Table 1. Mean absolute values of oxygen uptake, carbon dioxide output, ventilation, and respiratory exchange ratio during the 60/60 s and the 30/30 s LV-HIIT protocols.
|
60/60 s |
30/30 s |
p |
ES |
| VO2 (L/min) |
Interval |
3.25 ± 0.57 |
2.83 ± 0.50 |
< 0.001 |
3.08 |
| Recovery |
1.85 ± 0.27 |
2.38 ± 0.46 |
< 0.001 |
1.95 |
| Protocol |
2.55 ± 0.40 |
2.61 ± 0.47 |
0.239 |
0.44 |
| VCO2 (L/min) |
Interval |
3.15 ± 0.61 |
2.93 ± 0.58 |
0.011 |
1.09 |
| Recovery |
2.15 ± 0.35 |
2.44 ± 0.45 |
0.022 |
0.93 |
| Protocol |
2.65 ± 0.45 |
2.69 ± 0.51 |
0.624 |
0.18 |
| VE (L/min) |
Interval |
108.59 ± 27.39 |
94.28 ± 24.98 |
< 0.001 |
1.88 |
| Recovery |
74.78 ± 15.96 |
80.50 ± 18.07 |
0.100 |
0.62 |
| Protocol |
91.69 ± 21.16 |
87.39 ± 21.42 |
0.102 |
0.46 |
| RER (a.u.) |
Interval |
0.98 ± 0.05 |
1.03 ± 0.03 |
0.005 |
1.28 |
| Recovery |
1.20 ± 0.05 |
1.03 ± 0.05 |
< 0.001 |
2.49 |
| Protocol |
1.09 ± 0.05 |
1.03 ± 0.03 |
0.003 |
1.53 |
Values are presented as mean ± SD. LV-HIIT, low-volume high-intensity interval training; VO
2, oxygen uptake; VCO
2, carbon dioxide output; VE, ventilation; RER, respiratory exchange ratio; ES, effect size (Cohen’s d
z); 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.
