Diurnal differences in urine flow in healthy young men in a light-controlled environment: a randomized crossover design.

ABSTRACT:

Background

Older men often experience nocturnal urination difficulties, reflected by diurnal differences in maximum urine flow (Qmax). Since lower urinary tract symptoms and pathological comorbidities are frequent in older men, it remains unclear whether this diurnal variation is a physiological or pathological phenomenon. Our aim was to quantify the diurnal variability of Qmax in healthy young participants under varying daylight conditions in a stable environment to discern potential underlying causes of nocturnal urination difficulties.

Methods

Twenty-one healthy young men were recruited in a 4-day study utilizing daytime (08:00-18:00) exposure with two light conditions in randomized order: dim (< 50 lx) or bright (~2500 lx). Day 1 was for acclimation, and urine flow was a

SUBMITTER: Negoro H 

PROVIDER: S-EPMC10655426 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature