Effects of Time-of-Day Caffeine Intake on Micturition and Sleep in Healthy Adults

Effects of Time-of-Day Caffeine Intake on Micturition and Sleep in Healthy Adults - Effects of Time-of-Day Caffeine Intake on Micturition and Sleep in Healthy Adults

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000061336

Enrollment

Registered

2026-05-22

Start date

2026-05-22

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

healthy adults

Interventions

caffeine intake in the afternoon nighttime caffeine intake

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Ability to consume coffee, Experiencing caffeine-containing beverages after 8pm

Exclusion criteria

Exclusion criteria: Having an acute urinary tract infection Attending a urology clinic

Design outcomes

Primary

Measure	Time frame
Sleep status	—

Secondary

Measure	Time frame
urine volume, urinary frequency, daytime sleepiness	—

Countries

Japan

Contacts

Public ContactRika Imanishi

Niigata University of Health and Welfare Department of occupational therapy, Faculty of Rehabilitation

imanishi@nuhw.ac.jp025-257-4447

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026