Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Vitamin D status in female military personnel during combat training | Andersen et al. Journal of the International Society of Sports Nutrition 2010 7 38 http content 7 1 38 journal of the international lociety of rporti nutrition SHORT REPORTS Open Access Vitamin D status in female military personnel during combat training Nancy E Andersen1 J Philip Karl1 Sonya J Cable2 Kelly W Williams2 Jennifer C Rood3 Andrew J Young1 Harris R Lieberman1 James P McClung1 Abstract Vitamin D is an essential nutrient for maintaining bone health. Recent data suggest that vitamin D and calcium supplementation might affect stress fracture incidence in military personnel. Although stress fracture is a health risk for military personnel during training no study has investigated changes in vitamin D status in Soldiers during United States US Army basic combat training BCT . This longitudinal study aimed to determine the effects of BCT on 25-hydroxyvitamin D 25 OH D and parathyroid hormone PTH levels in female Soldiers. Serum 25 OH D and PTH were assessed in 74 fasted Soldier volunteers before and after an 8-week BCT course conducted between August and October in Columbia South Carolina. In the total study population 25 OH D levels decreased mean SD from to nmol L P and PTH levels increased from to pg mL P during BCT. Ethnicity affected changes in vitamin D status ethnicity-by-time interaction P 25 OH D decreased P in both Hispanic and non-Hispanic whites but did not change in non-Hispanic blacks. Ethnicity did not affect BCT-induced changes in PTH. These data indicate that vitamin D status in female Soldiers may decline during military training in the late summer and early autumn months in the Southeastern US. Future studies should strive to determine the impact of military clothing and seasonality on vitamin D status as well as the functional impact of declining vitamin D status on bone health. Introduction Vitamin D is an essential nutrient for maintaining bone health. Sufficient .
