Table 3

Effect of Mueller manoeuvres (−20 cm H₂O and −40 cm H₂O) on POBF relative to baseline measurements

Subject	Mueller manoeuvre −20 cm H₂O					Mueller manoeuvre −40 cm H₂O
	Inspiratory effort		Change in POBF relative to baseline			Inspiratory effort		Change in POBF relative to baseline
	Duration (seconds)	Mean P (cm H₂O)	M2A (% (SD))	M2B (% (SD))	p value	Duration (seconds)	Mean P (cm H₂O)	M4A (% (SD))	M4B (% (SD))	p value
Analyses include repeated ANOVA and Student-Newman Keuls post hoc tests for each subject separately, and for the group as a whole. Only significant p values are shown.
*Group mean (SEM).
†p⩽0.05 relative to baseline.
‡p⩽0.01 relative to baseline.
§p⩽0.05 relative to early Mueller manoeuvre.
1	28.4	−25.4	−14.7 (13.5)	−10.1 (7.7)		27.4	−45.8	7.8 (18.1)	19.7 (11.3)
2	14.6	−15.0	17.6 (10.4)†	13.0 (18.7)	0.045	29.8	−38.1	31.4 (6.2)‡	49.4 (7.5)‡§	<0.001
3	15.0	−15.8	12.0 (8.2)†	14.2 (13.0)†	0.008	22.9	−34.8	28.9 (8.4)‡	26.4 (7.6)‡	<0.001
4	15.8	−15.3	20.2 (10.2)‡	12.2 (10.9)†§	<0.001	31.0	−44.7	29.8 (5.1)‡	20.4 (8.2)‡§	<0.001
5	41.9	−21.6	7.4 (15.9)	32.8 (69.8)		21.4	−37.3	−15.5 (8.2)‡	−8.1 (8.5)§	<0.001
6	32.4	−20.5	−0.7 (6.1)	5.6 (11.3)		25.1	−41.7	−15.2 (6.4)‡	11.1 (9.9)§	<0.001
7	42.7	−22.6	45.2 (36.5)†	79.2 (42.5)†	0.014	44.0	−41.5	−6.7 (9.5)	17.6 (15.2)§	0.028
All	27.3	−19.5	12.4 (7.1)*	21.0 (10.8)*		27.4	−40.6	8.6 (8.1)*	19.5 (6.5)*†	0.039