®McClenton et al. (2008) compared the effects of a twice-weekly, 6-week depth jump training program vs. a VertiMax® basic training program with recreationally trained subjects. They concluded that the depth jump training program significantly increased their vertical jump, while the Verti- Max® group did not. Conversely, Rhea, Peterson, Lunt, Ayllon, et al. (2008), using collegiate athletes in one study and high school athletes in a second, determined that the VertiMax® demonstrated an added benefit in conjunction with traditional preparatory strength and conditioning modalities, when compared with strength/power training alone. In both studies a substantial effect size was shown within the VertiMax® training groups, 0.54 and 0.95. The present study wishes to add to the current body of literature on the VertiMax® to substantiate its effectiveness as a training modality for improving vertical jump and, thus, lower body power