(Adams et al. 1992) also indicates that the combined method of training is more effective for enhancing vertical jump performance than either weight training or plyometric training alone (Harmon 1990). Fatouros et al. (2000) investigated how variables of vertical jumping performance were affected by a 12-week plyometric training program, a 12-week weight training program, and a 12-week combination training program. They concluded that both the individual plyometric and weight training programs increased vertical jumping performance, but the combi- nation program showed the greatest improvement on vertical jumping performance. Lyttle et al. (1996) compared the performance benefits derived from maximal power training and a combined weight/plyometric training program. The researchers concluded that the two training modali- ties produced significant improvements in selected performance tests; however, the training groups did not differ significantly on any of these measures.