Vitamin D Supplementation in Physical Performance

Efficacy of Vitamin D Supplementation in Physical Performance of Iranian Elite Athletes

This study was performed to evaluate the efficacy of weekly vitamin D supplementation on athletic performance in Iranian athletes

Seventy subjects were enrolled in the study. The athletes were randomly divided into two groups: vitamin D supplement (D; received 50,000 IU of vitamin D supplement weekly) and control (P, received a placebo weekly). Duration of the study was eight weeks. Anthropometric, dietary, athletic performance and biochemical evaluations were performed for all subjects in the beginning and in the end of the intervention period.

Inclusion Criteria:

• healthy
• professional athletes

Exclusion Criteria:

• receiving vitamin D supplement in past 3 months