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The fat in the abdominal region, measured by magnetic resonance imaging, was reduced by 20 percent among exercisers. The group that was not exercising had either no or significantly less improvement than the exercising group.Bone scans, using an X-ray machine called DXA, were used to assess bone mineral lowfat density. Measurements were taken of the total skeleton and in areas most vulnerable to bone loss and subsequent fracture, including three locations on the hip, and one in the spine. In both men and women who lowfat exercised and lost weight, overall bone density did not change, although results were mixed for women in specific sites of the hip. However, those who showed the greatest gains in fitness had modest gains in bone density at several sites, and loss of body fat was not associated with bone loss.According to Stewart, an increase in bone mineral density among older exercisers has been observed in previous studies, but this increase was lacking in the current study because the fitness program was probably of too low intensity or too short in duration.“Older
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