UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000054347
Receipt number R000061933
Scientific Title Effects of olfactory stimulation on saliva secretion and swallowing reflex
Date of disclosure of the study information 2024/05/15
Last modified on 2024/05/09 11:41:29

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Basic information

Public title

Effects of olfactory stimulation on saliva secretion and swallowing reflex

Acronym

Effects of olfactory stimulation on saliva secretion and swallowing reflex

Scientific Title

Effects of olfactory stimulation on saliva secretion and swallowing reflex

Scientific Title:Acronym

Effects of olfactory stimulation on saliva secretion and swallowing reflex

Region

Japan


Condition

Condition

healthy adults

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

Preventive measures for aspiration pneumonia include maintaining oral hygiene through oral care, enhancing airway sensation with drug therapy, and improving coughing ability through rehabilitation. In particular, as subclinical aspiration during the night is the primary cause of aspiration pneumonia, we believe that maintaining oral hygiene through oral care and the sterilizing effect of saliva are essential. Saliva has the function of regulating the oral environment, and has been shown to have functions such as lubricating, buffering, digestive, and antibacterial effects. In this study, we would like to clarify the changes in saliva volume and the effects on the swallowing reflex when aroma oils such as ginger and lavender are given as olfactory stimuli to young people aged 18 to 23.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Add 3 drops of black pepper, lavender, ginger, and purified water to the tip of the muette stick.The subjects were instructed to bring the muette closer to their nose little by little, stop when they felt the scent, and smell the scent for a specified period of time (60 seconds).After that, the examiner collects saliva from the subject and measures the amount of saliva. Additionally, we measure the RSST.

Key secondary outcomes



Base

Study type

Interventional


Study design

Basic design

Single arm

Randomization

Non-randomized

Randomization unit


Blinding

Open -no one is blinded

Control

Self control

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

1

Purpose of intervention

Prevention

Type of intervention

Other

Interventions/Control_1

Intervention period (measurement 6 minutes x 4 times), amount of intervention (3 types of aroma oil and purified water)

Interventions/Control_2


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

18 years-old <=

Age-upper limit

23 years-old >=

Gender

Male and Female

Key inclusion criteria

healthy adults

Key exclusion criteria


1)Individuals diagnosed with dysphagia.
2)Individuals with anatomical (static) barriers to swallowing dysfunction.
3)Individuals with conditions affecting smell, such as allergic rhinitis.
4)Individuals who may be pregnant or are currently pregnant or breastfeeding.
5)Individuals experiencing discomfort such as nausea or pain due to dental, tongue, or olfactory stimulation.
6)Individuals wearing dentures.
7)Individuals with dementia or communication impairments that make it difficult to communicate intentions.
8)Individuals objectively assessed as lacking the ability to provide informed consent.

Target sample size

50


Research contact person

Name of lead principal investigator

1st name MEGUMI
Middle name
Last name MIYAMOTO

Organization

Kumamoto Health Science University

Division name

Faculty of Health Science Department of Rehabilitation Division of Speech-Language-Hearing Therapy

Zip code

861-5598

Address

325 Izumimachi,Kita-ku,Kumamoto

TEL

096-275-2212

Email

meg-mya@kumamoto-hsu.ac.jp


Public contact

Name of contact person

1st name Akiko
Middle name
Last name Nagano

Organization

Kumamoto Health Science University

Division name

Planning and Personnel Department

Zip code

861-5598

Address

325 Izumimachi,Kita-ku,Kumamoto

TEL

096-275-2111

Homepage URL


Email

kikaku@kuamoto-hsu.ac.jp


Sponsor or person

Institute

Kumamoto Health Science University

Institute

Department

Personal name



Funding Source

Organization

Kumamoto Health Science University

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

Kumamoto Health Science University Life Science Ethical Review Board

Address

325 Izumimachi,Kita-ku,Kumamoto

Tel

0962752111

Email

kikaku@kumamoto-hsu.ac.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



Other administrative information

Date of disclosure of the study information

2024 Year 05 Month 15 Day


Related information

URL releasing protocol


Publication of results

Published


Result

URL related to results and publications


Number of participants that the trial has enrolled

30

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

Completed

Date of protocol fixation

2023 Year 05 Month 11 Day

Date of IRB

2023 Year 06 Month 22 Day

Anticipated trial start date

2023 Year 07 Month 03 Day

Last follow-up date

2023 Year 07 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

2024 Year 05 Month 09 Day

Last modified on

2024 Year 05 Month 09 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000061933