Sung Paul S, Zipple J Timothy, Andraka John M, Danial Pamela
Department of Physical Therapy, Motion Analysis Center, Central Michigan University, United States.
Department of Physical Therapy, Motion Analysis Center, Central Michigan University, United States.
Foot (Edinb). 2017 Mar;30:21-26. doi: 10.1016/j.foot.2017.01.010. Epub 2017 Jan 27.
Flat foot problems are associated with impaired mobility and postural stability. The purpose of this study was to compare the kinematic and kinetic indices during one leg standing between subjects with and without flat foot.
Forty-four participants enrolled in the study, including 22 subjects with flat foot and 22 control subjects. The measurements included kinematic stability on the trunk as well as kinetic stability from a force plate. All participants were asked to maintain one leg standing with the contralateral hip and knee flexed to approximately 90° for 25seconds.
The kinetic index decreased in the flat foot group (t=-5.08, p=0.001) during one leg standing without visual input. There were strong correlations between kinetic and kinematic stabilities (0.75-0.86) with visual input and moderate correlations (0.49-0.67) without visual input in the control group.
The flat foot group exhibited a significantly decreased kinetic index without visual input. The more effective postural stability in the control group might be due to efficient compensatory strategies utilized without visual input to maintain one leg standing. These outcome measures could help to develop a practical test leading to kinematic postural changes.
扁平足问题与活动能力受损和姿势稳定性有关。本研究的目的是比较扁平足受试者和非扁平足受试者单腿站立时的运动学和动力学指标。
44名参与者纳入本研究，包括22名扁平足受试者和22名对照受试者。测量包括躯干的运动学稳定性以及来自测力台的动力学稳定性。所有参与者被要求在对侧髋部和膝盖屈曲至约90°的情况下单腿站立25秒。
在无视觉输入的单腿站立过程中，扁平足组的动力学指标下降（t=-5.08，p=0.001）。在对照组中，有视觉输入时动力学和运动学稳定性之间存在强相关性（0.75 - 0.86），无视觉输入时存在中度相关性（0.49 - 0.67）。
在无视觉输入时，扁平足组的动力学指标显著下降。对照组中更有效的姿势稳定性可能归因于在无视觉输入时利用了有效的代偿策略来维持单腿站立。这些结果指标可能有助于开发一种导致运动学姿势变化的实用测试。
