Biorobotics and Biomechanics Lab (BRML), Faculty of Mechanical Engineering, Technion-Israel Institute of Technology, Haifa, Israel.
Assuta Ashdod Medical Center, Ashdod, Israel.
Sports Biomech. 2022 Nov;21(10):1189-1199. doi: 10.1080/14763141.2020.1743744. Epub 2020 Apr 22.
Running-induced fatigue alters foot strike pattern. The purpose of this study was to assess plantar pressure and centre of pressure (CoP) trajectory alterations after a 30-minute run at sub-maximal speed in experienced long-distance runners. Plantar pressure data from 9 experienced heel-to-toe male runners was collected before and after a 30-minute run on a treadmill at a speed 5% above the respiratory compensation point (RCP) of each participant. Significant changes in the plantar-pressure map were found post-run, including increased impulses in the first metatarsal head (9.92%, < 0.001) and hallux areas (16.19%, < 0.001), and decreased impulses in the fourth and fifth metatarsal heads (4.95%, < 0.05). The CoP curve showed a medial shift ( < 0.01). The plantar-pressure map and CoP trajectory were altered following a 30-minute exhausting run. These changes may indicate an increase in stress on joints and tissues when individuals are fatigued and may promote overload injuries.
跑步引起的疲劳会改变足触地方式。本研究旨在评估经验丰富的长跑运动员以低于呼吸补偿点（RCP）5%的速度在跑步机上进行 30 分钟亚极量跑步后，足底压力和中心压力（CoP）轨迹的变化。在参与者的 RCP 之上，以 5%的速度在跑步机上进行 30 分钟跑步前后，收集了 9 名经验丰富的足跟到足趾男性跑步者的足底压力数据。跑步后发现足底压力图发生了显著变化，包括第一跖骨头（9.92%，<0.001）和大脚趾区域（16.19%，<0.001）的冲击增加，以及第四和第五跖骨头的冲击减少（4.95%，<0.05）。CoP 曲线显示向内侧转移（<0.01）。在 30 分钟的疲劳跑步后，足底压力图和 CoP 轨迹发生了变化。这些变化可能表明个体疲劳时关节和组织承受的压力增加，并可能导致过度负荷损伤。
