Fig. 2

The relationship between PFT, CT, CPET parameters and delayed HRR. Adjusted OR (with upper and lower 95% CIs) for likelihood of having lung function, imaging and/or cardiopulmonary exercise response impairment in participants with delayed HRR compared with those with normal HRR. Abbreviations PFT = pulmonary function test; CT = computed tomography; CPET = cardiopulmonary exercise test; HRR = heart rate recovery; OR = odds ratio; CI = confidence interval; VV = vascular volume; VE/VCO₂ = ventilatory equivalent for carbon dioxide;