Effects of conditioning activity mode, rest interval and effort to pause ratio on post-activation performance enhancement in taekwondo: a randomized study - Ouergui, Ibrahim; Delleli, Slaheddine; Messaoudi, Hamdi; Bridge, Craig Alan; Chtourou, Hamdi; Franchini, Emerson; Ardigò, Luca Paolo (Frontiers in physiology, 2023)