Comparative effectiveness of two popular weight loss programs in women II: metabolic markers
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abstract
42 sedentary women (337 yrs, 1647 cm; 9319 kg; 467% body fat, 356 kg/m2) were randomized to participate in the Curves (C) or Weight Watchers (W) 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). 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. Fasting blood samples were obtained at 0, 4, 10, & 16 wks and analyzed by MANOVA. Both programs promoted significant decreases (p<0.05) in total CHL (5.911%) and LDLc (8.817%). Significant interactions were seen in changes in total CHL (C 4.012, 1.99, 2.211; W 5.98, 7.110, 9.011%, p=0.03), LDLc (C 4.018, 1.815, 3.219; W 5.812, 6.815, 13.415%, p=0.03), HDLc (C 3.512, 0.110, 1.616; W 9.311, 9.912, 0.113%, qp=0.002), the ratio of CHL:HDL (C 1.711, 0.49, 1.912; W 5.113, 4.213, 7.910 %, qp=0.009), TG (C 6.327, 10.313, 5.422; W 4.125, 3.431, 0.243%, cp=0.03), and blood glucose (C 2.115, 0.713, 2.612; W 2.27, 3.210, 2.18%, qp=0.05). Results suggest that adherence to the W program may promote more favorable changes in blood lipids than cycling caloric intake. However, participating in the C structured diet and exercise program had more beneficial effects on HDLc and TG levels.
