Table 1.

Baseline characteristics of the participants.

Variables	Vitamin D(n = 56)	Control(n = 61)
Age, year	19.0(19.0—20.0)	19.0(19.0—20.0)
Male, n (%)	39.0(69.6%)	40.0(65.6%)
Height, cm	173.36 ± 9.19	173.08 ± 9.66
Weight, kg	66.77 ± 14.46	68.53 ± 14.54
BMI, kg/m2	22.01 ± 3.29	22.64 ± 3.01
Bone turnover
25(OH)D, ng/ml	18.85 ± 7.04	19.52 ± 8.65
N-MID, ng/ml	33.61 ± 13.96	30.58 ± 10.85
PTH, pg/ml	45.76 ± 18.65	50.92 ± 20.64
Calcium, mmol/L	2.37 ± 0.08	2.38 ± 0.08
Lipid profiles
TC, mmol/L	4.38 ± 0.74	4.45 ± 0.77
HDL-C, mmol/L	1.38 ± 0.31	1.37 ± 0.32
LDL-C, mmol/L	2.59 ± 0.67	2.58 ± 0.59
TG, mmol/L	0.91 ± 0.46	1.09 ± 0.74
FFA, mmol/L	0.39 ± 0.19	0.38 ± 0.17
Erythrocytes and hemoglobin-related parameters
Hb, g/L	152.80 ± 15.64	153.95 ± 14.41
HCT, %	46.23 ± 4.10	46.23 ± 3.67
RBC, 10^12/L	5.05 ± 0.46	5.05 ± 0.40
RDW, %	40.98 ± 4.85	41.60 ± 2.27
Fatigue-related indicators
CK, U/L	276.18 ± 559.42	180.38 ± 121.51
LDH, U/L	187.80 ± 37.77	186.70 ± 30.95
T, ng/ml	4.29 ± 2.66	3.87 ± 2.40
Physical performance
VJH, cm	39.86 ± 9.84	37.44 ± 11.19
RHS, kg	413.13 ± 114.60	401.15 ± 111.30
FVC, L	4.33 ± 0.92	4.18 ± 1.04
FEV1, L	3.84 ± 0.77	3.78 ± 0.86
VO2max, ml/min	3181.86 ± 1139.70a	3073.13 ± 1048.32b
Physical activity level
Physical activity level, MET, h/day	1071.07 ± 255.16	1011.43 ± 242.25

Data are presented as mean ± SD or median (IQR) values for continuous variables and n (%) for categorical variables.

^an = 50. ^bn = 54.