Friday, 13 January 2012

Limitations of Exercises

limitation
There are many aspects to the issue of exercise in relation to general health, body building and weight loss. It is clear that complete lack of exercise leads to shrinking of muscles and eventual loss of mobility, as the structures that support your joints, such as ligaments, joint capsules and muscles gradually lose their flexibility and become stiff. Just a few days of complete bed rest from illnesses like the Flu can cause severe immobility in most people, especially older ones.
We are meant to be mobile, and that means all our joints must be “mobilized” daily through some form of activity, such as walking, light chores, handling, lifting
and carrying shopping bags, packages, or the like, all really akin to mild exercise. Consider the “exercises” our ancestors engaged in centuries ago. They moved around at low speed, lifting and carrying things, with only occasional short periods of maximal effort. So it seems clear that most exercise is good for your health. But what about weight loss and fat loss? Does exercise
really help?

A study by Louisiana State University(4)placed over 450 overweight women into four groups. Three of the groups worked out with a personal trainer for 1, 2 or 3 hours per week for 6 months. The fourth group continued their usual physical activity. All groups lost weight! But the groups that worked out with a trainer for 6 months lost only slightly more than the fourth or control group. Many women in all the exercise groups gained weight!

The Cochrane Collaboration (5) studied 43 trials of diet or exercise for weight loss. When exercise + diet was compared to diet alone, the exercise group lost
only 2 lbs. more! However, high intensity exercise was able to increase the weight loss by another 3 lbs.

General exercise alone is quite ineffective for weight loss, and in many cases it can be counterproductive. But exercise is important to your health, as it effectively improves many risk factors for disease. Apparently, for exercise to be of help in losing fat, it must be the right kind. So what is the right kind? Let’s
look at several types.

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