Figure 4. Mean normalized plantar flexors torque (Fatigue index, FI) changes in the non-dominant leg during two conditions [(Control-MVIC, 260-s rest in the dominant leg and, 12 repetitions of fatiguing test in the non-dominant leg) and (Fatigue-MVIC, 2 × 100-s fatigue intervention and, 12 repetitions of fatiguing test in the non-dominant leg)] at pre-intervention, post-intervention 15-s prior fatigue testing, repetitions one-twelve of the testing and 15-s post fatigue testing. **, difference between pre-intervention and post-fatigue test (p < 0.05), ‡, difference between repetition (REP)1 and REP3 (p = 0.006), † , difference between REP1 and REP6 (p = 0.041) and §, difference between REP1 vs. REP12 (p = 0.026). CON-MVIC: Control MVIC condition, Fat-MVIC: Fatigue MVIC condition.