Determination of respiratory point compensation in healthy adults: Can non-invasive near-infrared spectroscopy help?

During incremental cycling exercise, the V˙O2 associated with the onset of a plateau in near-infrared spectroscopy-derived deoxyHb occurs in coincidence with the V˙O2 at respiratory compensation point suggesting that respiratory compensation point can be accurately estimated, non-invasively, using near-infrared spectroscopy-derived deoxyHb in alternative to the use of ventilatory-based techniques.