Table 4.
Physiological responses to running at the velocity closest to 70 percent of maximal oxygen consumption, before (pre) and after (post) eight weeks of either continuous training (CT) or sprint interval training (SIT).
| CT | SIT | |||
|---|---|---|---|---|
| Pre | Post | Pre | Post | |
| Velocity (km·h−1) | 8.7 ± 0.4 | 9.7 ± 0.3 * | 8.8 ± 0.4 | 9.6 ± 0.3 * |
| % VO2max | 70.5 ± 0.9 | 71.4 ± 0.7 | 70.3 ± 0.7 | 70.2 ± 0.6 |
| % HRpeak | 84.3 ± 1.0 | 85.1 ± 0.9 | 81.9 ± 1.6 | 84.9 ± 1.4 * |
| O2 pulse (mL·beat−1) | 14.5 ± 0.9 | 15.1 ± 0.9 * | 15.7 ± 1.0 | 16.0 ± 0.9 |
| RER (VCO2·VO2−1) | 0.94 ± 0.01 | 0.91 ± 0.01 * | 0.93 ± 0.01 | 0.91 ± 0.01 |
| Lactate (mmol·l−1) | 2.62 ± 0.16 | 2.18 ± 0.19 *,# | 2.33 ± 0.12 | 2.03 ± 0.15 *,# |
Values are mean ± SEM. % VO2max, percent of maximal oxygen consumption; % HFpeak, percent of peak heart rate; O2 pulse, oxygen pulse; RER, respiratory exchange ratio. CT, n = 11. SIT, n = 13. Values for % HFpeak and O2 pulse represents only 12 subjects in SIT. * Statistically significant difference from pre (student’s t-test), p < 0.05. # Statistically significant difference from pre (verified by Wilcoxon signed rank test), p < 0.05. There were no statistically significant differences between groups.