Table 1.

Mean, standard deviation (SD) and prediction interval (PI) for phase shifts and gain at rest and paced breathing at 6 bpm

	Mean (SD)
Phase Rest	Left day1	Right day1	Left day2	Right day2	PI
OxyHb	13 (25)	15 (30)	11 (32)	17 (27)	–45; 75
Vmca	–58 (26)	–53 (45)	–64 (22)	–63 (27)	–137; 24
Gain Rest	Mean (SD %)
OxyHb	0·280 (190)	0·296 (160)	0·231 (197)	0·246 (165)	0·027; 2·146
Vmca	1·492 (53)	1·369 (133)	1·431 (81)	1·465 (73)	0·309; 5·859
Phase 6 bpm	Mean (SD)
OxyHb	9 (29)	2 (40)	9 (35)	10 (26)	–60; 74
Vmca	–58 (35)	–56 (51)	–54 (31)	–53 (29)	–147; 38
Gain 6 bpm	Mean (SD %)
OxyHb	0·308(217)	0·337 (183)	0·291 (155)	0·300 (143)	0·039; 2·208
Vmca	0·919 (90)	0·933 (123)	1·211 (96)	1·149 (81)	0·207; 4·278