Table 2.

Partial correlation coefficients between 25(OH)D₃ levels (ng/mL) and weekly minutes of physical activity, including participation in outdoor physical activity within the past 2 months, derived from accelerometry and questionnaires, adjusted for season, age and BMI.

	Spearman correlation coefficient	P-value
6 months n=58
Accelerometry
Light PA (min)	0.05	0.74
Moderate PA (min)	0.23	0.08
Vigorous PA (min)	0.37	0.006
Moderate-to-vigorous PA (min)	0.27	0.04
Total PA (min)	0.17	0.22
Steps	0.15	0.29
Questionnaire
Light PA (min)	0.13	0.33
Moderate PA (min)	−0.15	0.27
Vigorous PA (min)	0.08	0.56
Moderate-to-vigorous PA (min)	−0.15	0.27
Total PA (min)	0.01	0.92
Outdoor PA (min) n=19*	0.11	0.68
12 months n=51
Accelerometry
Light PA(min)	−0.09	0.57
Moderate PA (min)	0.08	0.60
Vigorous PA (min)	0.12	0.44
Moderate-to-vigorous PA (min)	0.06	0.68
Total PA (min)	−0.01	0.96
Steps	−0.08	0.59
Questionnaire
Light PA(min)	0.13	0.38
Moderate PA (min)	0.09	0.53
Vigorous PA (min)	0.03	0.83
Moderate-to-vigorous PA (min)	0.18	0.22
Total PA (min)	0.17	0.26
Outdoor PA (min) n=22*	0.35	0.15
24 months n=28**
Accelerometry
Light PA(min)	0.21	0.29
Moderate PA (min)	0.04	0.83
Vigorous PA (min)	0.001	0.99
Moderate-to-vigorous PA (min)	0.02	0.92
Total PA (min)	0.09	0.66
Steps	0.20	0.31
Questionnaire
Light PA (min)	−0.16	0.42
Moderate PA(min)	−0.21	0.28
Vigorous PA (min)	0.05	0.81
Moderate-to-vigorous PA (min)	−0.17	0.38
Total PA (min)	0.02	0.94

^*data not available for all participants and time points, because outdoor PA question was added subsequently to the ColoCare questionnaire

^**no adjustments due to the small sample size, no evaluation of outdoor PA

Abbreviations: PA, physical activity; min, minutes