The impact of movement, physical activity and position on urine production: A pilot study

Background Many different internal factors have been proven to influence urine production such as age, weight, and quality of sleep. External factors such as consumption of caffeine and fluid consumption have been shown to have an impact on urine production. Aim To investigate the impact of movement, physical activity and position on urine production. Methods This prospective observational study was executed at Ghent University Hospital, Belgium. Study participation was open for anyone visiting the hospital. Participants collected one basic and two extended 24‐hour urine collections and filled in questionnaires concerning their general health and physical activity. Urinary levels of osmolality, sodium and creatinine were determined. Data on movement, physical activity and position was described. Results An increase in body movement leads to a significant increase in diuresis during daytime, night‐time, and 24 hours (P = .002, P