Table 5.

Distribution of tidal breathing parameters in the repeatability cohorta

Tidal breathing parameters	REST1	REST2	POST‐CST
	Median [min, max]	Median [min, max]	Median [min, max]
RR (brpm)	14.13 [10.02, 20.27]	14.56 [10.50, 19.90]	46.93 [26.90, 69.37]
tI (sec)	1.70 [1.22, 2.61]	1.76 [1.18, 2.54]	0.66 [0.45, 1.11]
tE (sec)	2.49 [1.63, 3.47]	2.27 [1.62, 3.60]	0.73 [0.42, 1.21]
tTot (sec)	4.27 [2.97, 6.01]	4.15 [3.05, 5.90]	1.35 [0.87, 2.24]
tI/tE	0.75 [0.52, 1.18]	0.82 [0.62, 1.04]	0.97 [0.76, 1.16]
tI/tTot	0.43 [0.34, 0.54]	0.45 [0.38, 0.51]	0.49 [0.43, 0.54]
IE50	1.20 [0.89, 2.07]	1.18 [0.86, 1.78]	0.99 [0.72, 1.39]

brpm, breaths per minute; IE50, inspiratory to expiratory flow ratio at 50% tidal volume; PNT, pneumotachography; POST‐CST, post exercise measurement session; REST1, resting breathing measurement session 1; REST2, resting breathing measurement session 2; RR, respiratory rate; tE, expiratory time; tI, inspiratory time; tI/tE, inspiratory/expiratory time ratio; tI/tTot, duty cycle; tTot, total breath time.

^aNote that the entries are calculated using the averaged parameters for each subject measured with PNT.