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IRCT20131117015424N3 IRCT 2018-06-07 Ahvaz University of Medical Sciences Effects of vitamin D on athletes Effects of vitamin D supplementation on serum levels of adipose tissue browning endocrine regulators, anabolic hormone and exercise performance in male athletes 2018-09-23 anticipated 42 Complete https://irct.ir/trial/30147 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Used, Assignment: Parallel, Purpose: Supportive, Randomization description: Participants will randomly assigned into two groups receiving either vitamin D supplements or a placebo group,with using random number table, Blinding description: In the present study, participants and researcher will be blinded to the studying groups. Prior to the study, the cans containing the respective pills will be coded by a person other than the researcher to A and B so that the type of received pills in each group will be blinded for researcher. 3 Athletes. Intervention 1: Intervention group: Daily intake of vitamin D supplement with a dose of 2000 international unit of Zahrawi company (Iran) for 12 weeks. Intervention 2: Control group: Daily intake of a placebo that look likes vitamin D supplement and contains maltodextrin. Yes - There is a plan to make this available What will be shared: Data related to outcomes of the study will be published in the article as a comparison between groups. When: Data will be available 6 months after publication. To whom: Access to this information will be allowed for researchers and people involved in their work with athletes (such as sports coaches or professional athletes). Conditions: Data will not be available for analysis to other people, but the study protocol, the method of analysis and the final results will be presented so that people are aware of the correctness of the method of study. Where to obtain: You can refer to the Department of Nutrition Faculty of Paramedicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, or email shahi334@gmail.com to receive the documentation. How to obtain: If the applicant's request is announced in accordance with the terms, it can be sent to the person within one week. Comments:
public Majid Mohamadshahi
Ahvaz Jundishapur University of Medical Science, Golestan Ave, Ahvaz
Ahvaz Iran (Islamic Republic of) 6135715794 +98 912 439 2836 mohamadshahi-m@ajums.ac.ir Ahvaz University of Medical Sciences scientific Majid Mohamadshahi
Ahvaz Jundishapur University of Medical Science, Golestan Ave, Ahvaz
Ahvaz Iran (Islamic Republic of) 6135715794 +98 912 439 2836 mohamadshahi-m@ajums.ac.ir Ahvaz University of Medical Sciences Iran (Islamic Republic of) Intention to participate BMI between 18.5 to 29.9 Vo2max between 40-60 ml/kg/min Regular physical activity for at least three times per week each time 18 years no limit Male No intention to participate Presence of metabolic diseases Presence of diagnosed renal (acute or chronic) and bone disease Smoking Using other supplements at the beginning of the study or during past 3 months Treatment - Other Placebo Intervention group: Daily intake of vitamin D supplement with a dose of 2000 international unit of Zahrawi company (Iran) for 12 weeks Control group: Daily intake of a placebo that look likes vitamin D supplement and contains maltodextrin Serum levels of Fibroblast Growth Factor-21. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Serum levels of Bone morphogenetic protein 4. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Serum levels of meteorin-like. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Serum levels of interleukin-15. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Serum levels of Growth hormone. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Serum levels of Insulin-like growth factor 1. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Serum levels of testosterone. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Aerobic performance. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: By estimating the maximal oxygen uptake (Vo2 max) using the Bruce test. Anaerobic performance. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Be determined on the basis of 30-second Wingate test using a Monark bike. Serum levels of cortisol. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Serum levels of Parathyroid hormone. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Serum levels of 25-hydroxy vitamin D. Timepoint: pre-intervention and after 12 weeks of intervention. Method of measurement: Using enzyme-linked immunosorbent assay (ELISA) kit. Ahvaz University of Medical Sciences Approved 2018-04-21 Ethics committee of Ahvaz Jondishapour University of Medical Science Golestan Blvd Ahvaz Khouzestan Iran (Islamic Republic of)