Table 1.

Peak/trough phase locations and amplitudes of circadian rhythms. Data are presented as Mean±SE. Results were calculated from the cosinor fits (Figure 6) that were obtained from the cosinor analyses using the mixed model ANOVAs (Supplemental Table IV).

		Baseline	Tilt	P (circadian)
SBP (mmHg)	Peak phase	231.7°±11.8°	254.1°±9.6°	0.0079
	Trough phase	340.7°±15.2°	357.7°±9.4°
	Peak-to-trough amplitude	4.6±1.5	5.6±1.5
	Tilt effect	-2.6±0.6
DBP (mmHg)	Peak phase	233.3°±26.4°	275.5°±9.1°	0.012
	Trough phase	119.2°±27.4°	173.6°±10.6°
	Peak-to-trough amplitude	1.9 ±1.1	3.9 ±1.1
	Tilt effect	9.3 ±0.4
HR (bpm)	Peak phase	189.8°±24.4°	177.0°±10.9°	<0.0001
	Trough phase	318.1°±22.5°	55.0°±18.2°
	Peak-to-trough amplitude	5.9±2.2	8.9±2.2
	Tilt effect	25.9±0.9
SDNN (msec)	Peak phase	35.6°±8.9°	345.9°±19.0°	<0.0001
	Trough phase	265.0°±21.4°	228.4°±14.1°
	Peak-to-trough amplitude	25.3±4.8	15.2±5.0
	Tilt effect	-25.5 ±2.0
Epinephrine (pg/ml)	Peak phase	217.2°±25.5°	208.7°±11.7°	<0.0001
	Trough phase	328.7°±20.4°	329.3°±9.0°
	Peak-to-trough amplitude	10.6±5.5	28.6±5.4
	Tilt effect	25.0±2.2
Norepinephrine (pg/ml)	Peak phase	120.9°±28.9°	202.3°±13.4°	0.00023
	Trough phase	352.2°±36.9°	324.5°±15.3°
	Peak-to-trough amplitude	40.7±20.8	81.7±21.1
	Tilt effect	163.9±8.7
RMSSD (msec)	Peak phase	8.8°±25.3°	113.8°±26.6°	0.00048
	Trough phase	203.6°±29.7°	221.7°±21.1°
	Peak-to-trough amplitude	17.9 ±4.2	8.6±5.0
	Tilt effect	-41.5±2.0
pNN50 (%)	Peak phase	5.7°±69.1°	96.8°±48.5°	0.0026
	Trough phase	188.3°±21.7°	220°±43.7°
	Peak-to-trough amplitude	10.6 ±2.8	4.1±3.3
	Tilt effect	-31.9±1.4