Figure 1. Overview of the study design. CONTROL-PAPE: control condition including a standardized warm-up, sitting rest (SR) and then standardized maximal contraction named PAPE (post-activation performance enhancement). CONTROL-MI: control condition including standardized warm-up, SR followed by standardized motor imagery (MI). PAPE-MI: standardized warm-up followed by SR, PAPE and then MI. MI-PAPE: standardized warm-up followed by SR, MI and then PAPE. DBTA; digital boxing trainer assistant. NASA-TLX (NASA-task load index): subjective fatigue questionnaire.