Major factors influencing rearfoot external eversion moment during barefoot walking
Major factors influencing rearfoot external eversion moment during barefoot walking
复制标题
影响赤足行走后足外翻力矩的主要因素
DOI：
10.1016/j.gaitpost.2020.04.029
复制
发表时间：
2020
期刊：
影响因子：
2.4
通讯作者：
Yasuo Ikegami
中科院分区：
文献类型：
--
作者：
Norio Tsujimoto;Hiroyuki Nunome;Yasuo Ikegami
研究背景步行时后足过度外翻运动被认为是下肢慢性损伤的危险因素。由地面反作用力（GRF）引起的外力矩是步行过程中后足被动外翻的根本原因。研究问题本研究旨在确定影响步行过程中由地面反作用力引起的后足外外翻力矩的关键因素。方法从29名健康参与者步行过程中的三维足部坐标和地面反作用力数据，由GRF引起的后足外外翻力矩及其构成因素（踝关节中心的高度，内侧GRF，压力中心相对于横向平面中的踝关节中心的内侧距离，结果中外侧GRF是影响后足外翻力矩大小的关键因素，接触前足内侧速度与后足外翻力矩大小显著相关。在随后的支持阶段，压力中心的内外侧距离（垂直GRF的应用点）与踝关节中心的相对位置也是后足外翻力矩大小的另一个决定因素。重要性我们成功地证明了最有可能解释最初接触和随后支撑阶段后足外翻力矩大小的特定因素在走路的时候。根据研究结果，提出抑制后足外翻力矩的具体措施。
BackgroundExcessive rearfoot eversion motion during walking has been considered as a risk factor for lower limb chronic injuries. External moment due to ground reaction force (GRF) is the essential cause by which the rearfoot is passively everted during walking.Research questionThis study aims to identify the key factors influencing the rearfoot external eversion moments due to the GRF during walking.MethodsFrom 3-D foot coordinates and GRF data of 29 healthy participants during walking, the rearfoot external eversion moments due to the GRF and factors composing the moment (height of the ankle joint center, mediolateral GRF, mediolateral distance of the center of pressure relative to the ankle joint center in the transverse plane, vertical GRF) were computed.ResultsThe mediolateral GRF was a key factor influencing the magnitude of the rearfoot external eversion moment just after foot contact, with which pre-contact medial foot velocity was significantly correlated. During the subsequent support phase, the mediolateral distance of the center of pressure (the application point of the vertical GRF) relative to the ankle joint center was also found to be another determinant of the magnitude of the rearfoot external eversion moment.SignificanceWe succeeded in demonstrating the specific factors that most likely explain the magnitude of the rearfoot external eversion moment during initial contact and the subsequent support phase during walking. Based on the findings, specific measures to suppress the rearfoot external eversion moment could be proposed.