Savva Christos, Mougiaris Paraskevas, Xadjimichael Christoforos, Karagiannis Christos, Efstathiou Michalis
Department of Health Science, Diogenous 6, Engomi, European University, Nicosia, Cyprus.
Department of Health Science, Diogenous 6, Engomi, European University, Nicosia, Cyprus.
J Manipulative Physiol Ther. 2018 Mar-Apr;41(3):252-257. doi: 10.1016/j.jmpt.2017.09.005.
The purpose of this study was to investigate the degree of test-retest reliability of grip strength measurement using a hand dynamometer in patients with shoulder impingement syndrome.
A total of 19 patients (10 women and 9 men; mean ± standard deviation age, 33.2 ± 12.9 years; range 18-59 years) with shoulder impingement syndrome were measured using a hand dynamometer by the same data collector in 2 different testing sessions with a 7-day interval. During each session, patients were encouraged to exert 3 maximal isometric contractions on the affected hand and the mean value of the 3 efforts (measured in kilogram-force [Kgf]) was used for data analysis. The intraclass correlation coefficient (ICC) as well as the standard error of measurement (SEM) and Bland-Altman plot were used to estimate the degree of test-retest reliability and the measurement error, respectively.
Grip strength data analysis revealed an ICC score of 0.94, which, based on the Shrout classification, is considered as excellent test-retest reliability of grip strength measurement. The small values of SEMs reported in both sessions (SEM, 2.55 Kgf; SEM, 2.39 Kgf) and the small width of the 95% limits of agreement in the Bland-Altman plot (ranging from -7.39 Kgf to 7.03 Kgf) reflected the measurement precision and the narrow variation of the differences during the 2 testing sessions.
Results from this study identified excellent test-retest reliability of grip strength measurement in shoulder impingement syndrome, indicating its potential use as an outcome measure in clinical practice.
本研究旨在调查使用握力计测量肩峰撞击综合征患者握力的重测信度。
共有19例肩峰撞击综合征患者（10名女性和9名男性；平均±标准差年龄，33.2±12.9岁；范围18 - 59岁），由同一数据收集者在2个不同的测试时段使用握力计进行测量，间隔7天。在每个时段，鼓励患者对患侧手进行3次最大等长收缩，并将这3次用力的平均值（以千克力[Kgf]为单位测量）用于数据分析。组内相关系数（ICC）以及测量标准误差（SEM）和Bland - Altman图分别用于估计重测信度和测量误差的程度。
握力数据分析显示ICC评分为0.94，根据Shrout分类，这被认为是握力测量具有出色的重测信度。两个时段报告的SEM值都较小（SEM，2.55 Kgf；SEM，2.39 Kgf），并且Bland - Altman图中95%一致性界限的宽度较小（范围从 - 7.39 Kgf到7.03 Kgf），反映了测量精度以及两个测试时段差异的窄变异性。
本研究结果表明肩峰撞击综合征患者握力测量具有出色的重测信度，表明其在临床实践中作为一项结果指标的潜在用途。
