Effects of trunk stability on isometric knee extension muscle strength measurement while sitting

DOI Web Site 被引用文献4件 参考文献9件
  • Hirano Masahiro
    Department of Physical Therapy, Faculty of Health Sciences, Ryotokuji University: 5-8-1 Akemi, Urayasu, Chiba 279-8567, Japan
  • Gomi Masahiro
    Department of Physical Therapy, Faculty of Health Sciences, Ryotokuji University: 5-8-1 Akemi, Urayasu, Chiba 279-8567, Japan
  • Katoh Munenori
    Department of Physical Therapy, Faculty of Health Sciences, Ryotokuji University: 5-8-1 Akemi, Urayasu, Chiba 279-8567, Japan

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<p> [Purpose] This study aimed to investigate the effect of trunk stability on isometric knee extension muscle strength measurement while sitting by performing simultaneous measurements with a handheld dynamometer (HHD) and an isokinetic dynamometer (IKD) in the same seated condition. [Subjects and Methods] The subjects were 30 healthy volunteers. Isometric knee extension muscle strength was simultaneously measured with a HHD and an IKD by using an IKD-specific chair. The measurement was performed twice. Measurement instrument variables and the number of measurements were examined by using the analysis of variance and correlation tests. [Results] The measurement instrument variables and the number of measurements were not significantly different. The correlation coefficients between the HHD and IKD measurements were ≥0.96. [Conclusion] Isometric knee extension muscle strength measurement using the HHD in the sitting position resulted in a lower value than that using the IKD, presumably because of the effect of trunk stability on the measurement. In the same seated posture with trunk stability, no significant difference in measurement values was observed between the HHD and IKD. The present findings suggest that trunk stability while seated during isometric knee extension muscle strength measurement influenced the HHD measurement.</p>

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