Table 1.

Mean arterial blood pressure (MAP) and heart rate (HR) in wild-type and Cry1^−/–Cry2^−/– mice at rest

	Wild-type (n = 6)		Cry1−/–Cry2−/– (n = 5)
	Day	Night	Day	Night
MAP
Mean (mmHg)	79.6 ± 3.6	85.5 ± 3.6**	91.8 ± 4.0*	89.9 ± 3.8*
aVariance (mmHg2)	2.0 ± 0.4	1.7 ± 0.3	1.2 ± 0.2	1.2 ± 0.2
HR
Mean (beats min−1)	435 ± 35	481 ± 27**	529 ± 17*	515 ± 23*
aVariance (beats2 min−2)	167 ± 16	299 ± 30***	794 ± 225**	614 ± 155*
Number of data (×104)	18.8 ± 0.8	8.5 ± 1.0***	13.0 ± 1.7**	13.1 ± 1.3**

Values are means ± s.e.m.

^aVariance was calculated from the change in MAP (ΔMAP) or HR (ΔHR) from mean values every 4 s. Number of data, the number meeting the criterion for resting. Total number of data during the day or night was 43.2 × 10⁴. Significant differences from wild-type mice during the day:

^*P < 0.05

^**P < 0.01

^***P < 0.001.