Figure 2.

Age-adjusted relative risks of all-cause and cardiovascular disease (CVD) mortality by change in cardiorespiratory fitness for 9777 (223 all-cause and 87 CVD deaths) men aged 20–82 in the Aerobics Center Longitudinal Study. Cardiorespiratory fitness is measured by total duration during a maximal treadmill exercise test. Unfit is defined as quintile 1 (20%) and fit is defined as quintiles 2–5 (80%) of age-specific maximal exercise duration. Relative risks (95% confidence intervals) are shown inside the bars. (Adapted from Blair et al. (1995)).