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influence of scent on the positive effects induced by physical contact

influence of scent on the positive effects induced by physical contact - influence of scent on the positive effects induced by physical contact

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
JPRN
Registry ID
JPRN-UMIN000058821
Enrollment
60
Registered
2025-08-18
Start date
2025-08-01
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

Test fragrance inhalation (rest 20 min) -&gt
test fragrance inhalation (physical contact 16 min) -&gt
odorless air inhalation (rest 20 min) -&gt
odorless air inhalation (physical contact 16 min) Odorless air inhalation (rest 20 min) -&gt
odorless air inhalation (physical contact 16 min) -&gt
test fragrance inhalation (rest 20 min) -&gt
test fragrance inhalation (physical contact 16 min)

Sponsors

Osaka Metropolitan University
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1) Individual who has received sufficient explanation about purpose and content of research, and consenting ability, and who volunteers with his/her free intent and gives written informed consent. 2) Healthy male/female couples aged 18 years or older at the time of informed consent.

Exclusion criteria

Exclusion criteria: 1) Individuals with irregular menstrual cycles or postmenopausal 2) Individuals who are pregnant, have a child under 2 years old, or are breastfeeding 3) Individuals with respiratory circulatory, psychiatric, or neurological disorders 4) Individuals who have been diagnosed with hypertension, hypotension, or arrhythmia 5) Individuals who are taking medication, except for those who regularly take oral contraceptive pills. 6) Smokers (excluding users of electronic cigarettes). 7) Individuals who find the test fragrance offensive 8) Individuals who have been partners for less than 3 months 9) Individual whom principal investigator judged to be inappropriate as a subject 10) Individuals whose partner falls under 1) to 9)

Design outcomes

Primary

MeasureTime frame
Comparison of changes in salivary oxytocin concentrations from before to 16 minutes after physical contact between odorless and scent inhalation conditions.

Secondary

MeasureTime frame
Comparison of changes in heart rate from before to after 16 minutes of physical contact between odorless and scent inhalation conditions. Comparison of changes in autonomic nervous function from before to after 16 minutes of physical contact between odorless and scent inhalation conditions. Comparison of changes in subjective states from before to after 16 minutes of physical contact between odorless and scent inhalation conditions. Comparison of changes in interpersonal emotional responses from before to after 16 minutes of physical contact between odorless and scent inhalation conditions. Comparison of changes in heart rate from before to after 20 minutes of rest between odorless and scent inhalation conditions. Comparison of changes in autonomic nervous function from before to after 20 minutes of rest between odorless and scent inhalation conditions. Comparison of changes in subjective states from before to after 20 minutes of rest between odorless and scent inhalation conditions. Comparison of changes in interpersonal emotional responses from before to after 20 minutes of rest between odorless and scent inhalation conditions.

Countries

Japan

Contacts

Public ContactEriko Kawai

Osaka Metropolitan University Center for Health Science Innovation

gr-knky-chsi@omu.ac.jp06-6605-2905

Outcome results

None listed

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