Mechanical mechanism of movements during start in speed skating

速度滑冰起步时运动的机械机制

• 批准号: 22700627
• 负责人: YUDA Jun
• 金额: $ 2.75万
• 依托单位: Japan Women's College of Physical Education
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22700627/
• 关键词: スピードスケート; ブレード反力; 3次元動作分析; キネティクス; 関節トルク

We investigated the kinetics of the support leg during the start in speed skating by analyzing blade reaction forces measured by instrumented sensor klapskates and kinematical parameters measured by three-dimensional motion analysis. In this study, the 3rd step(left support leg) at approximately 5 m from the start line was analyzed. The peak value in the vertical blade reaction force during start movement(2.93 N/bw) was greater than those in straight and curve skating. This indicates that the external load at the lower limb during the start in speed skating is extremely large. Moreover, the knee joint exerted a large extension power during the second half of the stroke(this peak value was approximately 12 times that of straight skating and 4 times that of curve skating). Thus, a great exertion of the knee extension torque would be a characteristic of the start in speed skating.

通过对装有传感器的klapskates测量的冰刀反力和三维运动分析测量的运动学参数的分析，研究了速滑起步阶段支撑腿的动力学。在本研究中，分析了距离起跑线约5 m处的第3步（左支撑腿）。在启动运动期间的垂直刀片反作用力的峰值（2.93 N/bw）大于直线和曲线滑冰。这表明，在速度滑冰的启动过程中下肢的外部负荷非常大。此外，在划水的后半段，膝关节施加了大的伸展力（该峰值约为直线滑行的12倍，曲线滑行的4倍）。因此，膝盖伸展扭矩的巨大施加将是速度滑冰中开始的特征。

项目成果

レース分析から動作分析へ～スピードスケートにおける競技力向上へのスポーツ科学の活用～

从比赛分析到动作分析～利用运动科学提高速度滑冰竞争力～

• 发表时间: 2011
• 作者: 田原亮二;下永田修二;田口正公;市川浩;湯田淳
• 通讯作者: 湯田淳