Li Jialin, Song Yang, Xuan Rongrong, Sun Dong, Teo Ee-Chon, Bíró István, Gu Yaodong
The Affiliated Hospital of Medical School, Ningbo University, Ningbo, China.
Ningbo University School of Medicine, Ningbo University, Ningbo, China.
Front Bioeng Biotechnol. 2022 Mar 4;10:833774. doi: 10.3389/fbioe.2022.833774. eCollection 2022.
Long-distance running has gained massive popularity in recent years, yet the intra-foot adaptations during this event remain unclear. This study aimed to examine the kinematic and ground reaction force alterations induced within the foot following a 5 and 10 km run using the Oxford Foot Model Ten marathon-experienced recreational runners participated in this study. Five-kilometer running led to more rearfoot dorsiflexion, rearfoot eversion, and rearfoot rotation while less forefoot plantarflexion during the stance phase. Increased rearfoot plantarflexion, while decreased forefoot plantarflexion, supination, adduction, and hallux plantarflexion were observed at 10 km. In addition, the forefoot space of footwear was found to play a role in hallux kinematics. Concerning GRFs, only a lesser propulsive force was presented after a 10 km run. Findings of this study showed that 5 km of running would induce excessive foot motion while 10 km of running may gradually change the foot posture and lead to reduced propulsive forces, which could potentially increase the risks of running-related injuries (RRI) due to overuse or fatigue. Nevertheless, further research is warranted, and this study could be used as a preliminary reference to evaluate and predict foot running-related injuries.
近年来，长跑运动广受欢迎，但跑步过程中足部的适应性变化仍不清楚。本研究旨在使用牛津足部模型，通过5公里和10公里跑，来检测足部产生的运动学变化和地面反作用力变化。十名有马拉松经验的业余跑步者参与了这项研究。5公里跑导致在站立阶段后足背屈、后足外翻和后足旋转增加，而前足足底屈曲减少。在10公里跑时，后足足底屈曲增加，而前足足底屈曲、内旋、内收和拇趾足底屈曲减少。此外，发现鞋类的前足空间在拇趾运动学中起作用。关于地面反作用力，仅在10公里跑后出现较小的推进力。本研究结果表明，5公里跑会导致足部过度运动，而10公里跑可能会逐渐改变足部姿势并导致推进力降低，这可能会因过度使用或疲劳而增加与跑步相关的损伤（RRI）风险。然而，仍需要进一步研究，本研究可作为评估和预测与足部跑步相关损伤的初步参考。
