Faculty of Health Sciences, Department of Physiotherapy and Rehabilitation, Akdeniz University, Konyaalti/Antalya, Turkey.
School of Physical Therapy and Rehabilitation, Pamukkale University, Denizli, Turkey.
Physiother Theory Pract. 2022 Jan;38(1):182-188. doi: 10.1080/09593985.2020.1731894. Epub 2020 Feb 24.
: The L test is a modified version of the Timed Up and Go Test (TUG), with a walking path that is L-shaped. The L test is a more comprehensive test since it includes a longer walking path than TUG and turning in both directions.: This study aimed to examine the reliability and validity of the L test, and the minimal detectable change (MDC) in children with cerebral palsy (CP).: The study included 80 children with CP at levels 1 and 2 according to the Gross Motor Function Classification System (GMFCS). The Intraclass Correlation Coefficient (ICC) was used to assess the reliability of the L test according to GMFCS level. MDC estimates were calculated using baseline data. The correlations of the L test with TUG and the Timed up and Down Stairs Test (TUDS) were assessed for convergent validity.: Intra-rater (ICC 0.903-0.985 for level 1-2) and inter-rater (ICC 0.806-0.937 for level 1-2) reliability of the L test were determined to be excellent. A moderate correlation was found between the L test and TUG (r: 0.691) and TUDS (r: 0.546) for level 1; a moderate correlation was found between the L test and TUG (r: 0.625) and a high correlation was found between the L test and TUDS (r: 0.734) for level 2. The MDC values in terms of intra-rater were 1.44-2.21 s for level 1-2, and 1.30-1.57 s for level 2 in terms of inter-rater, respectively.: The results of this study showed that the L test is a valid and reliable method in the assessment of functional mobility in children with CP.
L 测试是计时起立行走测试（TUG）的改良版本，其行走路径呈 L 形。与 TUG 相比，L 测试的行走路径更长，并且需要双向转弯，因此它是一种更全面的测试。本研究旨在检验 L 测试在脑瘫儿童中的可靠性和有效性，以及最小可检测变化（MDC）。研究纳入了 80 名 GMFCS 水平 1 和 2 的脑瘫儿童。使用组内相关系数（ICC）评估 L 测试在 GMFCS 水平上的可靠性。使用基线数据计算 MDC 估计值。评估 L 测试与 TUG 和 Timed up and Down Stairs Test（TUDS）之间的相关性，以评估其聚合效度。
L 测试在 GMFCS 水平 1-2 时的组内（ICC 0.903-0.985）和组间（ICC 0.806-0.937）可靠性均为优秀。L 测试与 TUG（r：0.691）和 TUDS（r：0.546）在 GMFCS 水平 1 之间存在中度相关性，L 测试与 TUG（r：0.625）之间存在中度相关性，L 测试与 TUDS（r：0.734）之间存在高度相关性。GMFCS 水平 1-2 的组内 MDC 值分别为 1.44-2.21s，组间 MDC 值分别为 1.30-1.57s。本研究结果表明，L 测试是评估脑瘫儿童功能性移动能力的有效且可靠的方法。
