Serum Vitamin D, and Metabolic Risks In Obese Youth Involved In a Physical Activity Program: 1941 Board #97 May 30 3:30 PM - 5:00 PM

PURPOSE: to investigate whether a physical activity (PA) promotion program in overweight/obese (OW/OB) youngsters is favorable to changes in PA levels, vitamin-D (VIT-D) and metabolic profile and the correlations between those changes. METHODS: This was an intervention study performed twice a week, over a period of six months with 57 OW/OB youngsters (31 girls). PA promotion program aimed to increase children and adolescent's moderate-vigorous PA levels. It was performed evaluation of body composition, physical activity, maturational stage and biochemical variables (HDL, LDL and VLDL cholesterol, glucose, insulin and VIT-D). For statistical analysis, Paired sample t-tests and partial correlations were used. RESULTS: Significant differences between baseline and post intervention were observed for body composition, lipid profile and PA levels. Furthermore, ΔVIT-D was positively correlated with the ΔHDL (r=0.30), while negative correlations were found with metabolic risk factors. ΔVPA showed significant correlations with ΔVIT-D (r=0.37) and ΔHDL (r=0.34). CONCLUSIONS: After a PA program, OW/OB youth presented positive changes in body composition, vitamin D, metabolic profile and PA levels, indicating that interventions involving physical exercise should be promoted as an important component of a healthy lifestyle. This study was supportde by FCT :UID/DTP/00617/2013