Table 2 Identification of abnormal reaction pattern(s)

Reduced peak \({\dot{\text{V}}\text{O}}_{2}\)

X

X

X

X

Low \({\dot{\text{V}}\text{O}}_{2}\) at AT

X

X

X

(X)

Steep HR increase relative to \({\dot{\text{V}}\text{O}}_{2}\) and shallow rise in O₂ pulse, respectively

X

X

X

Low \({\dot{\text{V}}\text{O}}_{2}\)/WR slope during incremental exercise

X

X

Elevated \({\dot{\text{V}}\text{E}}/{\dot{\text{V}}\text{CO}}_{2}\) slope or elevated EqCO₂ at AT

*

X

X

Normal breathing reserve

X

X

X

ECG changes, inadequate BP behaviour

X

Low peak HR

X

X

Low PETCO₂ or PaCO₂ at rest and/or decrease during exercise

*

X

SpO₂ or PaO₂ decrease during exercise

X

(X)

Low breathing reserve

X

Abnormal breathing pattern**

X