Fig. 3

The effect of body position on the intra-breath oscillometry values. The effects of the body position on different oscillometry variables are depicted as (a) box-plot diagrams (ReE, ReI, ΔR, XeE, XeI, ΔX), and (b) individual changes and box-plot diagrams (AXV, AXV’). The supine position has a significant effect on Xrs during expiration indicating EFL during tidal breathing (tEFL). P values are established by the Wilcoxon signed rank test. (n = 35)

ReE = end expiratory resistance; ReI = end inspiratory resistance; ΔR = difference between ReE and ReI; XeE = end expiratory reactance; XeI = end inspiratory reactance; ΔX = difference between XeE and XeI; AXV = area of Xrs vs V diagram; AXV’ = area of Xrs vs. V’ diagram;