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Completed

NCT Number: NCT03325686

Vitamin D Supplementation in Physical Performance

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

Completed

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Key information

Conditions

Healthy Athletes

Age range

18 year–30 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

National Nutrition and Food Technology Research Institute

Tehrān, Tehran Province, Iran

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • healthy
  • professional athletes

Exclusion criteria

  • receiving vitamin D supplement in past 3 months

Treatment and study plan

vitamin D supplement

Dietary Supplement

D; received 50,000 IU of vitamin D supplement weekly

Other names: D

Placebo

Other

placebo

Other names: P

Primary outcomes

  1. Changes from baseline serum 25-hydroxy vitamin D at eight weeks

    Time frame: 8 weeks

    nmol/L

Secondary outcomes

  1. Changes from baseline Truncal Fat at eight weeks

    Time frame: 8 weeks

    percent

  2. Changes from baseline visceral fat at eight weeks

    Time frame: 8 weeks

    percent

  3. Changes from Strength leg press at 8 weeks

    Time frame: 8 weeks

    percent

  4. Changes from Ergojump at 8 weeks

    Time frame: 8 weeks

    percent

  5. Changes from baseline Vertical jump at 8 weeks

    Time frame: 8 weeks

    percent

  6. Change from baseline Agility at 8 weeks

    Time frame: 8 weeks

    percent

  7. changes from Speed at 8 weeks

    Time frame: 8 weeks

    percent

Sponsors and collaborators

Lead sponsor

National Nutrition and Food Technology Institute

Other

Registry information

Official study title

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

Important dates

Study start
2017
Primary completion
2017
Study completion
2017
First posted
Oct 30, 2017
Registry last updated
Oct 30, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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