Skip to main content

Table 2 Exercise capacity and cardiopulmonary parameters

From: Exercise cardiovascular magnetic resonance reveals reduced cardiac reserve in pediatric cancer survivors with impaired cardiopulmonary fitness

  Normal Fitness Impaired Fitness P
Cardiopulmonary Exercise Testing
% Predicted HRmax (%) 99 ± 7 98 ± 5 0.65
Respiratory exchange ratio 1.20 ± 0.07 1.33 ± 0.20 0.086
Peak Workload (watts) 234 ± 89 156 ± 85 0.089
Exercise Time (mins) 9.0 (6.0, 12.0) 8.5 (5.3–11.8) 0.22
Peak VO2 (L/min) 2.5 ± 1.1 1.5 ± 0.7 0.018
Peak VO2 (mL/kg/min) 40.8 ± 10.0 27.3 ± 7.4 0.003
% Predicted Peak VO2 (%) 97 ± 14 70 ± 16 0.001
VO2 at AT (L/min) 1.7 ± 0.7 1.1 ± 0.4 0.025
% Predicted Peak VO2 at AT (%) 66 ± 12 50 ± 14 0.02
  1. Values are mean ± SD or median (interquartile range). Abbreviations: AT Anaerobic threshold, HR Heart rate, RER Respiratory exchange ratio