Interleukin-6 and Vitamin D Status during High-Intensity Resistance Training in Patients with Chronic Kidney Disease

Table 3

Baseline: interleukin-6 split on the median alongside the age, nutritional status, muscle function, and muscle morphology of the participants.

Variable	IL-6 < 6.49 (pg/mL) (𝑛=17)	IL-6 ≥ 6.49 (pg/mL) (𝑛=17)	𝑃
𝑁	17	17
Age (years)	49.0 ± 3.4	61.2 ± 2.8	0.024
Gender, male (%)	52.9	64.7	0.486
Albumin (g/L)	42.2 ± 0.9	40.1 ± 0.7	0.068
Energy intake (kcal/kg/day)	2345 ± 132	2220 ± 150	0.710
Protein intake (g/kg/day)	1.49 ± 0.09	1.15 ± 0.11	0.019
Muscle power
Leg extension, left (W/kg)	2.37 ± 0.20	1.42 ± 0.11	<0.001
Leg extension, right (W/kg)	2.43 ± 0.21	1.59 ± 0.11	0.002
Muscle fibre type
Type 1 (%)	48.4 ± 3.3	46.5 ± 4.9	0.747
Type 2A (%)	36.3 ± 2.9	37.2 ± 3.1	0.826
Type 2X (%)	15.3 ± 3.5	16.3 ± 3.7	0.935
Muscle fibre size
Type 1 (𝜇m^2)	4406 ± 348	4610 ± 320	0.567
Type 2 (𝜇m^2)	3526 ± 277	3270 ± 257	0.504

Data are presented as the mean ± SEM or as a percentage.