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Table 6 Statistically significant relationships between the MRC chronic dyspnea score and the parameters of the cardiopulmonary exercise testing (CPET) in the study population quantified using Spearman's rank correlation coefficient

From: MRC chronic Dyspnea Scale: Relationships with cardiopulmonary exercise testing and 6-minute walk test in idiopathic pulmonary fibrosis patients: a prospective study

CPET parameter

 

MRC score

VO2 peak

r

-.496

 

p

.012

VO2 peak %

r

-.481

 

p

.017

VO2 peak/kg

r

-.731

 

p

<.001

SPO2 peak

r

-.682

 

p

<.001

BR peak %

r

-.437

 

p

.029

VE/VCO2 slope

r

.731

 

p

<0.001

HR recovery

r

-.629

 

p

.001

VE/VCO2 at AT*

r

0.630

 

p

.002

Borg scale at peak exercise

r

0.5

 

p

.01

  1. VO2 peak: oxygen uptake at peak exercise, AT anaerobic threshold, SPO2 oxygen saturation, VE peak: minute ventilation at peak exercise, VE/VCO2 slope: slope of relationship between VE and VCO2, HR Heart rate, *VE/VCO2 at AT refers to 21 patients who reached AT
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BMC Pulmonary Medicine

ISSN: 1471-2466

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