Accentuated eccentric loading in lower-body resistance training: a systematic review of acute and chronic adaptations on strength, power, and speed outcomes

AEL is an effective method to enhance lower body maximal strength and explosive performance, particularly when applying 110%-120% 1RM in multi-joint lifts or adding 10%-30% body mass in jump drills. However, the transfer of these adaptations to sprint and change-of-direction speed remains uncertain. Due to the high heterogeneity of study protocols and small sample sizes, these findings should be interpreted with caution. Future research requires standardized reporting and larger randomized trials to optimize programming.