Changes in facial muscle and skin temperature by smile as a simulated laugh using pen holding method

Changes in facial muscle and skin temperature by smile as a simulated laugh using pen holding method - Changes in facial muscle and skin temperature by smile as a simulated laugh using pen holding method

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000029626

Enrollment

Registered

2017-10-19

Start date

2017-10-19

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

none

Interventions

In the pen holding method, it repeats four times to hold disposable chopsticks for 15 seconds. I will take a 30-second break between each implementation.

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: A healthy adult

Exclusion criteria

Exclusion criteria: none

Design outcomes

Primary

Measure	Time frame
Repetition of the pen holding method increases the contraction of the orbicularis muscle and the large zygomatic muscle, contracting the eye ring muscles and decreasing the skin temperature of the superior orbital artery.	—

Secondary

Measure	Time frame
Repetition of the pen holding method increases pleasant feelings.	—

Countries

Japan

Contacts

Public Contactimai yuji

Niigata University Graduate School of Health Sciences School of Health Sciences

b15n003c@mail.cc.niigata-u.ac.jp025-227-0967

Outcome results

None listed

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