The dependence of circadian defecation rhythm regularity on the position of the rhythm’s acrophase in the circadian cycle

Abstract

The dependence of the regularity of the circadian rhythm of the intestine on the position of the acrophase of this rhythm was investigated. 356 medical students were examined. Revealed the presence of regular (daily) defecation rhythm with a frequency of 7 times a week (Euenteria) and irregular rhythm with a frequency of 1-6 times per week (Bradientria). We have identified 4 variant acrophase (the date of implementation of the evacuation function of the intestine) for 4 periods of day: morning, afternoon, evening, night. Irregular bowel rhythm was detected in almost every second student (47% of respondents). The absence of morning (physiologically optimal) intestinal rhythm acrophase was revealed in the majority (189 out of 356) of medical students. In individuals with Euenturia high level of wellbeing, activity and mood found significantly (1.5, 1.4 and 1.24 times respectively) more likely than in persons with Bradientria. In individuals with Bradientria the higher risk of low level of wellbeing, activity and mood were found significantly (1.7, 1.7 and 1.25 times, respectively) more frequently than in individuals with Euenteria. It is shown that in individuals with Euenteria the morning acrophase of the defecation were found almost 2 times more likely than its absence. In individuals with Bradientria the lack of morning acrophase met almost 3 times more often than its presence. The regularity of the intestinal rhythm is associated with the presence of its morning acrophase, and the irregularity of this rhythm is due, on the contrary, to the lack of physiologically the morning intestinal rhythm acrophase