SUGITA;Takane SATO;Naoki TAKAHASHI;Tetsuya KAWAMUKAI, Fumio;IMAMURA;Takayuki TANII
- 担当区分
- 筆頭著者,責任著者
- 概要
- This study aimed to evaluate the estimation method of ground reaction force (GRF) and center of pressure (CP) of support foot during race walking. Seven world elite Japanese male race walkers, contained medalists in Olympics and World Championships, participated to the experiment of present study, walking along 50m-walkway on their own speeds of each personal best in 20kmW. Force platforms (1000Hz) which were mounted on the walkway measured GRF and CP during walking. Vicon-system (250Hz), set up on the walkway, captured three dimensional coordinates of body marks in order to calculate the position of the center of gravity of whole body (CG) and other parameters of kinematics and kinetics. From the estimated center of pressure of support foot (eCP), the acceleration of CG and the angular momentum about CG , the ground reaction force (eGRF) was estimated by using the methods of Hoga-Miura (2022). To evaluate the infl uence of estimation to other valuables, joint torques in lower extremities were compared between measured (TRQ) and estimated (eTRQ). Statistical parametric mapping (SPM) were used to conduct non-parametric paired t-test between measured and estimated variables (GRF vs eGRF , CP vs eCP , TRQ vs eTRQ). Along with the practical quick feedback methods on the training of elite athlete in Japan, this study focused on the parameters in sagittal plane. Although the length of phase where there were signifi cant differences between CP vs eCP of anterior-posterior component (p < 0.05) was about 20% of the support phase, GRF and eGRF were signifi cantly different during the almost entire support phase (p < 0.05) both in anterior-posterior and vertical component. However, in the joint torques at ankle, knee, and hip in sagittal plane (about lateral-medial axis), there were not signifi cant difference between TRQ and eTRQ during almost entire support phase.
- 概要（英）
- This study aimed to evaluate the estimation method of ground reaction force (GRF) and center of pressure (CP) of support foot during race walking. Seven world elite Japanese male race walkers, contained medalists in Olympics and World Championships, participated to the experiment of present study, walking along 50m-walkway on their own speeds of each personal best in 20kmW. Force platforms (1000Hz) which were mounted on the walkway measured GRF and CP during walking. Vicon-system (250Hz), set up on the walkway, captured three dimensional coordinates of body marks in order to calculate the position of the center of gravity of whole body (CG) and other parameters of kinematics and kinetics. From the estimated center of pressure of support foot (eCP), the acceleration of CG and the angular momentum about CG , the ground reaction force (eGRF) was estimated by using the methods of Hoga-Miura (2022). To evaluate the infl uence of estimation to other valuables, joint torques in lower extremities were compared between measured (TRQ) and estimated (eTRQ). Statistical parametric mapping (SPM) were used to conduct non-parametric paired t-test between measured and estimated variables (GRF vs eGRF , CP vs eCP , TRQ vs eTRQ). Along with the practical quick feedback methods on the training of elite athlete in Japan, this study focused on the parameters in sagittal plane. Although the length of phase where there were signifi cant differences between CP vs eCP of anterior-posterior component (p < 0.05) was about 20% of the support phase, GRF and eGRF were signifi cantly different during the almost entire support phase (p < 0.05) both in anterior-posterior and vertical component. However, in the joint torques at ankle, knee, and hip in sagittal plane (about lateral-medial axis), there were not signifi cant difference between TRQ and eTRQ during almost entire support phase.
- 出版者・発行元
- 公益財団法人 日本陸上競技連盟
- 出版者・発行元（英）
- Japan Association of Athletics Federation
- 誌名
- 日本陸連科学委員会研究報告 陸上競技の医科学サポート研究 REPORT2023
- 誌名（英）
- Bulletin of Studies in Athletics in JAAF
- 巻
- 号
- 19
- 開始ページ
- 168
- 終了ページ
- 176
- 出版年月
- 2024年4月
- 査読の有無
- 招待の有無
- 掲載種別
- 機関テクニカルレポート，技術報告書，プレプリント等
- ISSN
- DOI URL
- 共同研究・競争的資金等の研究課題