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Effect of caffeine on neuropsychological performance and driving ability in healthy volunteers: a double-blind placebo-controlled study.

Effect of caffeine on neuropsychological performance and driving ability in healthy volunteers: a double-blind placebo-controlled study. - Effect of caffeine on neuropsychological performance and driving ability in healthy volunteers: a double-blind placebo-controlled study.

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000023576
Enrollment
100
Registered
2016-08-10
Start date
2016-08-10
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 volunteer

Interventions

Effects of caffeine intake on cognitive functions in healthy volunterrs. Effects of caffeine intake on driving performance in healthy volunterrs.

Sponsors

University of Occupational and Environmental Health
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: A)The subjects defined mentally healthy ones using the SCID-I-RV/NP B)Inclusion criteria were having a valid driving license. C)The patients who can be signed informed consent were enrolled in the present study.

Exclusion criteria

Exclusion criteria: The subjects met any mental disorders criteria using the Structured Clinical interview for the Diagnostic and Statistical Manual of Mental Disorders, fifth edition (DSM-5), and had taken caffeine 3 days within the experiments. The subjects who have any history of psychiatric diseases. The subjects who had histories of gastric ulcer. The subjects who had histories of cardiovascular disorders. The subjects who have histories of glaucoma. Women in pregnant or willing to pregnant. Women under breast-feeding. The subjects who physicians consider not to be suited.

Design outcomes

Primary

MeasureTime frame
Driving performance using driving simulator

Secondary

MeasureTime frame
Cognitive function test Circadian rhythm,Sleep efficiency,amount of activity Quantitative EEG Udvalg for Kliniske Undersogelser

Countries

Japan

Contacts

Public ContactYUKI KONISHI

University of Occupational and Environmental Health depertment of psychiatry

konikoni0125@hotmail.co.jp0936917523

Outcome results

None listed

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