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Lead Stories: Saturday, August 30, 2008

Q&A: Is it true that weight loss during exercise is normal?

Posted December 29th, 2007 at 2:16 PM by Martin Kennedy

Section: Health & Fitness, Injury & Rehab, Exercise

If you weigh yourself before and after an hour or two of exercise, the difference is likely to be fluid loss. However, in events lasting several hours or even several days, measurable fat loss can occur. At a competitive 12-hour indoor stationary bicycle marathon, one athlete took fluids and food throughout the entire competition, and still lost 2.64 pounds (Schweizerische Rundschau für Medizin Praxis, July 2007).

Of this weight loss, 1.98 pounds was due to loss of fat. His calculated muscle weight increased by 1.46 pounds due to damage to the muscle cells, which results in fluid retention in the cells.
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TFS Media’s Crib Sheet on Carbohydrate Cycling

Posted November 27th, 2007 at 11:05 AM by Shannon Martin

Section: Nutrition, Healthy Eating, Race Prep & Recov, Health & Fitness, Exercise

One of the more popular diet methods out there for athletes looking to improve performance is carbohydrate cycling. It is used by athletes with specific training goals and advising from experts. Not only does it help to ensure that your leptin levels (a hormone that regulates body fat and calorie intake) do not change drastically, but it helps keep energy levels up as well.

The body prefers to work off carbohydrates during exercise. While it can run effectively on fat if you work at a lower intensity, as soon as you try and perform high intensity work you will find yourself becoming fatigued, because your body needs glucose to rev up its engine for harder workouts.

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