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Exercise Prevents Weight Gain by Reducing Appetite and Burning Fat Before Carbs
|Written by Administrator|
Exercise helps prevent weight regain after dieting by burning fat before burning carbohydrates, and by reducing appetite according to a new study with rats conducted at the University of Colorado Denver.
The study found that by burning fat first and storing carbohydrates for use later in the day slows weight regain and may minimize overeating by signaling a feeling of fullness to the brain. The researchers also discovered that exercise prevents an increase in the number of fat cells that occurs during weight regain. This discovery challenging the conventional wisdom that the number of fat cells is set and cannot be altered by dietary or lifestyle changes.
These coordinated physiological changes in the brain and the body lower the ‘defended' weight, that is, the weight that our physiology drives us to achieve, and suggest that the effects of on these physiological processes may make it easier to stay on a diet and eat healthy .
The study is "Regular exercise attenuates the metabolic drive to regain weight after long term weight loss." Paul S. MacLean, Janine A. Higgins, Holly R. Wyatt, Edward L. Melanson, Ginger C. Johnson, Matthew R. Jackman, Erin D. Giles, Ian E. Brown and James O. Hill, all of the University of Colorado Denver, conducted the study. The American Physiological Society published the research in the American Journal of Physiology - Regulatory, Integrative and Comparative Physiology.
Exercise and Weight Gain
Weight gain is, on the surface, remarkably simple, occurring when the calories consumed exeeds the calories expended. On closer examination, the process is remarkably complex. Laboratory, animals eat according to physiological signals that may suppress appetite or arouse the desire to eat. These signals are relatively weak in humans, as their intake is largely influenced by psychological, cognitive and lifestyle factors. After dieting, however, the physiological signals emerge to play a more substantial role in controlling intake. Being persistently hungry after losing weight with restricted diets is a big part of the weight regain problem. Most people are unable to ignore this physiological cue and are pushed by their biology to overeat and regain the weight they worked so hard to lose.
Some people are successful at keeping the weight off, and those tracked by The National Weight Control Registry share a number of common characteristics, including regularly exercising. The aim of this investigation was to uncover how exercise affects the body's physiology to minimize weight regain.
Exercise and Weight Gain Study
The researchers used obesity-prone rats. For the first 16 weeks, the rats ate a high-fat diet, as much as they wanted, and remained sedentary. They were then placed on a diet . For the following two weeks, the animals ate a low-fat and low-calorie diet, losing a...
Moderate Exercise Yields Big Benefits
|Written by Mayo Clinic|
What’s the key to looking and feeling better and enhancing your health? Exercise. A new study suggests the much-touted moderate-intensity walk should translate to about 100 steps per minute, or 3,000 steps in 30 minutes.
Moderately strenuous exercise, about 30 minutes a day, can lead to enormous benefits in terms of your mood, health, weight and the ability to live an independent and fulfilling life. Moderately strenuous exercise has been shown to prevent many diseases and conditions and increase your quality of life. The exercise doesn’t need to be athletic or difficult. Studies have shown that simply walking at a brisk pace for 30 minutes or more on most days can lead to significant health benefits . Add simple strengthening exercises two or three times a week and the benefits are even greater.
Accroding to the Mayo Clinic some of the main benefits of 30 minutes of exercise a day include: