In brief: Training on rebound exercise equipment (minitrampolines) is a popular new approach to aerobic conditioning, but its physiological benefits have been a matter of debate. This study was designed to determine if rebound aerobic dancing is an effective way to improve aerobic capacity and body composition. A group of previously sedentary college women who trained on rebound equipment three times a week for eight weeks showed a 9% increase in max but no significant change in percent body fat. A control group showed no significant changes. The improvement was similar to results produced by conventional aerobic dance programs of like intensity but moderate in comparison to other established forms of aerobic exercise.