Table 4 Serum 25(OH)D3 levels in different physical activity categories (n = 1667)
Variables | N (%) | 25(OH)D3(ng/mL)1 | P value2 |
|---|---|---|---|
Total hours of vigorous physical activity per week | |||
 < 1 h/day | 648(38.9) | 17.0 (13.3–20.8) | < 0.001 |
1 ~  < 2 h/day | 543(32.6) | 16.4 (13.2–21.3) | |
 ≥ 2 h/day | 476(28.6) | 17.8 (14.4–22.8) | |
Total hours of moderate physical activity per week | |||
 < 1 h/day | 994(59.6) | 17.0 (13.5–21.5) | 0.44 |
1 ~  < 2 h/day | 406(24.4) | 17.2 (13.7–21.6) | |
 ≥ 2 h/day | 267(16.0) | 17.0 (13.2–21.4) | |
Average walking time per day | |||
 < 0.5 h/day | 588(35.3) | 17.7 (13.9–22.4) | 0.19 |
0.5 ~  < 1 h/day | 622(37.3) | 16.8 (13.5–20.8) | |
 ≥ 1 h/day | 457(27.4) | 15.8 (13.2–20.0) | |
Average time of outdoor activity per day | |||
 < 0.5 h/day | 517(31.0) | 16.4 (13.1–20.7) | < 0.001 |
0.5 ~  < 1 h/day | 527(31.6) | 16.2 (12.9–20.8) | |
 ≥ 1 h/day | 623(37.4) | 18.0 (14.6–22.6) | |