Table 3.

Percentages for the number of signs of lag time at both baseline and release periods in all subjects for repeat measurement 3 times, according to supine and 90° head-up tilt postures. Bold numbers stand for the highest value among three different situations for the lag time expression.

Posture	Sign of lag time	Ch.1 $\otimes$ Ch.2	Ch.1 $\otimes$ Ch.3	Ch.1 $\otimes$ Ch.4	Ch.2 $\otimes$ Ch.3	Ch.2 $\otimes$ Ch.4	Ch.3 $\otimes$ Ch.4
Supine	+	60	35	65	15	28.33	66.67
	0	23.33	26.67	18.33	26.67	50	20
	−	16.67	38.33	16.67	58.33	21.67	13.33
		100%	100%	100%	100%	100%	100%
Tilt	+	65	51.67	71.67	6	51.67	70
	0	23.33	31.67	18.33	35	35	23.33
	−	11.67	16.67	10	58.33	13.33	6
		100%	100%	100%	100%	100%	100%