Table 5.: Correlation Between Emphysema Score and Measurement in CPET

Emphysema Score Correlated to NO. R P Value
FVC, L (pre-exercise) 17 -0.491 0.0455
FVC, % predicted (pre-exercise) 17 -0.402 0.1096
FVC, L (post-exercise) 17 -0.553 0.0213
FVC, % predicted (post-exercise) 17 -0.463 0.0616
FEV1, L (pre-exercise) 17 -0.573 0.0162
FVC, % predicted (pre-exercise) 17 -0.484 0.0492
FEV1, L (post-exercise) 17 -0.627 0.0070
FVC, % predicted (pre-exercise) 17 -0.516 0.0340
Inspiratory capacity, L (pre-exercise) 17 -0.538 0.026
Inspiratory capacity, L (post-exercise) 17 -0.368 0.1612
AT, ml/kg/min 17 -0.595 0.0118
AT-VO2, ml/min 17 -0.566 0.0179
AT-VCO2, ml/min 17 -0.555 0.0207
VO2 max, ml/min 17 -0.514 0.0350
O2 saturation, % (post-exercise) 17 -0.584 0.0138
HR, bpm, (pre-exercise) 17 0.550 0.0223
Borg scale, (pre-exercise) 17 0.541 0.025
Borg scale, (post-exercise) 17 0.2051 0.4296

Abbreviations: FVC: Forced vital capacity; FEV1: Forced expiratory volume second 1; ERV: Expiratory reserve volume; IC: Inspiratory capacity; HR: Heart rate; AT: Anaerobic threshold; VO2 max: maximal oxygen consumption; min: minute.