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. 2017 Aug 2;12(8):e0182417. doi: 10.1371/journal.pone.0182417

Table 2. Ventilatory variables of healthy, ILD, and COPD groups at rest, L50, and L75 during OEP and RIP monitoring.

RR (per minute) VT (L) VE (L/min)
Groups OEP RIP OEP RIP OEP RIP

Healthy (n = 9)
Rest 17.6 ± 5.2 18.8 ± 3.5 0.6 ± 0.4 0.6 ± 0.3 9.8 ± 4.3 10.8 ± 4.6
L50 21.3 ± 5.4 21.1 ± 4.3 1.2 ± 0.6 1 ± 0.4 23.6 ± 12.2 18.7 ± 11.2
L75 24.5 ± 5.8 24.2 ± 5.1 1.5 ± 0.8 1.2 ± 0.6 36.7 ± 20.5 29 ± 19.2

ILD
(n = 9)
Rest 22.7 ± 5.2 23.5 ± 6.5 0.5 ± 0.1 0.5 ± 0.2 11.7 ± 2,7 11.4 ± 2.4
L50 29 ± 6.4 27.1 ± 7.4 0.8 ± 0.2 0.7 ± 0.2 22.7 ± 3.1* 18.4 ± 4
L75 33.3 ± 7.3 31.2 ± 8.5 1 ± 0.3 0.9 ± 0.3 30.5 ± 6* 25.8 ± 6.2

COPD (n = 9)
Rest 20.7 ± 3.3 19 ± 3.3 0.7 ± 0.2 0.7 ± 0.2 13 ± 2,7 12.8 ± 3
L50 21.7 ± 3.4 20.3 ± 3 0.9 ± 0.2 0.8 ± 0.2 18.7 ± 4,8* 16.7 ± 3.4
L75 23.4 ± 4 21.7 ± 3.3 1 ± 0.2 1 ± 0.2 23.6 ± 6* 20.8 ± 5.2

ILD: interstitial lung disease, COPD: chronic obstructive pulmonary disease, OEP: optoelectronic plethysmography, RIP: respiratory inductive plethysmography, RR: respiratory rate, VT: tidal volume, VE: ventilation. Data presented as mean ± SD.

*p<0.05 OEP vs RIP.