Healthy, Athletes
Conditions
Keywords
vitamin D, atletes, physical performance
Brief summary
This study was performed to evaluate the efficacy of weekly vitamin D supplementation on athletic performance in Iranian athletes
Detailed description
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.
Interventions
DIETARY_SUPPLEMENTvitamin D supplement
D; received 50,000 IU of vitamin D supplement weekly
OTHERPlacebo
placebo
Sponsors
National Nutrition and Food Technology Institute
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
TRIPLE (Subject, Caregiver, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* healthy * professional athletes
Exclusion criteria
* receiving vitamin D supplement in past 3 months
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Changes from baseline serum 25-hydroxy vitamin D at eight weeks | 8 weeks | nmol/L |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Changes from baseline visceral fat at eight weeks | 8 weeks | percent |
| Changes from Strength leg press at 8 weeks | 8 weeks | percent |
| Changes from Ergojump at 8 weeks | 8 weeks | percent |
| Changes from baseline Truncal Fat at eight weeks | 8 weeks | percent |
| Change from baseline Agility at 8 weeks | 8 weeks | percent |
| changes from Speed at 8 weeks | 8 weeks | percent |
| Changes from baseline Vertical jump at 8 weeks | 8 weeks | percent |
Countries
Iran
Outcome results
None listed