Biochemical parameters
The biochemical parameters of the patients at baseline and the end of the trial are shown in Biochemical characteristics of participants at baseline and 12 weeks after the intervention.fTMean ± SD and Median (percentile 25 and 75) are presented for normally and not normally distributed measures, respectively. Differences of medians and change percent are presented for measures not normally distributed. Analysis after log transformation.Independent sample t-test.Analysis of covariance (ANCOVA) adjusted for baseline values, energy intake and physical activity.Paired samples t-test.Mann–Whitney.Wilcoxon.

The bold values are statistically significant.According to the analysis of covariance adjusted for energy intake, physical activity, and baseline values, significant differences in serum levels of 25-OH D3 (MD (CI 95%): 15.266 (9.311, 21.221), 