Table 2.
Mean rating of perceived exertion and affect during the 60/60 s and the 30/30 s LV-HIIT protocols.
| 60/60 s | 30/30 s | p | ES | ||
|---|---|---|---|---|---|
| RPE (6 to 20) | Interval | 15.9 ± 1.5 | 13.9 ± 1.5 | 0.003 | 1.33 |
| Recovery | 13.2 ± 1.8 | 12.3 ± 1.4 | 0.054 | 0.68 | |
| Protocol | 14.5 ± 1.4 | 13.1 ± 1.4 | 0.002 | 1.28 | |
| Affect (-5 to +5) | Interval | -0.8 ± 1.4 | 1.1 ± 2.0 | 0.007 | 0.70 |
| Recovery | 0.6 ± 1.7 | 1.7 ± 1.8 | 0.029 | 0.82 | |
| Protocol | -0.1 ± 1.4 | 1.4 ± 1.9 | 0.008 | 1.08 | |
Values are presented as mean ± SD; LV-HIIT, low-volume high-intensity interval training; RPE, rating of perceived exertion; RER, respiratory exchange ratio; ES, effect size (Cohen’s dz); ES < 0.2 reflects a trivial effect, ≥ 0.2 and < 0.6 reflects a small effect, ≥ 0.6 and < 1.2 reflects a moderate effect, ≥ 1.2 and < 2.0 reflects a large effect, ≥ 2.0 and < 4.0 reflects a very large effect, and ≥ 4.0 reflects a nearly perfect effect.