Multidirectional ground reaction forces (GRFs) and jump tests within baseball pitchers provide insight into athletic ability and coordination to produce lower-body force and power. Lower-body power is a biomechanical feature that denotes physiological capacity through dynamic and passive tissue stretch-shortening in transferring energy from the ground through the kinetic chain. Optimized lower-body power may lessen the magnitude of forces on the upper extremity. Insufficient lower-body power may create a greater risk of upper-body injury. Lower-body power and its relationship to ball velocity have been minimally investigated, yet some research points to a correlation between jumping ability and fastball velocity. Because pitching is unilateral, practitioners should consider unilateral jumps to determine the extent of bilateral asymmetry or stride to drive leg differences that can guide training to remediate deficiencies. The purposes of this brief review are to (a) examine factors that influence vertical jump performance among baseball players, (b) examine research on pitching multidirectional GRFs, and (c) examine literature concerning jump performances to baseball pitching performance. Collectively, this review can assist coaches and practitioners in lower-body power testing and training for baseball pitchers.

Colorado Springs, CO – MAJ Donald Bigham and Mark Stephenson named the 2017 TSAC-Facilitator and TSAC-Practitioners of the Year at NSCA’s TSAC Annual Training April 3-6, 2017 in Orlando, FL.

The TSAC Report is the NSCA’s quarterly, online-only publication designed for the training of tactical professionals, operators, and facilitators. You must be a member of the NSCA to access the TSAC Report.

Stay at the Renaissance Orlando at SeaWorld under our 2026 NSCA Tactical Annual Training group rate. Enjoy on-site amenities, special offers, + shuttle service.

Learn about the education and experience requirements for the Certified Performance and Sport Scientist certification. The NSCA's CPSS requirements allow for three different eligibility routes based on your level of post-secondary education.

The National Strength and Conditioning Association (NSCA) is proud to announce the recipients of the organization’s 2025 Coach of the Year Awards