Nova Southeastern University, Davie, FL, United States.
Carré Technologies, Montreal, Canada.
Gait Posture. 2019 Sep;73:239-245. doi: 10.1016/j.gaitpost.2019.07.305. Epub 2019 Jul 22.
Clinical tests of foot posture and mobility are not strongly related to the dynamic kinematics of the foot during gait. These measures may be more directly related to foot and ankle kinetics. The supination resistance test (SRT) is a clinical test that may more directly measure forces acting on the weightbearing foot to provide clinicians with insight about the loading of foot structures.
What is the relationship between the SRT in relaxed calcaneal stance and in single-leg-stance and the kinetics and kinematics of the foot and ankle during gait?
10 healthy adults between the ages of 18 and 65 were recruited to participate in this study. Three-dimensional motion analysis was performed using the Oxford Foot Model during gait. The results of the SRT were compared with peak midfoot and ankle joint moments, power generation and absorption, joint angles, and peak angular velocities and accelerations. Correlation coefficients were calculated to assess the strength of relationships between these variables and the SRT.
The SRT demonstrated significant relationships with several variables. In relaxed calcaneal stance, the SRT was inversely related to maximum midfoot pronation moments (r = -0.51), maximum midfoot plantarflexion moments (rho = -0.71), and peak midfoot power generation (r = -0.61). In single-leg-stance, the SRT was significantly related to maximum midfoot plantarflexion moments (rho = -0.55) and peak midfoot power generation (r = -0.47).
The SRT is significantly associated to several kinetic variables that quantify midfoot loading during gait. Interventions that decrease supination resistance may have the potential to increase midfoot power generation.
足部姿势和活动度的临床测试与步态时足部的动态运动学没有很强的相关性。这些措施可能与足部和踝关节的动力学更直接相关。外翻阻力测试（SRT）是一种临床测试，它可能更直接地测量作用于承重足的力，为临床医生提供有关足结构负荷的深入了解。
在放松的跟骨站立和单腿站立时，SRT 与步态时足部和踝关节的动力学和运动学有什么关系？
招募了 10 名年龄在 18 至 65 岁之间的健康成年人参与本研究。使用牛津足部模型进行三维运动分析。将 SRT 的结果与中足和踝关节关节力矩、功率生成和吸收、关节角度以及峰值角速度和角加速度的峰值进行比较。计算相关系数以评估这些变量与 SRT 之间关系的强度。
SRT 与多个变量显示出显著的关系。在放松的跟骨站立时，SRT 与最大中足内翻力矩（r= -0.51）、最大中足跖屈力矩（rho= -0.71）和峰值中足功率生成（r= -0.61）呈负相关。在单腿站立时，SRT 与最大中足跖屈力矩（rho= -0.55）和峰值中足功率生成（r= -0.47）呈显著相关。
SRT 与几种动力学变量显著相关，这些变量量化了步态时中足的负荷。降低外翻阻力的干预措施可能有潜力增加中足的功率生成。
