Table 4. Correlations of muscle strength parameters with CT acquired muscle parameters.

	Knee extensors	Knee extensors	Elbow flexors	Elbow flexors	Hip flexors	Hip flexors
	MIPT	MVIC	MIPT	MVIC	MIPT	MVIC
MA150 (cm2)	0.71	0.73	0.82	0.85	0.62	0.57
p-value	< .001*	< .001*	< .001*	< .001*	< .001*	< .001*
n	53	53	53	53	51	51
SMI150 (cm2/m2)	0.50	0.54	0.66	0.69	0.45	0.40
p-value	0.001*	< .001*	< .001*	< .001*	<0.001**	0.004*
n	53	53	53	53	51	51
MD150 (HU)	0.23	0.15	0.17	0.18	0.20	0.21
p-value	0.099	0.292	0.211	0.191	0.158	0.136
n	53	53	53	53	51	51
MA100 (cm2)	0.65	0.63	0.70	0.73	0.57	0.52
p-value	< .001*	< .001*	< .001*	< .001*	< .001*	<0.001*
n	53	53	53	53	51	51
SMI100 (cm2/m2)	0.52	0.48	0.55	0.56	0.47	0.42
p-value	< .001*	<0.001*	< .001*	< .001*	<0.001*	0.002*
n	53	53	53	53	51	51
MD100 (HU)	-0.01	-0.12	-0.12	-0.10	-0.06	-0.03
p-value	0.964	0.411	0.405	0.458	0.671	0.855
n	53	53	53	53	51	51
IMFA (cm2)	0.04	0.05	0.01	0.02	-0.13	-0.21
p-value	0.770	0.716	0.967	0.886	0.365	0.145
n	53	53	53	53	51	51

All patients at baseline (T0), n = 53. Calculation of Spearman correlation coefficients. MIPT: maximal isokinetic peak torque (in Newton Meter); MVIC: maximal voluntary isometric contraction (in Newton); MA = muscle area, SMI = skeletal muscle index, MD = muscle density (in HU), IMFA = inter-muscular-fat area

* = significant

° = strength-measurement of hip flexors could not be performed in n = 2 patients, thus correlation of hip flexion was calculated with n = 51 patient.