Washington: Exercise combined with healthy eating can reduce body fat and preserve muscle in adults better than diet alone, researchers of a new study have found. The study was funded and conducted by National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), part of the National Institutes of Health.NIDDK senior investigator Kevin Hall, Ph.D., analysed the individual effects of daily strenuous exercise and a restricted diet by examining data from 11 participants from the reality television program “The Biggest Loser.” The program shows obese adults losing large amounts of weight over several months. Participants were initially isolated on a ranch followed by an extended period at home.Researchers measured body fat, total energy expenditure and resting metabolic rate — the energy burned during inactivity — three times: at the start of the program, at week 6, and at week 30, which was at least 17 weeks after participants returned home.Participation in the program led to an average weight loss of 128 pounds, with about 82 percent of that coming from body fat, and the rest from lean tissue like muscle. Preserving lean tissue, even during rapid and substantial weight loss, helps maintain strength and mobility and reduces risk of injury, among other benefits.
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