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Assessment of diurnal variation of stride time variability during continuous, overground walking in healthy young adults.
Gait & Posture ( IF 2.4 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.gaitpost.2020.04.024
Jackson Lordall 1 , Paul Bruno 2 , Nicholas Ryan 2
Affiliation  

BACKGROUND There is emerging evidence that gait variability outcomes provide unique insights regarding the status of an individual's locomotor control system; however, there is currently limited evidence on the within-day reliability of stride time variability (STV) outcomes, or whether they demonstrate diurnal variation, when measured during continuous, overground walking in healthy young adults. RESEARCH QUESTIONS 1) Are STV outcomes measured in the morning and afternoon during continuous, overground walking significantly different in healthy young adults? 2) What is the within-day reliability of STV outcomes measured during continuous, overground walking in healthy young adults?. METHODS Thirty-one healthy young adults (20.8 ± 3.7 years) completed two 10-minute continuous, overground walking trials on the same day (9:00-11:00am and 3:00-5:00pm) at their preferred walking speed. Data from a waist-mounted tri-axial accelerometer were used to determine the series of consecutive stride times for each trial. RESULTS There were no significant differences between sessions for average walking speed, average stride time, or STV. The within-day reliability was excellent for average walking speed and stride time, and generally poor to fair for STV. SIGNIFICANCE Healthy young adults do not appear to demonstrate diurnal variation in STV outcomes during continuous, overground walking; however, the development of a protocol to improve their reliability, as well as the establishment of normative ranges for such outcomes, would be beneficial to improve their application and interpretation in research and clinical settings.

中文翻译:

在健康的年轻人中,进行连续,地面行走时步幅时间变异性的昼夜变化评估。

背景技术有越来越多的证据表明,步态变异性结果提供了有关个体运动控制系统状态的独特见解。但是,目前在健康年轻人中,步幅时间可变性(STV)结果在一天之内的可靠性,或者在连续地上步行中进行测量时,它们是否表现出昼夜变化的证据有限。研究问题1)在健康的年轻人中,在连续的地面上行走过程中,早晨和下午测量的STV结果是否显着不同?2)在健康的年轻人中,在连续的地面行走过程中,STV结果在一天之内的可靠性如何?方法31名健康的年轻人(20.8±3.7岁)在同一天(上午9:00-11:00和3:00-5)完成了两次连续的10分钟的地面步行试验:00pm)以他们喜欢的步行速度。来自腰部安装的三轴加速度计的数据用于确定每个试验的一系列连续步幅时间。结果各次会议的平均步行速度,平均步幅时间或STV间无显着差异。一天之内的可靠性对于平均步行速度和迈步时间而言是极好的,对于STV来说通常很差。意义健康的年轻人似乎在连续的地面行走过程中未显示出STV结果的昼夜变化。然而,制定一项协议以提高其可靠性,以及建立此类结果的规范范围,将有利于改善其在研究和临床环境中的应用和解释。来自腰部安装的三轴加速度计的数据用于确定每个试验的一系列连续步幅时间。结果各次会议的平均步行速度,平均步幅时间或STV间无显着差异。一天之内的可靠性对于平均步行速度和迈步时间而言是极好的,对于STV来说通常很差。意义健康的年轻人似乎在连续的地面行走过程中未显示出STV结果的昼夜变化。然而,制定一项协议以提高其可靠性,以及建立此类结果的规范范围,将有利于改善其在研究和临床环境中的应用和解释。来自腰部安装的三轴加速度计的数据用于确定每个试验的一系列连续步幅时间。结果各次会议的平均步行速度,平均步幅时间或STV间无显着差异。一天之内的可靠性对于平均步行速度和迈步时间而言是极好的,对于STV来说通常很差。意义健康的年轻人似乎在连续的地面行走过程中未显示出STV结果的昼夜变化。然而,制定一项协议以提高其可靠性,以及建立此类结果的规范范围,将有利于改善其在研究和临床环境中的应用和解释。结果各次会议的平均步行速度,平均步幅时间或STV间无显着差异。一天之内的可靠性对于平均步行速度和迈步时间而言是极好的,对于STV来说通常很差。意义健康的年轻人似乎在连续的地面行走过程中未显示出STV结果的昼夜变化。然而,制定一项协议以提高其可靠性,以及建立此类结果的规范范围,将有利于改善其在研究和临床环境中的应用和解释。结果各次会议的平均步行速度,平均步幅时间或STV间无显着差异。一天之内的可靠性对于平均步行速度和迈步时间而言是极好的,对于STV来说通常很差。意义健康的年轻人似乎在连续的地面行走过程中未显示出STV结果的昼夜变化。然而,制定一项协议以提高其可靠性,以及建立此类结果的规范范围,将有利于改善其在研究和临床环境中的应用和解释。意义健康的年轻人似乎在连续的地面行走过程中未显示出STV结果的昼夜变化。然而,制定一项协议以提高其可靠性,以及建立此类结果的规范范围,将有利于改善其在研究和临床环境中的应用和解释。意义健康的年轻人似乎在连续的地面行走过程中未显示出STV结果的昼夜变化。然而,制定一项协议以提高其可靠性,以及建立此类结果的规范范围,将有利于改善其在研究和临床环境中的应用和解释。
更新日期:2020-05-01
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