Wang Li-I, Gu Chin-Yi, Wang I-Lin, Siao Sheng-Wun, Chen Szu-Ting
a Department of Physical Education and Kinesiology , National Dong Hwa University , Hualien , Taiwan.
b Department of Education and Human Potentials Development , National Dong Hwa University , Hualien , Taiwan.
Sports Biomech. 2018 Jun;17(2):143-156. doi: 10.1080/14763141.2016.1249938. Epub 2017 Feb 28.
The purpose of this study was to compare the lower extremity inter-joint coordination of different collision forces runners during running braking phase. A dynamical system approach was used to analyse the inter-joint coordination parameters. Data were collected with six infra-red cameras and two force plates. According to the impact peak of the vertical ground reaction force, twenty habitually rearfoot-strike runners were categorised into three groups: high collision forces runners (HF group, n = 8), medium collision forces runners (MF group, n = 5), and low collision forces runners (LF group, n = 7). There were no significant differences among the three groups in the ankle and knee joint angle upon landing and in the running velocity (p > 0.05). The HF group produced significantly smaller deviation phase (DP) of the hip flexion/extension-knee flexion/extension during the braking phase compared with the MF and LF groups (p < 0.05). The DP of the hip flexion/extension-knee flexion/extension during the braking phase correlated negatively with the collision force (p < 0.05). The disparities regarding the flexibility of lower extremity inter-joint coordination were found in high collision forces runners. The efforts of the inter-joint coordination and the risk of running injuries need to be clarified further.
本研究旨在比较不同碰撞力跑步者在跑步制动阶段的下肢关节间协调性。采用动态系统方法分析关节间协调参数。使用六个红外摄像机和两个测力台收集数据。根据垂直地面反作用力的冲击峰值，将20名习惯后足着地的跑步者分为三组：高碰撞力跑步者（HF组，n = 8）、中等碰撞力跑步者（MF组，n = 5）和低碰撞力跑步者（LF组，n = 7）。三组在着地时的踝关节和膝关节角度以及跑步速度方面无显著差异（p > 0.05）。与MF组和LF组相比，HF组在制动阶段髋屈伸-膝屈伸的偏差相位（DP）明显更小（p < 0.05）。制动阶段髋屈伸-膝屈伸的DP与碰撞力呈负相关（p < 0.05）。在高碰撞力跑步者中发现了下肢关节间协调性灵活性的差异。关节间协调的作用以及跑步损伤的风险需要进一步阐明。
