Experimental Approach to the Problem
fatigue
The study was a 3-armed randomized controlled trial with 1 group performing “balance training” (BALANCE), a second group participating in “balance training under fatigue” after a high-intensity interval training [HIIT] session (group HIIT-BALANCE), and a third group completing “balance training before fatigue” (BALANCE-FATIGUE). The BALANCE group served as control group because this group followed a classical balance training regimen. The reason for including BALANCE-HIIT was that we wanted to include a group with an identical metabolic and cardiovascular training load as the HIIT-BALANCE group because the HIIT protocol may affect motor learning (Experimental approach to the problem.