Heart rate & cardiovascular drift
The target intensity was 60% HRR, however the observed intensity ranged from 55-78% HRR (64.09 ± 7.08% HRR) due to increases or decreases in heart rate in the first few minutes after achieving the target HR. After reaching the target intensity, HR continued to increase throughout the 2-hr period of steady state exercise (Table 2); the magnitude of increase was statistically significant in both trials (SS, p = 0.004; PL, p = 0.003). The magnitude of cardiovascular drift during the 2-hr bout of steady-state exercise was not different between trials (p = 0.886). Furthermore, over the course of the 2 hours, heart rate did not differ significantly between SS and PL trials at any time point (Figure 3).