Certain obese men can increase their levels of "good" cholesterol through regular extended endurance exercise, a new study has found.
The study results are encouraging because men of normal weight and low triglyceride levels (a type of fat associated with heart disease) and low levels of "good" (HDL) cholesterol may find it difficult to increase their levels of HDL cholesterol. Low HDL levels can increase the chances of heart disease.
Investigators studied 200 men who exercised for 50 minutes a day, approximately three times per week. The men were divided into four groups based on triglyceride and HDL levels.
All four groups experienced small reductions in body fat during the training period, with the greatest losses seen in men with high triglycerides and low HDL cholesterol.
Men whose only abnormality was a low HDL level showed no improvement in their HDL levels, the researchers report. However, men with high triglycerides and low HDL showed modest (about 5%) improvements in their HDL levels.
Arteriosclerosis, Thrombosis, and Vascular Biology July 2001;21:1226-1232, 1097-1098
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