Department of Physiotherapy and Rehabilitation, Health Sciences Faculty, Izmir Katip Celebi University, No: 33/2, Balatcik, Cigli, Izmir, Turkey; Institute of Health Sciences, Dokuz Eylul University, Mithatpasa Street, No:1606, Inciralti Health Campus, Balcova, Izmir, Turkey.
School of Physical Therapy and Rehabilitation, Dokuz Eylul University, Mithatpasa Street, No:56/15, Inciralti Health Campus, Balcova, Izmir, Turkey.
Phys Ther Sport. 2020 May;43:52-57. doi: 10.1016/j.ptsp.2020.02.002. Epub 2020 Feb 8.
To investigate the validity and intrarater and interrater reliability of eccentric strength testing of the shoulder abductors using a hand-held dynamometer (HHD) versus an isokinetic dynamometer.
Methodological.
Research laboratory and athletic training room.
Forty-seven asymptomatic shoulders of 25 participants were tested in 2 sessions by 2 physiotherapists.
Eccentric strength of the shoulder abductors was measured from 120° to 30° scapular plane abduction using the HHD and isokinetic dynamometer. A gyroscope was used to validate the velocity. Spearman's rank correlation coefficients, intraclass correlation coefficient (ICC), standard error of measurement (SEM), and minimal detectable change (MDC) were calculated.
The measurement protocol showed excellent intrarater (ICC[3,3] = 0.987, SEM = 2.59 Nm and MDC = 7.18 Nm) and interrater (ICC[3,3] = 0.990, SEM = 2.28 Nm and MDC = 6.32 Nm) reliability. HHD and isokinetic dynamometer measurements were strongly correlated (rho = 0.760, p < .001). Velocities during HDD testing were similar to those of the isokinetic dynamometer (30°/s) (p > .050).
Eccentric strength testing of the shoulder abductors using an HHD is a valid and reliable method that can be used for research and clinical purposes when an isokinetic dynamometer cannot be used.
研究使用手持测力计（HHD）与等速测力计对比对肩外展肌进行偏心强度测试的有效性、组内和组间信度。
方法学研究。
研究实验室和运动训练室。
25 名参与者的 47 个无症状肩部在 2 个会话中由 2 名物理治疗师进行测试。
使用 HHD 和等速测力计从 120°到 30°肩胛骨平面外展测量肩外展肌的偏心强度。使用陀螺仪验证速度。计算 Spearman 秩相关系数、组内相关系数（ICC）、测量标准误差（SEM）和最小可检测变化（MDC）。
该测量方案显示出极好的组内信度（ICC[3,3] = 0.987，SEM = 2.59 Nm 和 MDC = 7.18 Nm）和组间信度（ICC[3,3] = 0.990，SEM = 2.28 Nm 和 MDC = 6.32 Nm）。HHD 和等速测力计的测量结果高度相关（rho = 0.760，p <.001）。HDD 测试时的速度与等速测力计相似（30°/s）（p >.050）。
使用 HHD 对肩外展肌进行偏心强度测试是一种有效且可靠的方法，当无法使用等速测力计时，可用于研究和临床目的。
