The subjects of the GCT1 and GCT2 performed their normal soccer training along with the CTX program (1 session per week for the GTC1 and 2 sessions per week for the GCT2). The CONT group performed only regular soccer training. All groups performed similar soccer training. The CTX was performed at the beginning of a soccer training session after a warm-up. Each training session was organized in 2 stations. The exercises in each station included: first station, 3 sets, with 6 squat repetitions at 85% of 1-RM, 15 m plus top speed and cross, separated by 3 min of rest; second station, 3 sets, 6 repetitions of the squat at 85% of 1-RM, plus agility with the ball and shot at the goal, separated by 3 min of rest. The load in the squat exercise was increased by 5% from initial 1RM each 2 weeks. After finishing the CTX program, all subjects were revaluated.