The hypothesis was that Groups 1-4 would show a significant reduction in systolic and diastolic blood pressure and an increase in HDL-cholesterol compared to the usual care control group. A second hypothesis was that that there would be significant main effects for both frequency and intensity, with the higher levels of each producing greater improvement on the major outcome variables compared to the lower levels of each dose. The study also planned to determine the minimal dose response to exercise necessary to elicit significant improvement in cardiovascular and behavioral health factors. Finally, the project included examination of the effects of age and level of initial test values on outcome variables to determine if their interactions affected the results of the intervention.