Background

Inertial sensors are increasingly useful to clinicians and researchers to detect gait deficits. Reference values are necessary for comparison to children with gait abnormalities.

Objective

To present a normative database of spatiotemporal gait and turning parameters in 164 typically developing children and young adults ages 5−30 utilizing the APDM Mobility Lab® system.

Methods

Participants completed the i-WALK test at both self-selected (SS) and fast as possible (FAP) walking speeds. Spatiotemporal gait and turning parameters included stride length, stride length variability, gait speed, cadence, stance, swing, and double support times, and foot strike, toe-off, and toe-out angles, turn duration, peak turn velocity and number of steps to turn.

Results

Absolute stride length and gait speed increased with age. Normalized gait speed, absolute and normalized cadence, and stride length variability decreased with age. Normalized stride length and all parameters of gait cycle phase and foot position remained unaffected by age except for greater FSA in children 7−8. Foot position parameters in children 5−6 were excluded due to aberrant values and high standard deviations. Turns were faster in children ages 5–13 and 7–13 in the SS and FAP conditions, respectively. There were no differences in number of steps to turn. Similar trends were observed in the FAP condition except: normalized gait speed did not demonstrate a relationship with age and children ages 5–8 demonstrated increased stance and double support times and decreased swing time compared to children 11−13 and young adults (ages 5−6 only). Females ages 5−6 demonstrated increased stride length variability in the SS condition; males ages 7−8 and 14–30 ha d increased absolute stride length in the FAP condition. Similarities and differences were found between our values and previous literature.

Significance

This normative database can be used by clinicians and researchers to compare abnormal gait patterns and responses to interventions.

中文翻译：

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在惯常发育的儿童和年轻人中使用惯性传感器的时空步态参数的规范数据库。

背景

惯性传感器对于临床医生和研究人员检测步态缺陷越来越有用。与具有步态异常的儿童进行比较时，需要参考值。

目的

利用APDM MobilityLab®系统，提供了164个典型时空步态和转弯参数的规范数据库，这些数据库通常是5-30岁的发育中儿童和年轻人。

方法

参与者以自选（SS）和尽可能快（FAP）的步行速度完成了i-WALK测试。时空步态和转弯参数包括步幅，步幅变异性，步态速度，步频，步态，挥杆和双支撑时间，以及脚踏，脚趾和脚趾外角，转弯持续时间，峰值转弯速度和次数转弯的步骤。

结果

绝对步幅和步态速度随年龄增长而增加。正常步态速度，绝对和标准化步调以及步幅变异性随年龄而降低。标准化步幅以及步态周期相位和脚位置的所有参数均不受年龄的影响，除了7-8岁儿童的FSA更大。由于异常值和高标准偏差，排除了5-6岁儿童的脚部位置参数。在SS和FAP条件下，5-13岁和7-13岁的儿童的转弯速度更快。转换步骤的数量没有差异。在FAP条件下观察到类似的趋势，除了：正常的步态速度未显示与年龄的关系，与5-13岁的儿童相比，与11-13岁的儿童和年轻的成年人（5至5岁的儿童）相比，站立姿势和双支撑时间增加了，摇摆时间减少了。仅6个）。5-6岁的女性在SS状态下步幅变异性增加；在FAP条件下，7-8岁和14-30岁的男性的绝对步幅增加了。我们的价值观与以前的文献之间存在相似之处和不同之处。

意义

临床医生和研究人员可以使用此规范数据库来比较异常的步态模式和对干预措施的反应。