Figure 3. Acute response for La (A), HR (B), and VO₂ (C) to CE, short HIIE, and long HIIE. Values are means ± SD. The specific exercise modes were conducted from min 6 to min 34 after a standardized warm up phase. La, blood lactate; HR, heart rate; VO₂, oxygen uptake; HIIE, high-intensity interval exercise; CE, continuous exercise; LTP₂, second lactate turn point from the incremental exercise test.