Sympathetic activity as the cause of the morning increase in cardiac events. A likely culprit, but the evidence remains circumstantial.
Muller
J E
JE
Tofler
G H
GH
Verrier
R L
RL
D002318:Cardiovascular Diseases / Q000503:physiopathology*; D002940:Circadian Rhythm; D006801:Humans; D011187:Posture / Q000502:physiology; D012890:Sleep / Q000502:physiology; D013564:Sympathetic Nervous System / Q000503:physiopathology*; D014851:Wakefulness / Q000502:physiology