Epidemiological study to evaluate the effects of short-term exposure to ultrafine particle on olfactory and cognitive functions

Epidemiological study to evaluate the effects of short-term exposure to ultrafine particle on olfactory and cognitive functions - Short-term exposure to ultrafine particle and olfactory and cognitive functions

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000055708

Enrollment

Registered

2024-12-01

Start date

2024-12-01

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

Not specific

Interventions

Breathing air that measured UFP concentrations

Eligibility

Sex/Gender

Male

Inclusion criteria

Inclusion criteria: Never-smokers including heated and/or electric cigarettes. Men without history of cardiovascular, respiratory, olfactory, and cardiovascular disease

Exclusion criteria

Exclusion criteria: People who cannot participate in 4 inspections in different seasons during the year. People who cannot take a half day on weekdays

Design outcomes

Primary

Measure	Time frame
olfactory function, cognitive function, and cardiac physiological assessment	—

Countries

Japan

Contacts

Public ContactTakehiro Michikawa

Toho University Department of Environmental and Occupational Health, School of Medicine

takehiro.michikawa@med.toho-u.ac.jp+81-3-3762-4151

Outcome results

None listed

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