Degree of obesity. There are a number of physiological factors—e.g. the ability to oxidise fat in response to exercise, and different muscle fibre types12—which distinguish the obese from the merely overfat, or the lean. These are also known to affect the fat loss response to exercise. Due to physiological factors that have either caused or resulted from obesity and which are as yet largely unknown, those prone to weight gain may have a greater craving for fatty foods after exercise and may store fat more readily than those not disposed to overfatness.

Exercise responses can also be quite different. Because of the lower levels of aerobic capacity and different rates of substrate utilisation in the more obese, long duration activity and increased ‘incidental’ exercise at a much lower intensity than is used for the leaner and more fit is recommended for optimal fat burning. There is a case for regarding the morbidly obese as a different population to normal and overfat people in their responses to exercise. The physiological changes that occur with this type of obesity are most likely to be genetically based or associated with long term obesity, and this may provide dues as to the type of exercise and dietary prescription required for optimal fat losses in the future.


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Posted on Friday, May 8th, 2009 at 1:13 pm and is filed under Weight Loss. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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