The aim of this study is to investigate the effects of classic strength training combined with six-week plyometric muscle training on lower extremity muscle areas and strength development. This study started with 17 healthy male students at Port-Said University, but it was completed with 11 students who participate in the activities of the Faculty. The mean age of the subjects was 18.03 ± 1.37 years. At the beginning of six-week training program, certain parameters including body height, weight, calf and thigh skinfold and girds measurements were taken. In addition, vertical jump, 10 sec. multiple vertical jump, standing long jump, leg and back strength were measured. The same measurements were repeated upon the completion of the six-week strength training with plyometric exercise. The comparison of pre- and post-measurements demonstrated that vertical jump and leg strength significantly increased (p <0.01). Similarly, thigh and calf muscle areas were also significantly improved (P <0.01) after the six-week plyometric and strength training for legs.