BACKGROUND:Gait analysis, such as portable gait rhythmogram (PGR), provides objective information that helps in the quantitative evaluation of human locomotion. OBJECTIVE:The purpose of this study was to assess the reliability of PGR in post-stroke patients. METHODS:Two raters (A and B) examined 48post-stroke patients. To assess intra-rater reliability, rater A tested subjects on three separate occasions (Days 1, 2, and 3). To assess inter-rater reliability, raters A and B independently tested participants on the same occasion (Day 3). RESULTS:There was no significant systematic bias between test occasions or raters. Intraclass correlation coefficient values were 0.93–0.97 for intra-rater reliability at both the comfortable speed and maximum speed, and 0.97–0.98 (comfortable speed) and 0.97–0.99 (maximum speed) for inter-rater reliability. The standard error was 1.25–1.49 (comfortable speed) and 1.62–1.77 (maximum speed) for intra-rater investigation, and 1.04–1.32 (comfortable speed) and 0.91–1.26 (maximum speed) for inter-rater investigation. At the 90% confidence level, the minimum detectable change ranged from 2.9–4.1%, and the error of an individual’s score at a given time point ranged from ±2.1–2.9%. CONCLUSIONS:Based on this excellent reliability of the PGR in post-stroke patients, it can be recommended as a simple test of gait analysis in this population.

中文翻译：

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中风后患者便携式步态节律图的可靠性

背景：步态分析，如便携式步态节律图 (PGR)，提供了有助于定量评估人体运动的客观信息。目的：本研究的目的是评估 PGR 在卒中后患者中的可靠性。方法：两名评估者（A 和 B）检查了 48 名卒中后患者。为了评估内部评估者的可靠性，评估者 A 在三个不同的场合（第 1、2 和 3 天）对受试者进行了测试。为了评估评分者间的可靠性，评分者 A 和 B 在同一场合（第 3 天）独立测试了参与者。结果：测试场合或评分者之间没有显着的系统偏差。在舒适速度和最大速度下，评分者内可靠性的组内相关系数值为 0.93-0.97，评分者间可靠性为 0.97-0.98（舒适速度）和 0.97-0.99（最大速度）。评分者内部调查的标准误差为 1.25–1.49（舒适速度）和 1.62–1.77（最大速度），评分者间调查的标准误差为 1.04–1.32（舒适速度）和 0.91–1.26（最大速度）。在 90% 的置信水平下，最小可检测变化范围为 2.9-4.1%，个体在给定时间点得分的误差范围为 ±2.1-2.9%。结论：基于 PGR 在卒中后患者中的这种出色可靠性，可以推荐它作为该人群步态分析的简单测试。个体在给定时间点的得分误差范围为±2.1-2.9%。结论：基于 PGR 在卒中后患者中的这种出色可靠性，可以推荐它作为该人群步态分析的简单测试。个体在给定时间点的得分误差范围为±2.1-2.9%。结论：基于 PGR 在卒中后患者中的这种出色可靠性，可以推荐它作为该人群步态分析的简单测试。