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Effects of calcium supplementation in post‐menopausal women participating in the Curves® fitness & weight loss program I: Body composition & bone density
Author(s) -
Rasmussen C,
Galbreath M,
Campbell B,
Marcello B,
Beckham J,
Kreider R
Publication year - 2006
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.20.5.lb92
Subject(s) - weight loss , medicine , overweight , calcium , endocrinology , placebo , zoology , analysis of variance , repeated measures design , fat mass , body weight , obesity , biology , statistics , alternative medicine , mathematics , pathology
140 overweight post‐menopausal women were randomly assigned to an exercise & normal diet group (E) or a high carbohydrate (HC) or high protein (HP) diet with exercise group. Diets consisted of 1,200 kcal/d for 1‐wk and 1,600 kcal/d for 9 wks of either HC (55% C, 15% P, 30% F) or HP (7–15% C, 55–63% P, 30% F). Thereafter, subjects ingested 2,600 kcal/d (55% C, 15% P, 30% F) and dieted for 2‐d (1,200 kcal/d) only if they gained 3 lbs. Subjects participated in a supervised Curves fitness program 3‐d/wk. In addition, subjects were randomly assigned in a double blind fashion to ingest a placebo (P) or one of three types of calcium supplements (Ca) providing 800 – 1,000 mg/d of calcium. DEXA measurements were obtained at 0, 10, and 14 weeks and were analyzed by repeated measures ANOVA. Data are presented as means ± SD changes from baseline for the E, HC, and HP groups, respectively. After 10 wks, subjects who dieted experienced a significantly greater (p<0.05) loss in body mass (−0.5±1.5; −3.9±3.3; −4.3±4.8 kg) and fat mass (−0.7±2.1; −3.2±2.5; −3.1±2.7 kg). Weight loss (−0.7±1.9; −4.9±4.7;− 4.4±5.3 kg) and fat mass loss (−1.1±2.2; −3.5±3.1;−3.9±5.0 kg) was continued during the maintenance phase. Weight loss tended to be greater (p=0.10) in subjects taking Ca after 10 wks (P −2.6±2.9; Ca − 3.2±4.2 kg). Significant differences were also observed among types of Ca supplements in changes in fat mass and body fat. Bone density tended to be greater (p<0.10) in the Ca group after 10‐wks. Results indicate that the Curves program is effective to promote weight loss in post‐menopausal women and that Ca supplementation may influence weight loss during dieting.