Effectiveness of impedance parameters for muscle quality evaluation in healthy men

Table 3 Correlation coefficients between muscle strength, muscle strength, muscle thickness, muscle intensity, impedance parameters and physical characteristics of the lower extremities (n=38)

	IKEF	QF_MT	QF_MI	PA_cole	PA₅₀	\(\beta\)	\({R}_{i}\)/\({R}_{e}\)	\({f}_{c}\)	BMI
IKEF	–	0.578**	− 0.229	0.583**	0.105	0.34*	− 0.43**	− 0.027	0.032
QF_MT		–	− 0.272	0.215	0.282	0.187	− 0.101	− 0.094	0.151
QF_MI			–	− 0.05	− 0.295	0.122	0.124	− 0.056	− 0.305
PA_cole				–	− 0.053	0.008	− 0.852**	− 0.29	0.079
PA₅₀					–	− 0.015	0.003	− 0.068	0.187
\(\beta\)						–	0.554**	− 0.109	− 0.165
\({R}_{i}\)/\({R}_{e}\)							–	0.238	− 0.238
\({f}_{c}\)								–	− 0.343*
BMI									–

IKEF isometric knee extension force, QF_MT muscle thickness of quadriceps femoris, QF_MI muscle intensity of quadriceps femoris, PA_cole phase angle of Cole–Cole model, PA₅₀ phase angle of 50 kHz, \(\beta\) Beta parameter, \({R}_{i}\)/\({R}_{e}\) ratio of intracellular fluid resistance to extracellular fluid resistance, \({f}_{c}\) central relaxation frequency, BMI body mass index
Statistical significance: *p˂0.05, **p˂0.01

ISSN: 1880-6562