Diet and Body Composition
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Obesity is the presence of excess body fat and is associated with a variety of medical conditions which increase morbidity and mortality. Millions of individuals participate in weight-reduction programmes which include reduced calorie diets and may also include exercise. Very low calorie diets (VLCD) of 400 to 800 kcal/day appear attractive as they generally show an increase in weight loss from 0.2 to 0.5 kg/week found with the traditional diet to 1.5 to 2.0 kg/week. Early use of very low calorie diets with poor quality protein and loose medical supervision resulted in about 60 deaths, many of which were attributed to loss of lean body mass and in particular, cardiac muscle atrophy. Although current very low calorie diets are presumed safe, concern regarding preservation of lean body mass (LBM) remains. Investigators have used exercise to slow the depletion of lean body mass during very low calorie diets; however, the results are not conclusive. A host of different methodologies and questionable documentation and design of exercise protocols precludes a definitive statement for the benefits of exercise during very low calorie diets for the purpose of LBM retention.
KeywordsBody Composition Lean Body Mass Obese Individual Endurance Exercise Ketogenic Diet
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- Dalle Grave R, Bussinello P, Zeni A. Short term effect of a very low calorie diet on body composition and fat distribution. International Journal of Obesity 13(Suppl. 2): 177–178, 1989Google Scholar
- Fleck SJ, Kraemer WJ. Resistance training: physiological responses and adaptations. Physician and Sportsmedicine 16: 108–124, 1988Google Scholar
- Garnett ES, Barnard DL, Ford J, Goodbody RA, Woodehouse MA. Gross fragmentation of cardiac myofibrils after therapeutic starvation for obesity. Lancet 1: 915–917, 1969Google Scholar
- Genuth SM, Vertes V, Hazelton I. Supplemented fasting in the treatment of obesity. In Bray G (Ed.) Recent advances in obesity research-II, John Libbey & Company Ltd, London, 1978Google Scholar
- Keys A, Brozek J, Mickelsen O, Taylor HL. The biology of human starvation, Vol. 1, University of Minnesota Press, Minneapolis, 1950Google Scholar
- Zuti WB, Golding LA. Comparing diet and exercise as weight reduction tools. Physician and Sportsmedicine 4: 49–53, 1976Google Scholar