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Effects of the Curves® fitness & weight loss program II: resting energy expenditure
Author(s) -
Li R,
Kerksick C,
Campbell B,
Wilborn C,
Marcello B,
Ferreira M,
Wismann J,
BeckhamDove J,
Galbreath M,
Harvey T,
La Bounty P,
Sharp K,
Parker A,
Nassar E,
Iosia M,
Cooke M,
Rasmussen C,
Greenwood M,
Kreider R
Publication year - 2007
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.21.6.lb48-a
Subject(s) - weight loss , medicine , calorie , zoology , body weight , repeated measures design , endocrinology , energy expenditure , analysis of variance , calorie restriction , obesity , biology , mathematics , statistics
Weight loss is often accompanied by reductions in REE leading to weight regain. Resistance‐exercise has been suggested to counteract this effect. 466 sedentary women (45±11 yrs, 163±7 cm; 93±17 kg; 45±5% body fat) were assigned to a control group (C), an exercise & no diet group (E); an exercise & high calorie diet (HCD) group (2,600 kcals/d for 1 wk at 55% C, 15% P, 30% F; 9 wks at 40% C, 30% P, 30% F; 4 wks at 55% C, 15% P, 30% F); or, a low calorie high carbohydrate (HCHO), high protein (HP), or very high protein (VHP) diet. Diets consisted of 1,200 kcal/d for 1‐wk and 1,600 kcal/d for 9 wks and contained 30% fat, 40–55% CHO on the HCD and HCHO diets and 50–63% P on the HP and VHP diets. During the maintenance phase, subjects ingested 2,600 kcal/d and dieted for 3‐d (1,200 kcal/d) only if they gained weight (3 lbs). Subjects participated in a supervised Curves fitness program 3‐d per wk. Body weight and fasting REE measurements were obtained at 0, 10, and 14 weeks. Data were analyzed by repeated measures ANOVA and are presented as means ± SD changes from baseline for the C, E, HCD, HCHO, HP and VHP groups, respectively. After 10 wks, subjects significantly lost weight (−0.7±2.3; −0.5±1.9; −1.7±4.2; −4.0±3.6; −3.9±3.4; −4.9±3.8 kg) while REE was maintained or increased (−0.3±3.3; 0.4±2.0; 2.4±3.1; 0.5±2.5; 0.8±2.7; 0.0±2.1 kcal/d/kg). Weight loss (0.5±2.9; −0.4±2.3; −2.4±5.2; −4.1±3.8; −4.2±3.8; −5.0±4.3 kg) and REE were maintained during the maintenance phase (−0.8±1.8; −0.2±2.7; 3.1±3.5; 0.8±2.5; 1.4±4.1; 0.5±2.4 kcal/kg/d). Results indicate that it is possible to experience significant weight loss without reducing REE.