Study of the effect of face mask on conversation

Study of the effect of face mask on conversation - Study of the effect of face mask on conversation

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000043842

Enrollment

Registered

2021-05-01

Start date

2021-05-01

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

Project the voice via no mask &gt

Project the voice via mask 1 &gt

Project the voice via mask 2 &gt

Project the voice via mask 3 &gt

Project the voice via mask 4. On another day, listen to the voice via no or 4 masks. Project the voice via no mask &gt

Project the voice via mask 4 &gt

Project the voice via mask 3. On another day, listen to the voice via no or 4 masks. Project the voice via no mask &gt

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: Healthy adults

Exclusion criteria

Exclusion criteria: -Subjects with unstable voice due to the effects of pollen allergy -Those who have difficulty hearing or speaking in daily life -Subjects deemed inappropriate to participate in this study by the principle investigator

Design outcomes

Primary

Measure	Time frame
Sensory evaluation of conversation after a single use of each face mask.	—

Secondary

Measure	Time frame
Measurement data of phonetics and mouth movement of the voice while using each face mask.	—

Countries

Japan

Contacts

Public ContactHiroaki Miyoshi

Kao Corporation Personal health care Lablatory

miyoshi.hiroaki@kao.com+81-3-5630-9416

Outcome results

None listed

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