Table 4

Correlations between time constants of onset and offset

	O₂onset	CO₂onset	Veonset	O₂offset	CO₂offset
O₂onset
CO₂onset	0.84
V˙eonset	0.61	0.91
O₂offset	0.43	0.59	0.72
CO₂offset	0.52	0.66	0.76	0.93
V˙eoffset	0.39	0.48	0.56	0.82	0.93

The direct correlations between onset and offset for each variable are highlighted in bold.
V˙e, expiratory minute volume.