Effectiveness of impedance parameters for muscle quality evaluation in healthy men
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The Journal of Physiological Sciences Open Access
ORIGINAL PAPER
Effectiveness of impedance parameters for muscle quality evaluation in healthy men Hiroki Sato1,2* , Takao Nakamura1, Toshimasa Kusuhara1, Kobara Kenichi3, Katsushi Kuniyasu3, Takaki Kawashima4 and Kozo Hanayama5
Abstract We investigated the relationship between impedance parameters and skeletal muscle function in the lower extremities, as well as the effectiveness of impedance parameters in evaluating muscle quality. Lower extremity impedance of 19 healthy men (aged 23–31 years) measured using the direct segmental multi-frequency bioelectrical impedance analysis were arc-optimized using the Cole–Cole model, following which phase angle (PA), Ri /Re , and β were estimated. Skeletal muscle function was assessed by muscle thickness, muscle intensity, and isometric knee extension force (IKEF). IKEF was positively correlated with PA (r = 0.58, p
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