TABLE 4.
Sequential linear regression with (binned) 25(OH)D concentration predicting cortisol concentration.
| Predictors | Regression Coefficient | Standard Error | Standardized Regression Coefficient | p-value | ΔR2 (adjusted) |
|---|---|---|---|---|---|
| Step 1a | 0.012 | ||||
| Age | 8.745 | 11.115 | 0.123 | 0.436 | |
| FFM | -1.085 | 1.926 | -0.131 | 0.576 | |
| FM | 3.938 | 3.349 | 0.259 | 0.246 | |
| Step 2b | 0.036 | ||||
| 25(OH)D | -37.008 | 22.337 | 0.251 | 0.105 |
Note. Vitamin D status for the athletes was binned at deficiency (<20.0 ng·mL-1). n = 50.
a
Predictors: Age, FFM, and FM.
b
Predictors: Age, FFM, FM and 25(OH)D.