This study examined the effects of different exercise programs on blood lipids and cholesterol levels. 111 sedentary subjects with dyslipidemia were randomly assigned to a control group or one of three exercise groups that varied in intensity (high vs moderate) and amount (high vs low) of weekly exercise. The results showed that exercise significantly reduced small LDL particles and increased average LDL size compared to the control group. The high amount, high intensity group showed the most significant improvement in HDL cholesterol concentration. Overall, the study found that a higher amount of exercise was more beneficial than a lower amount or no exercise for improving lipid profile, though the optimal intensity remains unclear.