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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
TRIPLE
Enrollment
70
D; received 50,000 IU of vitamin D supplement weekly
placebo
National Nutrition and Food Technology Research Institute
Tehrān, Tehran Province, Iran
Changes from baseline serum 25-hydroxy vitamin D at eight weeks
nmol/L
Time frame: 8 weeks
Changes from baseline Truncal Fat at eight weeks
percent
Time frame: 8 weeks
Changes from baseline visceral fat at eight weeks
percent
Time frame: 8 weeks
Changes from Strength leg press at 8 weeks
percent
Time frame: 8 weeks
Changes from Ergojump at 8 weeks
percent
Time frame: 8 weeks
Changes from baseline Vertical jump at 8 weeks
percent
Time frame: 8 weeks
Change from baseline Agility at 8 weeks
percent
Time frame: 8 weeks
changes from Speed at 8 weeks
percent
Time frame: 8 weeks
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