UMIN-ICDS Clinical Trial
| Unique ID issued by UMIN | UMIN000059634 |
|---|---|
| Receipt number | R000068212 |
| Scientific Title | Effects of Hinoki (Japanese cypress) essential oil olfactory stimulation on prefrontal cortex activity and autonomic nervous activity: a crossover trial |
| Date of disclosure of the study information | 2025/11/04 |
| Last modified on | 2025/11/04 14:25:05 |
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Basic information
Public title
Effects of Hinoki (Japanese cypress) essential oil olfactory stimulation on prefrontal cortex activity and autonomic nervous activity: a crossover trial
Acronym
Effects of Hinoki (Japanese cypress) essential oil olfactory stimulation on prefrontal cortex activity and autonomic nervous activity: a crossover trial
Scientific Title
Effects of Hinoki (Japanese cypress) essential oil olfactory stimulation on prefrontal cortex activity and autonomic nervous activity: a crossover trial
Scientific Title:Acronym
Effects of Hinoki (Japanese cypress) essential oil olfactory stimulation on prefrontal cortex activity and autonomic nervous activity: a crossover trial
Region
| Japan |
Condition
Condition
Healthy person
Classification by specialty
| Adult |
Classification by malignancy
Others
Genomic information
NO
Objectives
Narrative objectives1
This study aims to elucidate the effects of olfactory stimulation with essential oil extracted from Hinoki (Japanese cypress) wood on prefrontal cortex activity and autonomic nervous activity in healthy Japanese university and graduate students aged 20-29.
Basic objectives2
Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase
Assessment
Primary outcomes
1) Prefrontal activity using near-infrared time-resolved spectroscopy
2) Sympathetic and parasympathetic nervous activity as indicated by heart rate variability
3) Heart rate
Key secondary outcomes
1) Profile of Mood State (POMS2 short form)
2) Modified semantic differential method
3) Kwansei Gakuin (KG) daily life questionnaire
4) Tokai University daily life survey
5) Type A tendency distinction table
6) Patient Health Qeustionnaire-9
4) Trait Anxiety of State-Trait Anxiety Inventory
Base
Study type
Interventional
Study design
Basic design
Cross-over
Randomization
Randomized
Randomization unit
Individual
Blinding
Open -no one is blinded
Control
Placebo
Stratification
Dynamic allocation
Institution consideration
Blocking
Concealment
Intervention
No. of arms
2
Purpose of intervention
Prevention
Type of intervention
| Other |
Interventions/Control_1
Olfactory stimulation with essential oil extracted from Japanese cypress (Hinoki) wood (90 s) -> Rest period -> Control: No odor (air, 90 s)
Interventions/Control_2
Control: No odor (air, 90 s) -> Rest period -> Olfactory stimulation with essential oil extracted from Japanese cypress (Hinoki) wood (90 s)
Interventions/Control_3
Interventions/Control_4
Interventions/Control_5
Interventions/Control_6
Interventions/Control_7
Interventions/Control_8
Interventions/Control_9
Interventions/Control_10
Eligibility
Age-lower limit
| 20 | years-old | <= |
Age-upper limit
| 30 | years-old | > |
Gender
Male and Female
Key inclusion criteria
Healthy person
Key exclusion criteria
1) History of allergy to Hinoki (Japanese cypress) wood or Hinoki essential oil.
2) Respiratory conditions such as asthma, chronic rhinitis, or seasonal allergic rhinitis (hay fever), by self-report or prior physician diagnosis.
3) Currently receiving treatment for any disease at a medical institution.
4) Current smoking habit.
5) History or diagnosis of cardiac arrhythmia.
6) Menstruation on the test day (female participants only).
Target sample size
80
Research contact person
Name of lead principal investigator
| 1st name | Harumi |
| Middle name | |
| Last name | Ikei |
Organization
Chiba University
Division name
Center for Environment, Health and Field Sciences
Zip code
277-0882
Address
6-2-1 Kashiwa-no-ha, Kashiwa, Chiba 277-0882, Japan
TEL
04-7137-8184
hikei@chiba-u.jp
Public contact
Name of contact person
| 1st name | Harumi |
| Middle name | |
| Last name | Ikei |
Organization
Chiba University
Division name
Center for Environment, Health and Field Sciences
Zip code
277-0882
Address
6-2-1 Kashiwa-no-ha, Kashiwa, Chiba 277-0882, Japan
TEL
04-7137-8184
Homepage URL
http://www.fc.chiba-u.jp/research/naturetherapy/
hikei@chiba-u.jp
Sponsor or person
Institute
Chiba University
Institute
Department
Personal name
Harumi Ikei
Funding Source
Organization
Tokyo Log Wholesalers' Association
Organization
Division
Category of Funding Organization
Other
Nationality of Funding Organization
Other related organizations
Co-sponsor
Name of secondary funder(s)
IRB Contact (For public release)
Organization
The Ethics Committees of the Center for Environment, Health and Field Sciences, Chiba University
Address
6-2-1 Kashiwa-no-ha, Kashiwa, Chiba 277-0882, Japan
Tel
04-7137-8010
field-rinri@chiba-u.jp
Secondary IDs
Secondary IDs
NO
Study ID_1
Org. issuing International ID_1
Study ID_2
Org. issuing International ID_2
IND to MHLW
Institutions
Institutions
千葉大学環境健康フィールド科学センター（千葉県）
Other administrative information
Date of disclosure of the study information
| 2025 | Year | 11 | Month | 04 | Day |
Related information
URL releasing protocol
Publication of results
Unpublished
Result
URL related to results and publications
Number of participants that the trial has enrolled
Results
Results date posted
Results Delayed
Results Delay Reason
Date of the first journal publication of results
Baseline Characteristics
Participant flow
Adverse events
Outcome measures
Plan to share IPD
IPD sharing Plan description
Progress
Recruitment status
Preinitiation
Date of protocol fixation
| 2025 | Year | 09 | Month | 19 | Day |
Date of IRB
| 2025 | Year | 10 | Month | 30 | Day |
Anticipated trial start date
| 2025 | Year | 11 | Month | 04 | Day |
Last follow-up date
| 2026 | Year | 01 | Month | 31 | Day |
Date of closure to data entry
Date trial data considered complete
Date analysis concluded
Other
Other related information
Management information
Registered date
| 2025 | Year | 11 | Month | 04 | Day |
Last modified on
| 2025 | Year | 11 | Month | 04 | Day |
Link to view the page
Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000068212
