Compare of the Effect of Exercise Training in Different Places on the Serum Vitamin D Levels of Young Women

Background: vitamin D insufficiency/deficiency is serious concern among young women. The maintain of an adequate vitamin D status, which can impact on health and exercise performance, is important to athletes and non-athletes. The aim of this study was to compare of the effect of exercise training in in outdoor and indoor places on the serum vitamin D levels of young women. Methods: In this quasi-experimental study, 14 bodybuilder, 15 tennis player, and 15 non-athletes young women purposefully selected. The fasting levels of serum 25 (OH)D was measured with ELISA method and 25(OH)D<20, 20-29 and >30 ng/ml was determined as deficient, insufficient and sufficient state, respectively. The independent t and one-way analysis of variance tests was used to data analysis (P<0.05). Results: The results showed that the serum 25(OH)D concentrations in the athletes was greater than non-athlete women, but in the outdoor athletes were higher compared to indoor athletes and non-athlete women (p˂0.05). Furthermore 58/62%, 27/59% of the athletes and 92/86%, 7/14% of the controls had deficiency and insufficiency serum vitamin D, respectively. Conclusion: It seems that exercise training can increase serum vitamin D levels but the most of athletes have an insufficient vitamin D status and indoor athletes are more susceptible to vitamin D insufficiency compared to outdoor sports athletes. Thus exercise training in outdoor can further improve serum 25(OH)D concentrations in young Women.