Archive for July, 2009
Exercise Fuels Fat-Burning Fires
Posted by jodiac on Jul.16, 2009, under Nutrition Facts Comments Off
If you indulge into high-fat foods occasionally you may be able to avoid weight gain by staying active. A recent study from the University of Wisconsin in Madison found that regular exercise helps the body fire up metabolism more quickly to adjust for an increase in fat intake.
The researchers assigned a group of 10 sedentary women to exercise at two different intensity levels as they switched from a low-fat diet (with 30 percent of calories from fat) to a high fat diet (50 percent of calories from fat). The team then compared the volunteers’ ability to burn calories when the women were sedentary when they burned up 150 calories during an hour on a stationary bicycle, or when they burned 300 calories on the exercise bike over a two-hour period. The more each woman exercised, the faster she was able to burn fat calories after switching to a four-day high fat diet. The team reported in the American Journal of Clinical Nutrition.
It’s not clear why exercise helped the women burn more fat calories. Dietary fat is often stored in fatty tissue, rather than sent to muscle tissue where it is used for energy. Working out may have helped shift dietary fat toward more metabolically active tissues, like muscle, and could have increased the activity of fat-burning enzymes in muscles, the researchers speculate. So another good reason to get a move on and control one’s own health destiny and at the same time enjoy the taste of favorite dishes which many avoid in order to look good.
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