Psychometric properties of 3-meter backward walk test (3MBWT) in people with Parkinson disease.

IF 1.5 4区医学 Q2 REHABILITATION Physiotherapy Theory and Practice Pub Date : 2025-03-01 Epub Date: 2024-04-28 DOI:10.1080/09593985.2024.2348034

Kristen Barta, Anne Hill Boddy, Megan Flores, Lindsay Perry, Kathryn Sawyer, Ashley Campbell

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Abstract

Background and purpose: The purpose of this study was to investigate the 3-meter backward walk test (3MBWT) in individuals with Parkinson Disease (PD) to determine the following: (1) concurrent validity with other gait velocity measures and (2) interrater and intrarater reliability of in-person and video assessment.

Methods: A convenience sample of 25 people with PD participated. Forward gait velocity was measured using a computerized walkway (Zeno Walkway System), the 10-meter walk test (10MWT), and 4-meter walk test (4MWT). Backward gait velocity was measured using the 3MBWT. Concurrent validity was assessed using Pearson's correlations. Reliability was assessed using intra-class correlation coefficients (ICC_(2,1)).

Results: All relationships between the 3MBWT and gait outcome measures were significant. The 3MBWT demonstrated strong correlations with the 4MWT dual task (r = .795, p=<.001) and moderate correlations with 4MWT comfortable walking speed (r = .658, p < .001), 4MWT fast walking speed (r = .601,p=.002), 10MWT comfortable walking speed (r = .512, p = .009), and 10MWT dual task (r = .535, p = .006). A low yet significant correlation was noted with the 10MWT fast walking speed (r = .398, p = .049). Association between the 3MBWT and the Zeno Walkway System revealed moderate correlations. All reliability tests were significant at p < .001. Interrater reliability ICC_(2,1) values were very high for 3MBWT (ICC_(2,1) = 0.93, [0.83-0.91]). Intrarater reliability was also very high (ICC_(2,1) = 0.96 [0.90-0.98]).

Conclusion: The 3MBWT demonstrates validity and reliability as a tool for assessing gait speed in the posterior direction in people with PD.

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帕金森病患者 3 米倒退行走测试 (3MBWT) 的心理计量特性。

背景和目的：本研究旨在调查帕金森病（PD）患者的 3 米后退步行测试（3MBWT），以确定以下几点：(1）与其他步速测量方法的并发有效性；（2）当面评估和视频评估的内部和外部可靠性：方法：25 名帕金森病患者参加了方便抽样调查。采用计算机化步道（Zeno Walkway System）、10米步行测试（10MWT）和4米步行测试（4MWT）测量前向步速。后退步速采用 3MBWT 测量。并发有效性采用皮尔逊相关性进行评估。可靠性采用类内相关系数（ICC(2,1)）进行评估：3MBWT与步态结果测量之间的所有关系均显著。3MBWT与4MWT双重任务（r = .795，p=r = .658，p r = .601，p=.002）、10MWT舒适行走速度（r = .512，p = .009）和10MWT双重任务（r = .535，p = .006）有很强的相关性。10MWT 快速行走速度（r = .398，p = .049）与 3MBWT 的相关性较低，但意义重大。3MBWT 与 Zeno 步行系统之间的相关性为中等。所有的可靠性测试在 p (2,1) 时均有意义，3MBWT 的可靠性值非常高（ICC(2,1) = 0.93, [0.83-0.91]）。结论：3MBWT作为评估帕金森氏症患者后向步速的工具具有有效性和可靠性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physiotherapy Theory and Practice REHABILITATION-

CiteScore

3.40

自引率

10.00%

发文量

300

期刊介绍： The aim of Physiotherapy Theory and Practice is to provide an international, peer-reviewed forum for the publication, dissemination, and discussion of recent developments and current research in physiotherapy/physical therapy. The journal accepts original quantitative and qualitative research reports, theoretical papers, systematic literature reviews, clinical case reports, and technical clinical notes. Physiotherapy Theory and Practice; promotes post-basic education through reports, reviews, and updates on all aspects of physiotherapy and specialties relating to clinical physiotherapy.