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Calcium and vitamin D supplementation is associated with decreased abdominal visceral adipose tissue in overweight and obese adults
Rosenblum, Jennifer L.
Castro, Victor M.
Moore, Carolyn E.
Kaplan, Lee M.
Article from Journal - ilmiah internasional
The American Journal of Clinical Nutrition vol. 97 no. 01 (Jan. 2013)
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Background: Several studies suggest that calcium and vitamin D (CaD) may play a role in the regulation of abdominal fat mass. Objective: This study investigated the effect of CaD-supplemented orange juice (OJ) on weight loss and reduction of visceral adipose tissue (VAT) in overweight and obese adults (mean ± SD age: 40.0 ± 12.9 y). Design: Two parallel, double-blind, placebo-controlled trials were conducted with either regular or reduced-energy (lite) orange juice. For each 16-wk trial, 171 participants were randomly assigned to 1 of 2 groups. The treatment groups consumed three 240-mL glasses of OJ (regular or lite) fortified with 350 mg Ca and 100 IU vitamin D per serving, and the control groups consumed either unfortified regular or lite OJ. Computed tomography scans of VAT and subcutaneous adipose tissue were performed by imaging a single cut at the lumbar 4 level. Results: After 16 wk, the average weight loss (~2.45 kg) did not differ significantly between groups. In the regular OJ trial, the reduction of VAT was significantly greater (P = 0.024) in the CaD group (-12.7 ± 25.0 cm2) than in the control group (-1.3 ± 13.6 cm2). In the lite OJ trial, the reduction of VAT was significantly greater (P = 0.039) in the CaD group (-13.1 ± 18.4 cm2) than in the control group (-6.4 ± 17.5 cm2) after control for baseline VAT. The effect of calcium and vitamin D on VAT remained highly significant when the results of the 2 trials were combined (P = 0.007). Conclusions: The findings suggest that calcium and/or vitamin D supplementation contributes to a beneficial reduction of VAT.
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