ClinicalTrials.gov
ClinicalTrials.gov Menu

Vitamin D Supplementation in Physical Performance

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
ClinicalTrials.gov Identifier: NCT03325686
Recruitment Status : Completed
First Posted : October 30, 2017
Last Update Posted : October 30, 2017
Sponsor:
Information provided by (Responsible Party):
Tirang R. Neyestani, Ph.D., National Nutrition and Food Technology Institute

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

Condition or disease Intervention/treatment Phase
Healthy Athletes Dietary Supplement: vitamin D supplement Other: Placebo Not Applicable

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.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 70 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Triple (Participant, Care Provider, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: Efficacy of Vitamin D Supplementation in Physical Performance of Iranian Elite Athletes
Actual Study Start Date : March 1, 2017
Actual Primary Completion Date : September 1, 2017
Actual Study Completion Date : September 30, 2017

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Vitamin D
Drug Information available for: Vitamin D

Arm Intervention/treatment
Experimental: vitamin D supplement
D
Dietary Supplement: vitamin D supplement
D; received 50,000 IU of vitamin D supplement weekly
Other Name: D

Placebo Comparator: control
P
Other: Placebo
placebo
Other Name: P




Primary Outcome Measures :
  1. Changes from baseline serum 25-hydroxy vitamin D at eight weeks [ Time Frame: 8 weeks ]
    nmol/L


Secondary Outcome Measures :
  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



Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.


Ages Eligible for Study:   18 Years to 30 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • healthy
  • professional athletes

Exclusion Criteria:

  • receiving vitamin D supplement in past 3 months

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03325686


Locations
Iran, Islamic Republic of
National Nutrition and Food Technology Research Institute
Tehrān, Tehran, Iran, Islamic Republic of
Sponsors and Collaborators
National Nutrition and Food Technology Institute
Investigators
Study Chair: Tirang R. Neyestani, PhD Laboratory of Nutrition Research, National Nutrition and Food Technology Research Institute (NNFTRI) and Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Responsible Party: Tirang R. Neyestani, Ph.D., Professor, National Nutrition and Food Technology Institute
ClinicalTrials.gov Identifier: NCT03325686     History of Changes
Other Study ID Numbers: 054-575
First Posted: October 30, 2017    Key Record Dates
Last Update Posted: October 30, 2017
Last Verified: October 2017
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: Undecided

Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No

Keywords provided by Tirang R. Neyestani, Ph.D., National Nutrition and Food Technology Institute:
vitamin D
atletes
physical performance

Additional relevant MeSH terms:
Vitamins
Vitamin D
Ergocalciferols
Micronutrients
Growth Substances
Physiological Effects of Drugs
Bone Density Conservation Agents