Jul 15, 2019 Plyometric exercises for power output and explosivenes View this post on Instagram Plyometric exercises such as static box jumps are useful for the development of power output and explosiveness for youth athletes, and all athletes in general. Here is 14 y/o AAA Team Illinois hockey player, Frankie Muscarello, performing 40inch box jumps at the beginning of his workout. #plyometrics #power #explosive #tripleextension #boxjumps #AAAhockey #youthtraining #strength #resultsdriven #performancetrainingsystems A post shared by Performance Training Systems (@ptschicago) on Jul 12, 2019 at 9:05am PDT