Statistical analysis
Intra individual variation was calculated from the estimation of variance by ANOVA from the measurements of the analytes from the two samples obtained from day-1 and day-15 before intervention.
The data is presented as median with 25th and 75th percentiles. Differences between groups were tested using Wilcoxon’s Signed rank matched pair test, a non parametric test, for paired analysis. Association was measured using Pearson Correlation Coefficient. Relative percentage change was calculated with respect to pre-supplementation value. The analysis was performed using SPSS (version 12.0, Chicago, USA).