Fig. 2: Load detection thresholds.
Individual (white circles) and group mean (black circles) data for single-point detection threshold (A) and the increase in peak inspiratory pressure at detection threshold (B). In (C), peak inspiratory pressure is expressed as a percentage of maximal inspiratory pressure (%Pimax). Group data are shown as means with 95% confidence intervals. Peak inspiratory pressure is negatively increasing and represents the change (Δ) relative to the previous unloaded breath. There were no significant differences in detection threshold, or peak inspiratory pressure and peak inspiratory pressure expressed as %Pimax at detection threshold, in the sham group (n = 10) or active group (n = 12) due to the training intervention (pre vs. post). Grey circles show participants who did not detect the loads, and therefore their threshold was taken from the largest load of 1.7 cmH2O/l/s (dashed horizontal lines in A) in either the incrementing or decrementing trial. A single-point detection threshold of 1.7 cmH2O/l/s indicates that a participant did not detect the largest load in the incrementing and decrementing trials.
