A cross-over study about the influence which warmed humidification has on nasal cavity in healthy adult

A cross-over study about the influence which warmed humidification has on nasal cavity in healthy adult - Study about the influence which heated humidification has on nasal cavity

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000036515

Enrollment

Registered

2019-05-01

Start date

2019-03-25

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

Treatment A (Wash out period) Treatment B (Wash out period) Treatment C Treatment B (Wash out period) Treatment C (Wash out period) Treatment A Treatment C (Wash out period) Treatment A (Wash out p

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: The healthy man who do not show allergy-like reaction in a saccharin test (screening stage)

Exclusion criteria

Exclusion criteria: 1)Subjects who have a skin disorder to the test product wearing part 2)Subjects who have the skin allergy condition over drugs, cosmetics, a commercial mask, and warm temperature 3)Subjects who have merged diabetes mellitus

Design outcomes

Primary

Measure	Time frame
Evaluation of ciliary activity by saccharin test	—

Secondary

Measure	Time frame
Amount analysis of viable bacteria at epipharynx mucus	—

Countries

Japan

Contacts

Public ContactShigemi Tsuchiya

Kao corporation Personal Health Care Products Research

tsuchiya.shigemi@kao.com03-5630-7272

Outcome results

None listed

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