Aモード超音波による筋厚測定と筋力推定の可能性について

概要

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The purpose of this study was to investigate the relationships between the new parameter distributed by A-mode ultrasound measurement and muscle strength. The subjects were 114 healthy adult men and women (mean 38.1 y. o.).The muscle thickness of three phases (1:rest with elbow joint angle is 180 degree. 2:rest with elbow joint angle is 90 degree. 3:maximal contraction with elbow joint angle is 90 degree) were measured by using B-mode ultrasound for each subjects. And then, A-mode parameter (change of muscle thickness, muscle stiffness) were measured for combination phases with B-mode measurement (phase 1 to 2, 1 to 3 and 2 to 3).The muscle strength were measured by HHD. The precision of A-mode measurement was extremely high (correlation value: r=0.897 to 0.936). The correlation of A-mode measurement and B-mode measurement was very high (correlation value: r=0.803 to 0.874). The correlation of A-mode measurement and muscle strength was highest in phase 3. It suggests that muscle thickness in maximal muscle contraction estimate muscle strength. The new parameter distributed by A-mode ultrasound was reflected by age and sex differentiation.
2010-02-28