The effects of interset rest on adaptation to 7 weeks of explosive training in young soccer players

The aim of the study was to compare the effects of plyometric training using 30,60,or 120 s of rest between sets on explosive adaptations in young soccer players. four groups of athletes (age 10.4 ± 2.3 y; soccer experience 3.3 ± 1.5 y) were randomly formed: control (cg; n = 15),plyometric training with 30 s (g30; n = 13),60 s (g60; n = 14),and 120 s (g120; n = 12) of rest between training sets. before and after intervention players were measured in jump ability,20-m sprint time,change of direction speed (cods),and kicking performance. the training program was applied during 7 weeks,2 sessions per week,for a total of 840 jumps. after intervention the g30,g60 and g120 groups showed a significant (p = 0.0001 - 0.04) and small to moderate effect size (es) improvement in the countermovement jump (es = 0.49; 0.58; 0.55),20 cm drop jump reactive strength index (es = 0.81; 0.89; 0.86),cods (es = -1.03; -0.87; -1.04),and kicking performance (es = 0.39; 0.49; 0.43),with no differences between treatments. the study shows that 30,60,and 120 s of rest between sets ensure similar significant and small to moderate es improvement in jump,cods,and kicking performance during high-intensity short-term explosive training in young male soccer players. © journal of sports science and medicine.