在跑步机跑步过程中，离散运动学参数的日内重复性、测量标准误差和最小可检测变化。

The between-day repeatability, standard error of measurement and minimal detectable change for discrete kinematic parameters during treadmill running.

机构信息

School of Health & Society, Health Sciences Research Centre, University of Salford, Salford, Manchester, M6 6PU, United Kingdom.

出版信息

Gait Posture. 2021 Mar;85:211-216. doi: 10.1016/j.gaitpost.2020.12.032. Epub 2021 Jan 4.

DOI:10.1016/j.gaitpost.2020.12.032

PMID:33610824

Abstract

BACKGROUND

Kinematic parameters of the trunk, pelvis and lower limbs are frequently associated with both running injuries and performance, and the target of clinical interventions. Currently there is limited evidence reporting the between-day repeatability of discrete kinematic parameters of the trunk, pelvis and lower limbs during treadmill running.

RESEARCH QUESTION

What is the between-day repeatability, standard error of measurement and minimal detectable change of discrete kinematic parameters of the trunk, pelvis and lower limbs during treadmill running?

METHODS

16 healthy participants attended two kinematic data collection sessions two weeks apart. Three-dimensional kinematic data were collected while participants ran on a motorised treadmill at 3.2 m/s. The interclass correlation coefficient, standard error of measurement and minimal detectable change were calculated for discrete kinematic parameters at initial contact, toe off, peak angles and joint excursions during the stance phase of running.

RESULTS

Good to excellent repeatability with low standard error of measurement and minimal detectable change values were observed for sagittal and frontal plane kinematics at initial contact (Range: ICC, 0.829-0.941; SEM, 0.6°- 2.6°; MDC, 1.5°- 7.2) and peak angles during stance (Range: ICC, 0.799 - 0.946; SEM, 0.6°- 2.6°; MDC, 1.7°- 7.1°). Peak transverse plane kinematics of the hip (ICC, 0.783; SEM, 3.2°; MDC, 8.7°) and knee (ICC, 0.739; SEM, 3°; MDC, 8.4°) demonstrated moderate between-day repeatability with large SEM and MDC values. Kinematics at toe off demonstrated the lowest ICC values and largest measurement errors of all parameters (Range: ICC, 0.109 - 0.900; SEM, 0.8°- 5.7°; MDC, 2.5°- 15.7°).

SIGNIFICANCE

This is the first study detailing the measurement error and minimal detectable change for discrete kinematic parameters of the trunk and pelvis during treadmill running. The reported values may provide a useful reference point for future studies investigating between-day differences in running kinematics.

摘要

背景

躯干、骨盆和下肢的运动学参数与跑步损伤和表现密切相关，也是临床干预的目标。目前，关于跑步机跑步过程中躯干、骨盆和下肢离散运动学参数的日间重复性，仅有有限的证据报告。

研究问题

跑步机跑步过程中，躯干、骨盆和下肢离散运动学参数的日间重复性、测量误差标准和最小可检测变化是多少？

方法

16 名健康参与者在两周内参加了两次运动学数据采集。参与者以 3.2m/s 的速度在电动跑步机上跑步时，采集三维运动学数据。在跑步支撑阶段的初始接触、足趾离地、峰值角度和关节运动期间，计算离散运动学参数的组内相关系数、测量误差标准和最小可检测变化。

结果

在初始接触（范围：ICC，0.829-0.941；SEM，0.6°-2.6°；MDC，1.5°-7.2°）和支撑阶段的峰值角度（范围：ICC，0.799-0.946；SEM，0.6°-2.6°；MDC，1.7°-7.1°）中，矢状面和额状面运动学表现出良好到极好的重复性，测量误差标准和最小可检测变化值较低。髋关节（ICC，0.783；SEM，3.2°；MDC，8.7°）和膝关节（ICC，0.739；SEM，3°；MDC，8.4°）的峰值横向运动学具有中等的日间重复性，但其 SEM 和 MDC 值较大。在所有参数中，初始触地时的运动学表现出最低的 ICC 值和最大的测量误差（范围：ICC，0.109-0.900；SEM，0.8°-5.7°；MDC，2.5°-15.7°）。