Effects of Percutaneous Electrical Nerve Stimulation on Countermovement Jump and Squat Performance Speed in Male Soccer Players: A Pilot Randomized Clinical Trial - Gallego-Sendarrubias, Gracia Maria; Arias-Buria, Jose Luis; Ubeda-D'Ocasar, Edurne; Hervas-Perez, Juan Pablo; Rubio-Palomino, Manuel Antonio; Fernandez-de-las-Penas, Cesar; Valera-Calero, Juan Antonio; (Journal Of Clinical Medicine, 2021)