Effects of Combined Aerobic and Resistance Exercise Training on Cardiovascular Fitness in HIV-Infected Men

Abstract

PURPOSE: To determine the effects of exercise training on cardiovascular fitness in HIV-infected men. METHODS: Sixteen HIV infected male subjects were recruited for this study and randomized into either the exercise (EX) group or control (CON) group. The EX subjects participated in moderate intensity resistance training at 60% of their 3-rep max, as well as aerobic exercise on a treadmill or bike for 30 minutes at 60% of their age predicted heart rate max for a total of 6 weeks (twice per week). The CON group received standard care during the same 6 week session and did not increase their activity level. Each subject completed a maximal exercise test pre and post intervention where blood pressure, heart rate, and time to fatigue were recorded. RESULTS: The EX group showed a significant increase in time to fatigue (p < .05) and a significant decrease in exercise heart rate (p < .05) following the six week intervention, whereas the CON group showed no significant change in time to fatigue or heart rate. Blood pressure was not affected by training in either group. CONCLUSIONS: These data show that HIV infected individuals can increase cardiovascular fitness after engaging in moderate intensity resistance and aerobic exercise. Further, exercise training does not appear to have a significant effect on blood pressure in this population. The results suggest that HIV infected individuals who engage in moderate intensity resistance and aerobic training can obtain beneficial results in cardiovascular fitness. This is supported by the NIH/NCMHD, the American College of Sports Medicine, and the Arnold School of Public Health.