title: Circadian rhythm of rectal reactivity in individuals with regular and irregular bowel evacuation function.
abstract: Circadian dynamics of rectal reactivity was studied in humans with regular and irregular rhythms of bowel evacuation function by chronoenterography. In individuals with regular rhythm of this function (stool 7 days per week) the acrophase of circadian rhythm of rectal reactivity was observed in morning hours, while in the daytime and evening and this parameter decreased almost 7-fold. In subjects with bowel arrhythmia (3-6 days with stool per week) rectal reactivity was inversed: 2-fold decreased in the morning and 3-fold increased in the evening.
authors.affiliation: Department of Visceral Systems Physiology, Institute of Experimental Medicine, Russian Academy of Medical Sciences, St. Petersburg, Russia. iem@iem.spb.ru
authors.forename: K A
authors.initials: KA
authors.lastname: Shemerovskii
mesh_terms: D000328:Adult; D001145:Arrhythmias, Cardiac; D002940:Circadian Rhythm / Q000502:physiology*; D003248:Constipation; D003672:Defecation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012007:Rectum / Q000502:physiology*; D013997:Time Factors