The Effect of Moderate Intensity CrossFit Training on Serum Vitamin D Levels and Anthropometric Measures in Overweight/Obese Adult Women: A Randomized Controlled Trial

Vitamin D deficiency is common among women, particularly those who are overweight or obese. There is evidence that physical activity benefits on body vitamin D status. Therefore, this study assessed the effect of CrossFit training on serum ۲۵(OH)D۳ levels and anthropometric measures in women. Methods: This randomized clinical trial enrolled ۲۸ overweight/obese adult women. Participants were randomly allocated to a CrossFit (n=۱۴) or a non-intervention group (n=۱۴) for ۸ weeks. Participants were then asked to complete CrossFit training for ۱ hour, ۳ times per week. Fasting levels of ۲۵(OH)D۳ and anthropometric measurements, including weight, height, body mass index (BMI), waist-to-hip ratio (WHR), lean body mass (LBM), and body fat mass (BFM), were measured for each participant at the beginning and end of the study. Results: In total, ۲۴ women (۱۲ participants in the CrossFit and ۱۲ participants in the non-intervention group) completed the trial. After ۸ weeks of intervention, it was found a significant increase in serum ۲۵(OH)D۳ levels in the CrossFit group compared with other group (۱.۱۱±۰.۴۵ ng/ml in the CrossFit group vs. ۰.۱۹±۰.۴۴ ng/ml in the non-intervention group, P<۰.۰۱). Furthermore, in the CrossFit group, significant decreases were found in body weight, BMI, and WHR and a significant increase in LBM, compared with the non-intervention group (P< ۰.۰۵). Conclusion: Findings indicate that ۸ weeks of CrossFit training can improve vitamin D levels and anthropometric measures in overweight/obese adult women.

کلیدواژه ها:

CrossFit training ، TrialVitamin D ، ObesityAnthropometric measures.