UMIN-ICDS Clinical Trial
| Unique ID issued by UMIN | UMIN000062208 |
|---|---|
| Receipt number | R000071183 |
| Scientific Title | Effects of Hot Spring Bathing on Objective and Subjective Stress: Comparison between a Radon Hot Spring Facility (A Comprehensive Environment Including Amenities) and Plain Hot Water Bathing |
| Date of disclosure of the study information | 2026/07/10 |
| Last modified on | 2026/07/10 19:07:23 |
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Basic information
Public title
Effects of Hot Spring Bathing on Objective and Subjective Stress: Comparison between a Radon Hot Spring Facility (A Comprehensive Environment Including Amenities) and Plain Hot Water Bathing
Acronym
Effects of Hot Spring Bathing on Objective and Subjective Stress: Comparison between a Radon Hot Spring Facility (A Comprehensive Environment Including Amenities) and Plain Hot Water Bathing
Scientific Title
Effects of Hot Spring Bathing on Objective and Subjective Stress: Comparison between a Radon Hot Spring Facility (A Comprehensive Environment Including Amenities) and Plain Hot Water Bathing
Scientific Title:Acronym
Effects of Hot Spring Bathing on Objective and Subjective Stress: Comparison between a Radon Hot Spring Facility (A Comprehensive Environment Including Amenities) and Plain Hot Water Bathing
Region
| Japan |
Condition
Condition
Healthy adult
Classification by specialty
| Adult |
Classification by malignancy
Others
Genomic information
NO
Objectives
Narrative objectives1
To examine the effects of radon hot spring bathing on objective and subjective stress indicators in middle-aged and older adults, compared to plain hot water bathing, and to verify its anti-stress effects.
Basic objectives2
Efficacy
Basic objectives -Others
Trial characteristics_1
Trial characteristics_2
Developmental phase
Assessment
Primary outcomes
The study involved 38 healthy middle aged and older adults. At the Ryuo Radon Hot Spring facility in Kai City, Yamanashi Prefecture, participants took 10 minute baths in both radon hot water and plain hot water at 39 degrees on the same day, and the effects were compared using a crossover design. Before and after each bath, we measured salivary amylase activity, Visual Analogue Scale, systolic blood pressure, diastolic blood pressure, and pulse.
Key secondary outcomes
Base
Study type
Interventional
Study design
Basic design
Cross-over
Randomization
Randomized
Randomization unit
Individual
Blinding
Open -no one is blinded
Control
No treatment
Stratification
Dynamic allocation
Institution consideration
Blocking
Concealment
Intervention
No. of arms
2
Purpose of intervention
Prevention
Type of intervention
| Device,equipment | Other |
Interventions/Control_1
Radon hot spring bath
Interventions/Control_2
Bathing in plain hot water
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
| 52 | years-old | <= |
Age-upper limit
| 88 | years-old | >= |
Gender
Male and Female
Key inclusion criteria
Someone who has no trouble taking a bath
Key exclusion criteria
People with serious heart, lung, or hormonal conditions, as well as those with a medical history that makes bathing difficult
Target sample size
38
Research contact person
Name of lead principal investigator
| 1st name | TOMOAKI |
| Middle name | |
| Last name | SUZUKI |
Organization
Institute for Gerontology, J. F. Oberlin University
Division name
Elderly Bathing Advisers Association
Zip code
1030022
Address
4th Floor, DK Noa, 13-1 Nihonbashi Muromachi 1-chome, Chuo-ku, Tokyo
TEL
09077330828
t0m0ak1.0219@hotmail.co.jp
Public contact
Name of contact person
| 1st name | TOMOAKI |
| Middle name | |
| Last name | SUZUKI |
Organization
Institute for Gerontology, J. F. Oberlin University
Division name
Collaborating researcher
Zip code
1940294
Address
3758 Tokiwa-cho, Machida City, Tokyo
TEL
09077330828
Homepage URL
t0m0ak1.0219@hotmail.co.jp
Sponsor or person
Institute
Other
Institute
Department
Personal name
Funding Source
Organization
Other
Organization
Division
Category of Funding Organization
Profit organization
Nationality of Funding Organization
Other related organizations
Co-sponsor
Name of secondary funder(s)
IRB Contact (For public release)
Organization
Institute for Gerontology, J. F. Oberlin University
Address
3758 Tokiwa-cho, Machida City, Tokyo
Tel
0427979774
t0m0ak1.0219@hotmail.co.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
| 2026 | Year | 07 | Month | 10 | 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
38
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
| 2025 | Year | 11 | Month | 10 | Day |
Date of IRB
| 2025 | Year | 05 | Month | 27 | Day |
Anticipated trial start date
| 2026 | Year | 07 | Month | 10 | Day |
Last follow-up date
| 2026 | Year | 07 | Month | 10 | Day |
Date of closure to data entry
Date trial data considered complete
Date analysis concluded
Other
Other related information
Management information
Registered date
| 2026 | Year | 07 | Month | 10 | Day |
Last modified on
| 2026 | Year | 07 | Month | 10 | Day |
Link to view the page
Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000071183
