Hirano Masahiro, Katoh Munenori, Gomi Masahiro, Arai Saori
Department of Physical Therapy, Faculty of Health Sciences, Ryotokuji University: 5-8-1 Akemi, Urayasu-shi, Chiba 279-8567, Japan.
J Phys Ther Sci. 2020 Feb;32(2):120-124. doi: 10.1589/jpts.32.120. Epub 2020 Feb 14.
[Purpose] This study aimed to determine the validity and reliability of isometric knee extension muscle strength measurements using a belt-stabilized hand-held dynamometer compared to that using an isokinetic dynamometer with the participant in a sitting posture. [Participants and Methods] Forty-two university students participated. The isometric knee extension muscle strength was measured using a hand-held dynamometer and an isokinetic dynamometer. For both measurements, the participants were in the similar sitting posture. The sitting posture maintained trunk stability, with the hands on the bed, and the non-measurement-side toe touching the floor or table. The intra-class correlation coefficient and the relevance were verified. [Results] Intra-rater correlation coefficient (1, 1) of the two measurements was ≥0.75. A significant difference was found in the measurement value between males and females. No significant difference was found between the measurements value of the two devices. A significant positive correlation was found in the measurement value of two devices in the male participants. [Conclusion] When compared to the standard method of isometric knee extension muscle strength measurements using an isokinetic dynamometer with the participant in the sitting posture, measurements using the belt-stabilized hand-held dynamometer were considered valid and highly reliable in the male participants.
[目的] 本研究旨在确定与参与者坐姿下使用等速测力计相比，使用带稳定装置的手持测力计测量等长伸膝肌力的有效性和可靠性。[参与者与方法] 42名大学生参与。使用手持测力计和等速测力计测量等长伸膝肌力。两种测量中，参与者均保持相似坐姿。坐姿为双手置于床上以保持躯干稳定，非测量侧脚尖触地或触桌。验证组内相关系数和相关性。[结果] 两次测量的组内相关系数（1,1）≥0.75。男性和女性的测量值存在显著差异。两种设备的测量值之间未发现显著差异。男性参与者中两种设备的测量值存在显著正相关。[结论] 与参与者坐姿下使用等速测力计测量等长伸膝肌力的标准方法相比，使用带稳定装置的手持测力计测量对男性参与者而言被认为是有效且高度可靠的。
