Figure 2
Cardiac output (CO, L/min), stroke volume (SV, mL), and heart rate (HR, beats per minute, bpm), across the adult lifespan for 101 to 277 human samples classified either as control (healthy persons who do not regularly practice sports, red dots), or physically active (either professional athletes or subjects who regularly practice sports, blue dots), obtained from a literature search (Supplementary Material 6). Values for the three variables are shown in (A–C), while values scaled to height (cardiac output, stroke volume), or weight (heart rate), raised to their correspondent exponents (see Supplementary Material 6), are shown in (D, E). Lines and shaded regions indicate simple linear regression analysis (ordinary least square, OLS), and 95% confidence intervals, with age as a predictor, and R2 and p values for each regression are shown (see Supplementary Material 6).
