Table 3.
Mean (M) and standard deviation (SD) for participants' physiological responses to baseline (cycling at 10% VO2peak power output), moderate (cycling at 50% VO2peak power output), and high intensity (cycling at 90% VO2peak power output) exercise.
| Moderate intensity group (n = 16) M (SD) | High intensity group (n = 16) M (SD) | Test statistic | |
|---|---|---|---|
| Baseline HR (bpm) | 92.6 (11.3) | 95.9 (11.7) | t(30) = 0.80, p = 0.430 |
| Baseline %HR (% of HRpeak) | 50.3 (6.0) | 52.1 (5.1) | t(30) = 0.93, p = 0.361 |
| Baseline salivary cortisol (nmol·L−1) | 9.5 (3.7) | 9.1 (4.1) | t(30) = 0.41, p = 0.686 |
| Intervention HR (bpm) | 130.8 (17.2) | 175.9 (11.9) | t(30) = 8.34, p < 0.001 |
| Intervention %HR (% of HRpeak) | 70.8 (6.9) | 95.8 (4.3) | t(30) = 11.89, p < 0.001 |
| Intervention salivary cortisol (nmol·L−1) | 7.0 (2.3) | 15.4 (8.8) | t(30) = 3.93, p < 0.001 |
| Intervention blood lactate concentration (mmol·L−1) | 2.4 (1.2) | 9.5 (3.0) | t(30) = 8.79, p < 0.001 |
HR, heart rate; %HR, percentage of individual peak HR.