Effects of two popular weight loss programs on changes in body composition and visceral adipose tissue in women (LB296)
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The purpose of this study was to determine if different types of exercise and diet interventions promote greater changes in visceral adipose tissue (VAT). 54 sedentary women (348 yrs, BMI 356) were randomized to participate in the Curves (C) or Weight Watchers (W) weight loss programs for 16wks. Participants in the C program followed a 1,200 kcal/d diet for 1wk and 1,500 kcal/d diet for 3 wks (30:45 CHO:PRO). Subjects then ingested 2,000 kcals/d for 2wks (45:30 CHO:PRO) and repeated this diet while participating in the Curves with Zumba program 3dwk. Remaining subjects followed the W pointbased diet program, received weekly counseling, and were encouraged to exercise. DEXA body composition with VAT was determined at 0 & 16 wks. MANOVA revealed a significant time (p<0.001) and group x time (p=0.035) effect. Both groups lost a similar amount of weight (W 6.34, C 4.84 kg, p=0.17), fat mass (W 3.16, C 5.96 kg, p=0.13), and VAT mass (W 98468, C 240445 g, p=0.26). Subjects in the C group experienced greater gains in FFM (W 3.35.9. C +1.24.1 kg, p=0.002) and tended to lose more body fat (W 1.18, C 4.55.5 %, p=0.07). Changes in VAT mass significantly correlated with changes in weight (r=0.38), fat mass (r=0.73), FFM (r=0.62), and body fat (r=0.64). Results indicate that different types of diets can differentially affect changes in body composition and VAT.Grant Funding Source: Curves International, Inc. (Waco, TX)
