Paker Nurdan, Şirin Ahısha Büşra, Kesiktaş Nur, Buğdaycı Nazlı Derya, Soluk Özdemir Yelda
Department of Physical Therapy and Rehabilitation, Istanbul Physical Medicine and Rehabilitation Hospital, University of Health Sciences, Istanbul, Turkey.
Disabil Rehabil. 2025 Jul;47(14):3708-3713. doi: 10.1080/09638288.2024.2428824. Epub 2024 Nov 19.
This study aimed to investigate the validity and reliability of the 2-Minute Step Test (2MST) in patients with lumbar spinal stenosis (LSS).
This cross-sectional study involved 55 volunteers, aged 18-80, diagnosed with lumbar spinal stenosis. The participants were assessed using the 2MST, the 2-Minute Walk Test (2MWT), the 6-Minute Walk Test (6MWT), the Visual Analogue Scale (VAS), and the Oswestry Disability Index (ODI). To evaluate the reliability of the 2MST, test-retest reliability was determined by administering the 2MST again after a 7-day interval. The reliability analysis included the intraclass correlation coefficient (ICC) with a 95% confidence interval (CI), standard error of measurement (SEM), and minimum detectable change at the 95% confidence level (MDC). For concurrent validity, the correlations of the 2MST with the 2MWT, 6MWT, and ODI were assessed.
The 2MST exhibited excellent test-retest reliability (ICC = 0.94, SEM = 5.56, MDC=15.41) in LSS patients. Additionally, the 2MST showed significant correlations with the 2MWT ( = 0.842, < 0.001), 6MWT ( = 0.819, < 0.001), and ODI score ( = -0.722, < 0.001).
This study demonstrated that the 2MST is a valid and reliable tool for assessing exercise capacity in individuals with LSS.
CLINICALTRIALS.GOV ID: NCT06060821.
本研究旨在探讨2分钟阶梯试验（2MST）在腰椎管狭窄症（LSS）患者中的有效性和可靠性。
这项横断面研究纳入了55名年龄在18至80岁之间、被诊断为腰椎管狭窄症的志愿者。使用2MST、2分钟步行试验（2MWT）、6分钟步行试验（6MWT）、视觉模拟量表（VAS）和奥斯威斯利功能障碍指数（ODI）对参与者进行评估。为了评估2MST的可靠性，在间隔7天后再次进行2MST以确定重测信度。可靠性分析包括具有95%置信区间（CI）的组内相关系数（ICC）、测量标准误差（SEM）以及95%置信水平下的最小可检测变化（MDC）。对于同时效度，评估了2MST与2MWT、6MWT和ODI之间的相关性。
2MST在LSS患者中表现出出色的重测信度（ICC = 0.94，SEM = 5.56，MDC = 15.41）。此外，2MST与2MWT（r = 0.842，P < 0.001）、6MWT（r = 0.819，P < 0.001）和ODI评分（r = -0.722，P < 0.001）显示出显著相关性。
本研究表明，2MST是评估LSS患者运动能力的有效且可靠的工具。
NCT06060821。
