Table 2.

Independency of muscle measurements and handgrip strength.

	HGS (kg)
Measurement	model 1		model 2		model 3		model 4		model 5
	β	P	β	P	β	P	β	P	β	P
Thigh muscle CSA (mm2)	0.503	<0.001	0.483	<0.001	0.433	<0.001	0.382	0.001	0.267	0.018
L3 trunk muscle CSA (mm2)	0.518	<0.001	0.504	<0.001	0.448	<0.001	0.402	0.001	0.227	0.062
G.Med/MinM CSA (mm2)	0.552	<0.001	0.543	<0.001	0.490	<0.001	0.454	<0.001	0.280	0.020
G.MaxM CSA (mm2)	0.383	0.001	0.349	0.005	0.304	0.007	0.221	0.079	0.079	0.500
Thigh muscle PDFF (%)	-0.381	0.001	-0.372	0.001	-0.317	0.004	-0.300	0.005	-0.209	0.031
L3 trunk muscle PDFF (%)	-0.443	<0.001	-0.447	<0.001	-0.353	0.003	-0.344	0.003	-0.287	0.006
G.Med/MinM PDFF (%)	-0.325	0.004	-0.337	0.002	-0.202	0.100	-0.203	0.086	-0.187	0.073
G.MaxM PDFF (%)	-0.351	0.002	-0.378	0.001	-0.259	0.024	-0.281	0.011	-0.194	0.053

β is the regression coefficient. Values of P < 0.05 are marked in bold.

L3 trunk, third lumbar trunk; G.Med/MinM, gluteus minimus and medius muscle; G.MaxM, gluteus maximus muscle; CSA, muscle cross-sectional area; PDFF, proton-density fat-fraction.

model 1, unadjusted; model 2, adjusted for BMI; model 3, adjusted for age; model 4, adjusted for age and BMI; model 5, adjusted for age, BMI, albumin, predialysis BUN, predialysis creatinine, and phosphorus.