Division 1 football players training in a compensatory acceleration style (CAT) upper body strength regimen were compared to a traditional regimen in their off-season. The CAT group was instructed to perform the positive rep as explosively as possible. The traditional group performed repetitions at a traditional tempo. At the end of both off-season training programs, both power and strength were assessed. Power was tested with a seated medicine ball throw and a force platform plyometric push-up test. Strength was assessed by a one rep max in the bench press. Both groups increased strength and power. The group that trained in a Compensatory Acceleration Training (CAT) style improved their bench press by nearly double the amount of the traditional group. Average power, as expected, increased significantly more in the group that trained explosively. Jones, K. K., Hunter, G. G., Fleisig, G. G., Escamilla, R. R., & Lemak, L. L. (1999). The effects of compensatory acceleration on upper-body strength and power in collegiate football players. Journal of Strength & Conditioning Research (Allen Press Publishing Services Inc.), 13(2), 99-105. Practical Application Fred Hatfield was ahead of his time advocating Compensatory Acceleration Training. It is simply superior! Training adaptations are not just a result of weight on the bar. Adaptations from training are a byproduct of tension and duration. You respond to how much force produced, how fast the force was produced, how long you produced it, and how many times you produced it. Force=mass x acceleration. More tension is result of greater bar speed. Maximal strength training and power adaptations can result from lifting weights with maximal force; one more reason to compensatorily accelerate weights.