High-intensity interval exercise to improve vitamin D levels in adults with overweight or obesity

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Thirty adults with BMI 25–35 kg/m2 will be randomly assigned to an Exercise group or a Control group. The Exercise group will perform three supervised hybrid high-intensity interval training sessions per week for 12 weeks while following a balanced diet; the Control group will follow the same balanced diet but not perform the exercise program. Both groups will have resting blood draws for 25-hydroxyvitamin D, body composition measured by bioelectrical impedance, 24-hour dietary recalls, and physical activity monitored by accelerometry at baseline, 6 weeks, and 12 weeks. The study is conducted over winter at the University of Thessaly and excludes participants using vitamin D supplements or certain medications.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* BMI = 25-35 kg/m2
* Absence of musculoskeletal injuries
* Absence of chronic health-related complications
* Non-smokers

Exclusion Criteria:

* Consumption of Vitamin D supplements
* Consumption of anti-inflammatory drugs, statins and/or steroids

Where it's running

• Department of Physical Education and Sport Science, University of Thessaly
  Trikala, Karyes, Greece Recruiting

Study contacts

• Principal investigator: Dimitrios Draganidis, PhD — University of Thessaly
• Study coordinator: Dimitrios Draganidis, PhD
• Email: ddraganidis@uth.gr
• Phone: +302431047078

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.