Figure 6. Absolute changes in ventilatory efficiency among coronary artery disease patients after aerobic exercise training program. Group 1 (n=34, peak VO2 <17.5 mL·kg-1·min-1; lowest VE/VCO2 ratio 33.5); group 2 (n=67, peak VO2 >17.5 and <24.5 mL·kg-1·min-1; lowest VE/VCO2 ratio 29.7) and group 3 (n=22, peak VO2 >24.5 mL·kg-1·min-1; lowest VE/VCO2 ratio 29.0). Note that group 1 showed a greater decrease in the lowest VE/VCO2 ratio compared to the other two groups. VE/VCO2: ventilation to carbon dioxide production relationship; VO2: oxygen consumption. *P<0.05 vs group 1 (one-way ANOVA). Adapted from reference (7).
