study on walking ability by fluctuation of walking velocity during a gait cycle

本研究的目的是证明步态周期中的步行速度波动是否是步行能力的有效指标。以10例健康人、9例偏瘫患者、13例膝骨性关节炎患者和7例髋关节骨关节炎患者为研究对象进行步态分析。分析结果表明，由髋关节加速度计算的相对步行速度受两两线性回归截面长度的影响，并提出了合适的截面条件。步态分析结果表明，步态周期内步态速度的标准差随着步态平均速度的增加而增大，说明变异系数比标准差更适合作为步态能力的评价指标。

The aim of this study was to prove whether fluctuation of walking velocity during gait cycle is an effective index of walking ability or is not. the subject for the gait analysis are 10 healthy person, 9 person with hemiplegia, 13 person with knee osteoarthritis and 7 person with hip osteoarthritis.Result from the analysis reveal that the relative walking velocity calculated from the acceleration of hip is affected by the section length of pairwise linear regression, and condition of the appropriate section is proposed. the results obtained in this gait analysis indicated increasing standard deviation of walking velocity during a gait cycle with average walking velocity and suggest that variation coefficient is more useful for an evaluation index of the walking ability than the standard deviation.