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Effects of High-Dose Vitamin D on Hormones, Neuromuscular Function, Cognition, and Body Composition in Athletes

RecruitingNAAges 17 Years - 60 YearsAllThe Jerzy Kukuczka Academy of Physical Education …
NCT07641075 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

This study aims to evaluate the effects of high-dose vitamin D3 supplementation on selected physiological, neuromuscular, and cognitive parameters in athletes. At the baseline visit, participants will undergo a series of assessments at the Functional Research Laboratory at AWF Katowice, including a 10 mL venous blood sample collection, body composition analysis (via InBody and DEXA scans), neuromuscular function evaluation using tensiomyography (TMG), and computerized cognitive tests via the Vienna Test System. Following baseline testing, participants will be randomly assigned to either the vitamin D3 group or the placebo group. The active group will receive a daily dose of 4,000 IU of vitamin D3 (1 capsule with dinner), while the control group will receive an identical placebo. The intervention period will last for 4 or 8 weeks. Upon completion of the supplementation period, all baseli

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📋 Eligibility rules (as published)
Inclusion Criteria: * a minimum of 8 years of training experience, * absence of injuries in the 6 months leading up to the assessments, * consistent engagement in training sessions a minimum of 5 times per week over the last 6 months. Exclusion Criteria: * vitamin D supplementation within one month prior to the study, * use of multivitamin supplements, * intestinal disorders.
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What it tests

  • Vitamin D supplementation
  • Placebo
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Where

1 site
The Jerzy Kukuczka Academy of Physical Education in Katowice
Katowice, Poland
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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