Table 2.
Acute cardiorespiratory responses to HIIT and MICT
| HIIT | MICT | p value | |
|---|---|---|---|
| Duration, minutes | 20.00 (.03) | 23.20 (2.56) | <.01 |
| Average HR, bpm | 146.26 ± 13.80 | 129.38 ± 19.13 | <.01 |
| Average HRR, %HRR | 69.21 (14.05) | 52.62 (16.36) | <.01 |
| Average VO2 | 20.96 ± 4.84 | 17.08 ± 3.17 | <.01 |
| Average VO2, % of VO2peak | 64.77 (11.27) | 51.54 (10.85) | <.01 |
| Average MET | 7.54 ± 2.00 | 6.21 ± 1.25 | <.01 |
| Energy expenditure, kcal | 128.08 ± 35.65 | 118.93 ± 29.58 | <.01 |
| Energy expenditure, kcal/min | 6.40 ± 1.78 | 5.09 ± 1.14 | <.01 |
Note: Data presented as mean ± SD or median (IQR). bpm = beats per minute; HIIT = high intensity interval training; HR = heart rate; HRR = heart rate reserve; IQR = interquartile range; kcal = kilocalorie; MET = metabolic equivalent of task; MICT = moderate intensity continuous training; VO2 = oxygen uptake; VO2peak = peak oxygen uptake capacity.