This study compared the physical performance of 10 female volleyball players from a NCAA division III University. The investigator collected and assessed data to determine the effect that two plyometric programs had on vertical jumping ability. One program was conducted on land while another was conducted in the water. A pretest and posttest was conducted on height, weight, reach and vertical jump. The players, aged 18 to 21 years, performed plyometrics (jump training) on land or in a swimming pool for approximately 30 minutes, 2 times per week, for 7 weeks. Statistics were computed using a Sigma - Stat Program at the Ball State University Human Performance Laboratory. An inspection of the data revealed no significant differences pretest to posttest in the land and water jump training groups. In addition, significant differences between the land and water posttest scores were not found.