De Blaiser Cedric, De Ridder Roel, Willems Tine, Danneels Lieven, Roosen Philip
Department of Rehabilitation Sciences, Ghent University, 9000, Ghent, Belgium.
Department of Rehabilitation Sciences, Ghent University, 9000, Ghent, Belgium.
Phys Ther Sport. 2018 Nov;34:180-186. doi: 10.1016/j.ptsp.2018.10.005. Epub 2018 Oct 12.
To investigate reliability and validity of handheld dynamometry (HHD) strength tests to accurately measure isometric trunk flexion and extension strength.
Test-retest design and comparative analysis to investigate reliability and validity respectively.
Isometric trunk flexion and extension strength, measured with a handheld dynamometer, was compared to isometric strength testing on a stationary isokinetic dynamometer. Different test positions were examined for the HHD measurements for trunk flexion and extension strength.
Trunk muscle strength was calculated in newton metres (Nm) for both devices. Results of both devices were compared with Pearson correlations and agreement between both methods was explored with Bland-Altman plots. ICC values were calculated to assess HHD intra- and inter-tester reliability.
Reliability was good to excellent for all HHD tests (ICC = 0.67-0.93). High correlations were found between the HHD tests and stationary dynamometer tests (r = 0.65-0.86). Bland-Altman plots showed agreement between both methods for the trunk flexion test, supported in 30° trunk flexion and for the trunk extension test in a prone position in 0° trunk flexion.
Handheld dynamometry is reliable and a clinically applicable valid method to evaluate isometric trunk flexion and extension strength.
研究手持测力计（HHD）力量测试在准确测量等长躯干屈伸力量方面的可靠性和有效性。
分别采用重测设计和对比分析来研究可靠性和有效性。
将使用手持测力计测量的等长躯干屈伸力量与在固定等速测力计上进行的等长力量测试进行比较。对HHD测量躯干屈伸力量时的不同测试位置进行了检查。
计算两种设备的躯干肌肉力量，单位为牛顿米（Nm）。用Pearson相关性比较两种设备的结果，并用Bland-Altman图探讨两种方法之间的一致性。计算ICC值以评估HHD测试者内和测试者间的可靠性。
所有HHD测试的可靠性良好至优秀（ICC = 0.67 - 0.93）。HHD测试与固定测力计测试之间存在高度相关性（r = 0.65 - 0.86）。Bland-Altman图显示，在30°躯干屈曲时的躯干屈曲测试以及在0°躯干屈曲俯卧位时的躯干伸展测试中，两种方法之间具有一致性。
手持测力计是一种可靠且临床上可应用的有效方法，用于评估等长躯干屈伸力量。
