Table 1. Baseline characteristics of study groups .
| Variables |
Vitamin D
(n =22) |
Placebo
(n =22) |
P |
| Age, (y) | 35.18± 7.00 | 34.90 ± 10.37 | 0.919a |
| Male, No. (%) | 9 (22.5) | 10 (22.7) | 0.761b |
| Weight (kg) | 99.60 ± 13.95 | 99.65 ± 14.15 | 0.99a |
| Height (cm) | 168.31 ± 9.45 | 166.4 ± 7.25 | 0.457a |
| 25(OH) D (nmol/L) | 28.70 ± 13.83 | 25.02 ± 12.72 | 0.363a |
| Calcium (mg/dL) | 8.62 ± 0.40 | 8.91 ± 0.48 | 0.034a |
| Sun exposure, No. (%) | 0.258b | ||
| None | 14 (63.6) | 11 (50) | |
| 10 min–1 h | 8 (36.4) | 7 (31.8) | |
| 1-2 h | 0 (0) | 3 (13.8) | |
| >2 h | 0 (0) | 1 (4.5) | |
| Physical activity, No. (%) | 0.345b | ||
| Low active | 21 (95.5) | 18 (81.8) | |
| Minimally active | 1 (4.5) | 4 (18.2) | |
| HEPA | 0 (0) | 0 (0) |
HEPA, health enhancing physical activity.
Data presented as mean ± standard deviation for quantitative variable and No. (%) for categorical variables.
a P value for independent sample t test.
b P value for chi-square test.