Figure 1. The timeline of Pre-P1, Post-P1, and Pre-P2 measurements in the six experimental trials. Pre-P1, Pre-phase one; Post-P1, Post-phase one; Pre-P2, Pre-phase two; PImax, maximum inspiratory pressure; SEPT, sport-specific endurance plank test; T_skin, whole-body mean skin temperature; tHb, blood volume index; HR, heart rate; [La], blood lactate; RPB, rating of perceived breathlessness; RPE, rating of perceived exertion.