Table 2.
Mean and peak values for P, La, HR, and VO2 during CE, short HIIE (20 s), and long HIIE (4x4 min) compared to the according values at Pmax or LTP2 and VT2 from IET. Values are means (±SD).
| Peak values | CE | HIIE 20s | HIIE 4x4min | at Pmax (IET) | |
|---|---|---|---|---|---|
| P (W) | 80.9 (24.0) | 142.4 (44.9)* | 105.3 (51.8)*‡ | 142.4 (44.9) | |
| La (mmol·l-1) | 3.63 (1.73) | 3.90 (1.98) | 5.54 (2.93)*‡ | 5.90 (2.82) | |
| HR (b·/min-1) | 111.3 (18.0) | 116.3 (22.8) | 124.0 (24.9)* | 135.8 (27.1) | |
| VO2 (l·min-1) | 1.53 (.25) | 1.63 (.36) | 1.87 (.61)*‡ | 1.78 (.60) | |
| Mean values | CE | HIIE 20s | HIIE 4x4min | at LTP2 (IET) | at VT2 (IET) |
| P (W) | 80.9 (24.0) | 80.9 (24.0) | 80.9 (24.0) | 101.1 (30.1) | 99.8 (31.2) |
| La (mmol·l-1) | 3.20 (1.58) | 3.35 (1.74) | 4.80 (2.55)*‡ | 2.39 (.98) | 2.34 (1.03) |
| HR (b·min-1) | 103.6 (17.2) | 106.2 (20.8) | 109.1 (20.5) | 111.7 (17.8) | 110.7 (18.5) |
| VO2 (l·min-1) | 1.40 (.24) | 1.46 (.34) | 1.48 (.34) | 1.36 (.28) | 1.36 (.29) |
P power output; La, blood lactate concentration; HR, heart rate; VO2, oxygen uptake; CE, continuous exercise; HIIE, high-intensity interval exercise; LTP2, second lactate turn point; VT2, second ventilatory threshold; Pmax, maximum power output; IET, incremental exercise test.
*, significant difference to CE.
‡, significant difference to short HIIE.