Figure 1.

Submaximal Exercise Cardiac Output Reserve With Increasing Exercise Intensity in Preterm Versus Term-Born Young Adults

Submaximal cardiac output reserve values at 40%, 60%, and 80% exercise intensity were calculated by subtracting resting cardiac index from the cardiac index at each exercise intensity level. Submaximal exercise cardiac output reserve at 40% of peak exercise intensity was 56% lower in the preterm-born group versus term-born control subjects (p = 0.021). Error bars represent SEM. Bold p values are statistically significant (p < 0.05).