Table 5.
Association of athletic performance with 25(OH)D by multiple regression analyses.
| Model 1 | Model 2 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| β | 95% CI | ΔR2 | β | 95% CI | ΔR2 | β | 95% CI | ΔR2 | |
| VO2max
(ml∙kg−1∙min−1) |
0.03 | −0.12, 0.14 | 0.00 | 0.01 | −0.13, 0.14 | 0.00 | −0.08 | −0.08, 0.10 | 0.00 |
| PPO (watts) |
0.05 | −1.98, 2.82 | 0.00 | 0.10 | −1.65, 3.19 | 0.01 | 0.09 | −0.35, 1.71 | 0.01 |
| RPPO (W/kg) |
0.13 | −0.01, 0.03 | 0.02 | 0.12 | –0.01, 0.03 | 0.01 | 0.16 | 0.01, 0.02 | 0.02 |
| MP (watts) |
0.16 | −0.61, 2.10 | 0.03 | 0.21 | −0.41, 2.32 | 0.04 | 0.18 | 0.13, 1.54 | 0.03 |
| RMPO (W/kg) |
0.21 | 0.00, 0.03 | 0.05 | 0.20 | −0.01, 0.02 | 0.04 | 0.23 | 0.00, 0.02 | 0.05 |
| REPT (Nm/kg) |
−0.13 | −1.67, 0.08 | 0.02 | −0.06 | −1.34, 0.90 | 0.00 | −0.08 | −1.37, 0.72 | 0.01 |
| RFPT (Nm/kg) |
0.02 | −0.52, 0.58 | 0.00 | 0.08 | −0.39, 0.69 | 0.01 | 0.03 | −0.44, 0.56 | 0.00 |
| LEPT (Nm/kg) |
−0.10 | −1.20, 0.61 | 0.01 | −0.03 | −0.99, 0.79 | 0.00 | −0.06 | −1.07, 0.72 | 0.00 |
| LFPT (Nm/kg) |
0.13 | −0.33, 0.82 | 0.02 | 0.15 | −0.31, 0.87 | 0.02 | 0.08 | −0.42, 0.73 | 0.01 |
| FR (%) |
0.13 | −0.09, 0.22 | 0.02 | 0.12 | −0.10, 0.22 | 0.01 | 0.23 | −0.04, 0.27 | 0.05 |
| Vertical jump (cm) |
0.14 | −0.05, 0.15 | 0.02 | 0.21 | −0.03, 0.17 | 0.04 | 0.20 | −0.04, 0.17 | 0.04 |
| Agility T-test (sec) |
−0.03 | −0.01, 0.01 | 0.00 | −0.12 | −0.01, 0.00 | 0.01 | −0.10 | −0.01, 0.01 | 0.01 |
Note: Model 1; adjusted for bone age, Model 2; adjusted for bone age, height, weight, training experience, lean body mass, fat mass; PPO; peak power output, RPPO; relative peak power output, MP; mean power output, RMPO; relative mean power output, REPT; right knee extension peak torque, RFPT; right knee flexor peak torque, LEPT; left knee extension peak torque, LFPT; left knee flexor peak torque, FR; fatigue resistance, 95% CI; 95% confidence interval.