Savva Christos, Giakas Giannis, Efstathiou Michalis, Karagiannis Christos
Clinical Trainer, Department of Health Science, Diogenous 6, Engomi, European University, Nicosia, Cyprus.
Senior Lecturer in Biomechanics, Department of Physical Education and Sport Science, University of Thessaly, Volos, Greece.
J Manipulative Physiol Ther. 2014 Mar-Apr;37(3):206-10. doi: 10.1016/j.jmpt.2014.02.001. Epub 2014 Mar 11.
The purpose of this study was to evaluate the test-retest reliability of handgrip strength measurement using a hydraulic hand dynamometer in patients with cervical radiculopathy (CR).
A convenience sample of 19 participants (14 men and 5 women; mean ± SD age, 50.5 ± 12 years) with CR was measured using a Jamar hydraulic hand dynamometer by the same rater on 2 different testing sessions with an interval of 7 days between sessions. Data collection procedures followed standardized grip strength testing guidelines established by the American Society of Hand Therapists. During the repeated measures, patients were advised to rest their upper limb in the standardized arm position and encouraged to exert 3 maximum gripping efforts. The mean value of the 3 efforts (measured in kilogram force [Kgf]) was used for data analysis. The intraclass correlation coefficient, SEM, and the Bland-Altman plot were used to estimate test-retest reliability and measurement precision.
Grip strength measurement in CR demonstrated an intraclass correlation coefficient of 0.976, suggesting excellent test-retest reliability. The small SEM in both testing sessions (SEM1, 2.41 Kgf; SEM2, 2.51 Kgf) as well as the narrow width of the 95% limits of agreements (95% limits of agreement, -4.9 to 4.4 Kgf) in the Bland-Altman plot reflected precise measurements of grip strength in both occasions.
Excellent test-retest reliability for grip strength measurement was measured in patients with CR, demonstrating that a hydraulic hand dynamometer could be used as an outcome measure for these patients.
本研究旨在评估使用液压式握力计测量神经根型颈椎病（CR）患者握力的重测信度。
选取19例CR患者（14例男性和5例女性；平均年龄±标准差，50.5±12岁）作为便利样本，由同一名评估者使用Jamar液压式握力计在两个不同的测试时段进行测量，两次测试间隔7天。数据收集程序遵循美国手治疗师协会制定的标准化握力测试指南。在重复测量过程中，建议患者将上肢置于标准化手臂位置休息，并鼓励其进行3次最大握力努力。取这3次努力的平均值（以千克力[Kgf]为单位）进行数据分析。使用组内相关系数、标准误（SEM）和Bland-Altman图来估计重测信度和测量精度。
CR患者的握力测量显示组内相关系数为0.976，表明重测信度极佳。两个测试时段的标准误均较小（SEM1为2.41 Kgf；SEM2为2.51 Kgf），并且Bland-Altman图中95%一致性界限的宽度较窄（95%一致性界限为-4.9至4.4 Kgf），这反映了两次测量中握力测量的精确性。
CR患者的握力测量具有极佳的重测信度，表明液压式握力计可作为这些患者的一项结局指标。
