Jumping ability is a defining characteristic of an athlete’s performance during volleyball, with greater ability providing a competitive advantage. Current research focuses on combining plyometric, resistance, and power exercises to increase jumping performance. However, additional characteristics have yet to be evaluated fully, including skeletal alignment and the role of alignment in the kinetic change. The purpose of this study was to examine the effects of an eight-week group training intervention program on improving anterior pelvic tilt and its effect on vertical jump kinetics and countermovement jump height in women volleyball players compared to a control group with a volume-matched program. The study was a pre-test post-test prospective randomized control design. Thirteen women volleyball athletes were recruited for thie pre-test post-test prospective randomized control study. Participants were randomly assigned to a pelvic tilt training group or control group. Participants completed 15 training sessions over five weeks and data were collected for (1) pelvic tilt, (2) peak ground reaction force during takeoff, (3) time-to-takeoff, (4) flight time, (5) jump height, (6) peak power, (7) propulsive impulse, (8) eccentric impulse, (9) time-to-stabilization, and landing (10) peak ground reaction force during. A MANOVA was used to assess pre- and post-test differences in treatment effect for peak power, peak ground reaction force on landing, and time to stabilization. Additionally, a paired T-test was used to assess changes in pelvic tilt, peak ground reaction force on takeoff, time to takeoff, flight time, jump height, propulsive impulse, and eccentric impluse. There was no significant difference in any of the varilables assessed. The use of core-specific exercises for decreasing pelvic tilt and improving kinetic measzures during a countermovement jump demonstrated non-significant improvements in anterior pelvic tilt and vertical jump kinetics. Using a pelvic tilt training program altered anterior pelvic tilt and kinetic variables of the countermovement jump, albeit not significantly, while a volume match core program produced similar improvement in anterior pelvic tilt and kinetic variables in the control group.
