Figure 2. Oxygen uptake and heart rate relative to maximum values in all out exercise (60 times for 8s interspersed by 12s of passive recovery) for total (Panels A and B), effort (Panels C and D) and pause values (Panels E and F) in men and women. Data are men ± standard deviation; for VO2pause, higher values in women compared to men (p < 0.05).