Fang Xin, Liu Chuandao, Jiang Zhongli
Department of Rehabilitation Medicine, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, People's Republic of China.
Department of Rehabilitation Medicine, the First Affiliated Hospital of Soochow University, Suzhou 215006, People's Republic of China.
R Soc Open Sci. 2018 Jan 10;5(1):170818. doi: 10.1098/rsos.170818. eCollection 2018 Jan.
Normal gait data reported show variability depending on specific equipment and techniques. Reference values of initial contact angle (ICA) and toe-off angle (TOA) are still lacking. We present a normative gait database of 292 healthy adults using the APDM Movement Monitoring inertial sensor system across a large age span of adulthood. Data were collected as participants completed a walk test for 2 min. Normalization was conducted and two factors were extracted by a factor analysis. Six reference gait variables under each factor were presented and the impacts of age, gender and BMI were evaluated by MANOVA and ANCOVA. ICA and TOA were highly correlated with speed and stride length. ICA was significantly larger in men, whereas larger TOA could be observed in women in all age groups but could not achieve significant difference. Overweight and obese adults walked at significantly lower speed, shorter stride length, reduced cadence and longer gait cycle duration. TOA was smaller in the obese group. However, the differences in ICA were not significant. Reference gait values described herein were valuable for identifying and interpreting gait phenomena using APDM®, contributing to rehabilitation of gait dysfunction.
已报道的正常步态数据显示，其会因特定设备和技术而存在差异。目前仍缺乏初始接触角（ICA）和离地角（TOA）的参考值。我们使用APDM运动监测惯性传感器系统，针对成年期的较大年龄跨度范围，建立了一个包含292名健康成年人的正常步态数据库。数据收集于参与者完成2分钟步行测试之时。进行了归一化处理，并通过因子分析提取了两个因子。给出了每个因子下的六个参考步态变量，并通过多变量方差分析（MANOVA）和协方差分析（ANCOVA）评估了年龄、性别和体重指数（BMI）的影响。ICA和TOA与速度和步幅高度相关。ICA在男性中显著更大，而在所有年龄组中，女性的TOA更大，但未达到显著差异。超重和肥胖成年人的步行速度显著更低、步幅更短、步频降低且步态周期持续时间更长。肥胖组的TOA更小。然而，ICA的差异并不显著。本文所述的参考步态值对于使用APDM®识别和解释步态现象具有重要价值，有助于步态功能障碍的康复。
