Effect of Exercise Training Intensity on Abdominal Visceral Fat and Body Composition

作者：Brian A. Irving, Christopher K. Davis, David W. Brock, Judy Y. Weltman, Damon L. Swift, Eugene J. Barrett, Glenn A. Gaesser, Arthur Weltman · 发表于：Medicine & Science in Sports & Exercise · 年份：2008 · DOI：10.1249/mss.0b013e3181801d40 · 被引用次数：387 · 研究领域：Body Composition Measurement Techniques、Cardiovascular and exercise physiology、Diabetes, Cardiovascular Risks, and Lipoproteins

UNLABELLED: The metabolic syndrome is a complex clustering of metabolic defects associated with physical inactivity, abdominal adiposity, and aging. PURPOSE: To examine the effects of exercise training intensity on abdominal visceral fat (AVF) and body composition in obese women with the metabolic syndrome. METHODS: Twenty-seven middle-aged obese women (mean +/- SD; age = 51 +/- 9 yr and body mass index = 34 +/- 6 kg x m(-2)) with the metabolic syndrome completed one of three 16-wk aerobic exercise interventions: (i) no-exercise training (Control): seven participants maintained their existing levels of physical activity; (ii) low-intensity exercise training (LIET): 11 participants exercised 5 d x wk(-1) at an intensity < or = lactate threshold (LT); and (iii) high-intensity exercise training (HIET): nine participants exercised 3 d x wk(-1) at an intensity > LT and 2 d x wk(-1) < or = LT. Exercise time was adjusted to maintain caloric expenditure (400 kcal per session). Single-slice computed tomography scans obtained at the L4-L5 disc space and midthigh were used to determine abdominal fat and thigh muscle cross-sectional areas. Percent body fat was assessed by air displacement plethysmography. RESULTS: HIET significantly reduced total abdominal fat (P < 0.001), abdominal subcutaneous fat (P = 0.034), and AVF (P = 0.010). There were no significant changes observed in any of these parameters within the Control or the LIET conditions. CONCLUSIONS: The present data indicate that ...