. SPORTS MEDICINE :PHYSICAL EXERCISE AND FITNESS : MEDICAL: METABOLISM:
Weighing the Evidence on Exercise Weighing the Evidence on Exercise By GRETCHEN REYNOLDS Published: April 12, 2010 New York TimesMagazine <http://www.nytimes.com/2010/04/18/magazine/18exercise-t.html>
How exercise affects body weight is one of the more intriguing and vexing issues in physiology. Exercise burns calories, no one doubts that, and so it should, in theory, produce weight loss, a fact that has prompted countless people to undertake exercise programs to shed pounds. Without significantly changing their diets, few succeed. Anecdotally, all of us have been cornered by people claiming to have spent hours each week walking, running, stair-stepping, etc., and are displeased with the results on the scale or in the mirror, wrote Barry Braun, an associate professor of kinesiology at the University of Massachusetts at Amherst, in the American College of Sports Medicines February newsletter.
But a growing body of science suggests that exercise does have an important role in weight loss. That role, however, is different from what many people expect and probably wish. The newest science suggests that exercise alone will not make you thin, but it may determine whether you stay thin, if you can achieve that state. Until recently, the bodily mechanisms involved were mysterious. But scientists are slowly teasing out exercises impact on metabolism, appetite and body composition, though the consequences of exercise can vary. Womens bodies, for instance, seem to react differently than mens bodies to the metabolic effects of exercise. None of which is a reason to abandon exercise as a weight-loss tool. You just have to understand what exercise can and cannot do.
In general, exercise by itself is pretty useless for weight loss, says Eric Ravussin, a professor at the Pennington Biomedical Research Center in Baton Rouge, La., and an expert on weight loss. Its especially useless because people often end up consuming more calories when they exercise. The mathematics of weight loss is, in fact, quite simple, involving only subtraction. Take in fewer calories than you burn, put yourself in negative energy balance, lose weight, says Braun, who has been studying exercise and weight loss for years.
-------------------------------------- The complete article may be read at the URL above. Some Selected Related Resources: UMASS Amherst: Energy Metabolism Laboratory Lab Director: Barry Braun, Ph.D. Lab Medical Advisor: Stuart Chipkin, M.D. <http://people.umass.edu/braunlab/index.htm>The goal of the Energy Metabolism Laboratory is "Metabolic Rehabilitation". To that end, we are working on ways to optimize the design of an exercise "drug" to enhance metabolic health, irrespective of body composition.
Regular exercise improves cardiometabolic health and reduces risk for chronic disease. Habitual physical activity requires regular applications of individual exercise bouts. Each individual bout can be viewed as a drug, meaning; when taken at a sufficient dose, exercise has effects on metabolic health that peak and then diminish over time, requiring a subsequent dose to maintain the beneficial effects. In this context, each individual dose of exercise becomes important.
Tailoring the intensity, duration, nutritional environment and interactions with other medications to achieve the maximal benefit will likely have the biggest impact on metabolic health.
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Swinburn, BA Journal: The American journal of clinical nutrition ISSN: 0002-9165 Date: 2006 Volume: 83 Issue: 4 Page: 859 WEBBIB0910 Sincerely, David Dillard Temple University (215) 204 - 4584 jwne@xxxxxxxxxx <http://daviddillard.businesscard2.com> Net-Gold <http://groups.yahoo.com/group/net-gold> Index: <http://tinyurl.com/myxb4w> <http://listserv.temple.edu/archives/net-gold.html> <http://groups.google.com/group/net-gold?hl=en> General Internet & Print Resources <http://guides.temple.edu/general-internet> COUNTRIES <http://guides.temple.edu/general-country-info> EMPLOYMENT <http://guides.temple.edu/EMPLOYMENT> TOURISM <http://guides.temple.edu/tourism> DISABILITIES http://guides.temple.edu/DISABILITIES INDOOR GARDENING <http://tech.groups.yahoo.com/group/IndoorGardeningUrban/> Educator-Gold <http://groups.yahoo.com/group/Educator-Gold/> K12ADMINLIFE <http://groups.yahoo.com/group/K12AdminLIFE/> RUSSELL CONWELL CENTER SUBJECT GUIDE http://guides.temple.edu/Russell-Conwell-Center THE COLLEGE LEARNING CENTER <http://tinyurl.com/yae7w79> Nina Dillard's Photographs on Net-Gold http://tinyurl.com/36qd2o and also http://gallery.me.com/neemers1 Net-Gold Membership Required to View Photos on Net-Gold Twitter: davidpdillard Bushell, R. & Sheldon, P. (eds), Wellness and Tourism: Mind, Body, Spirit, Place, New York: Cognizant Communication Books. Wellness Tourism: Bibliographic and Webliographic Essay David P. Dillard <http://tinyurl.com/p63whl> <http://tinyurl.com/ou53aw> INDOOR GARDENING Improve Your Chances for Indoor Gardening Success http://tech.groups.yahoo.com/group/IndoorGardeningUrban/ http://groups.google.com/group/indoor-gardening-and-urban-gardening SPORT-MED https://www.jiscmail.ac.uk/lists/sport-med.html http://groups.google.com/group/sport-med http://groups.yahoo.com/group/sports-med/ http://listserv.temple.edu/archives/sport-med.html Health Diet Fitness Recreation Sports Tourism http://health.groups.yahoo.com/group/healthrecsport/ http://groups.google.com/group/healthrecsport http://listserv.temple.edu/archives/health-recreation-sports-tourism.html Please Ignore All Links to JIGLU in search results for Net-Gold and related lists. The Net-Gold relationship with JIGLU has been terminated by JIGLU and these are dead links. http://groups.yahoo.com/group/Net-Gold/message/30664 http://health.groups.yahoo.com/group/healthrecsport/message/145 .