Department of Occupational Therapy, Faculty of Physical Therapy, Mahidol University, Nakhon Pathom, Thailand.
Department of Physical Therapy, Faculty of Physical Therapy, Mahidol University, Nakhon Pathom, Thailand.
Int J Clin Pract. 2020 Sep;74(9):e13556. doi: 10.1111/ijcp.13556. Epub 2020 Jun 18.
One-leg sit-to-stand (one-leg STS) test is a new clinical test developed to measure the unilateral lower limb (LE) muscle strength among young adults. This study examined the test-retest reliability and the criterion-concurrent validity of the one-leg STS.
Forty young adults (mean age ± SD, 28.07 ± 5.39 years) participated in the study. The one-leg STS test was administered in two separate assessment sessions to examine test-retest reliability. Two-leg STS test was administered and the performance time was measured. The concentric peak strength of hip flexors/extensors, knee flexors/extensors and ankle dorsi-flexors/plantar-flexors were determined using an isokinetic dynamometer. An intraclass correlation coefficient (ICC) was used to examine the test-retest reliability of one-leg STS test. The criterion validity of the one-leg STS test was evaluated against the performance of the two-leg STS test using an independent sample t test. The concurrent validity of the one-leg STS test was evaluated by investigating the relationships between STS performance time and LE muscle strength using Pearson correlation coefficients.
The reliability analysis showed that one-leg STS performance time had excellent test-retest reliability (ICC = 0.960, P < .001). Also, the one-leg STS performance time was not different between the first and second sessions, t (39) = 0.672, P = .506. The performance time of the one-leg STS test was significantly greater than the two-leg STS test (t (39) = 20.63, P < .001). The performance time of the one-leg STS test significantly correlated with the concentric peak strength of all LE muscles (P < .05).
The one-leg STS test demonstrated excellent reliability and criterion-concurrent validity against the two-leg STS and the LE muscle strength. The one-leg STS test was simple to administer and could be beneficial for the assessment of unilateral LE muscle strength of young adults in clinical settings.
单腿坐站（one-leg STS）测试是一种新的临床测试，旨在测量年轻人的单侧下肢（LE）肌肉力量。本研究检验了单腿 STS 的测试-重测信度和效标-同时效度。
40 名年轻人（平均年龄 ± 标准差，28.07 ± 5.39 岁）参与了研究。单腿 STS 测试在两次单独的评估中进行，以检验测试-重测信度。进行双腿 STS 测试并测量运动时间。使用等速测力计确定髋关节屈肌/伸肌、膝关节屈肌/伸肌和踝关节背屈肌/跖屈肌的向心峰力量。使用组内相关系数（ICC）检验单腿 STS 测试的重测信度。使用独立样本 t 检验评估单腿 STS 测试的效标效度。使用 Pearson 相关系数评估单腿 STS 测试的同时效度，调查 STS 运动时间与 LE 肌肉力量之间的关系。
可靠性分析表明，单腿 STS 表现时间具有极好的测试-重测信度（ICC = 0.960，P <.001）。此外，单腿 STS 表现时间在第一次和第二次测试之间没有差异，t（39）= 0.672，P = 0.506。单腿 STS 测试的运动时间明显长于双腿 STS 测试（t（39）= 20.63，P <.001）。单腿 STS 测试的运动时间与所有 LE 肌肉的向心峰力量显著相关（P <.05）。
单腿 STS 测试对双腿 STS 和 LE 肌肉力量表现出极好的可靠性和效标-同时效度。单腿 STS 测试易于实施，可在临床环境中评估年轻人的单侧 LE 肌肉力量。
