Figure 1. Study design. The number of players who completed the study from Team A and Team B is presented here. CMJ: countermovement jump test; Yo-yo IR1: Yo-yo intermittent recovery 1 test 10s/10s training: 2 sets x 6 min of linear running for 10 seconds with 10 seconds passive recovery totaling 18 repetitions per set; 15s/15s training: 2 sets x 6 min of shuttle-running (back and forth) for 15 seconds, with 15 seconds passive recovery totaling 12 repetitions per set.