Effectiveness of coffee on social communication: A randomized controlled trial.

Effectiveness of coffee on social communication: A randomized controlled trial. - Effectiveness of coffee on social communication: A randomized controlled trial.

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000031212

Enrollment

120

Registered

2018-02-09

Start date

2018-02-09

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 adult

Interventions

Consuming coffee Consuming water Not consuming anything

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: The inclusion criterion is daily consumption of coffee

Exclusion criteria

Exclusion criteria: none

Design outcomes

Primary

Measure	Time frame
Rapport	—

Secondary

Measure	Time frame
Motivation to enhance a relationship Affective state Synchrony	—

Countries

Japan

Contacts

Public ContactKen Fujiwara

Osaka University of Economics Faculty of Human Sciences

k.fujiwara1985@gmail.com06-6328-2431

Outcome results

None listed

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