UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000060336
Receipt number R000069018
Scientific Title Investigation of the effect of repeated use of steam heat sheets before menstruation on alleviating menstrual-associated symptoms
Date of disclosure of the study information 2026/01/13
Last modified on 2026/01/13 14:24:18

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Basic information

Public title

Investigation of the effect of repeated use of steam heat sheets before menstruation on alleviating menstrual-associated symptoms

Acronym

Investigation of the effect of repeated use of steam heat sheets before menstruation on alleviating menstrual-associated symptoms

Scientific Title

Investigation of the effect of repeated use of steam heat sheets before menstruation on alleviating menstrual-associated symptoms

Scientific Title:Acronym

Investigation of the effect of repeated use of steam heat sheets before menstruation on alleviating menstrual-associated symptoms

Region

Japan


Condition

Condition

Not applicable

Classification by specialty

Not applicable Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

Investigation of the effect of repeated use of steam heat sheets before menstruation on alleviating menstrual-associated symptoms

Basic objectives2

Others

Basic objectives -Others

To determine the optimal duration of application of steam heat sheets to the lower abdomen for alleviating menstrual-associated symptoms.

Trial characteristics_1

Exploratory

Trial characteristics_2


Developmental phase

Not applicable


Assessment

Primary outcomes

Menstrual-associated symptoms (pain) according to the duration of steam heat sheet application (7 days, 1 day, no application).

Key secondary outcomes

Differences in menstrual-associated symptoms (non-pain symptoms), and in expressions used to describe pain and perceived effectiveness (subjective descriptors of effect), according to the duration of steam heat sheet application (7 days, 1 day, no application).


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

No need to know


Intervention

No. of arms

2

Purpose of intervention

Treatment

Type of intervention

Other

Interventions/Control_1

In menstrual cycle 1, apply a steam heat sheet to the lower abdomen for 8 hours per day for 7 consecutive days (daily for 7 days, starting 7 days before the expected Day 2 of menstruation). Cycle 2: washout (no application). In menstrual cycle 3, apply a steam heat sheet to the lower abdomen for 8 hours on a single day (Day 2 of menstruation).

Interventions/Control_2

In menstrual cycle 1, apply a steam heat sheet to the lower abdomen for 8 hours on a single day (Day 2 of menstruation). Cycle 2: washout (no application). In menstrual cycle 3, apply a steam heat sheet to the lower abdomen for 8 hours per day for 7 consecutive days (daily for 7 days, starting 7 days before the expected Day 2 of menstruation).

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

49 years-old >=

Gender

Female

Key inclusion criteria

1. Females aged 20-49 years.
2. Regular menstrual cycles (cycle length 25-38 days, with month-to-month variability generally within <=3 days) and able to report the dates/durations of the three most recent menstrual periods.
3. Self-reported mild menstrual-associated symptoms (symptoms that do not interfere with daily activities or work).

Key exclusion criteria

1. Currently receiving outpatient care, taking medication for, or with a history of gynecological disorders (e.g., dysmenorrhea, uterine fibroids, adenomyosis, endometriosis, cervical intraepithelial neoplasia, cervical cancer, etc.).
2. Regular use of analgesics (including over-the-counter medications) during the premenstrual or menstrual phase.
3. Presence of hepatic, renal, cardiac, respiratory, endocrine, metabolic (e.g., hypertension), neurological disorders, disorders of consciousness, diabetes, or other medical conditions that would preclude participation in the study.
4. Received medication therapy or surgery for a serious illness or injury within one month prior to study initiation and judged by the principal investigator or study staff to be unsuitable for participation.
5. Receiving hormone replacement therapy (HRT) or taking medications that may affect hormonal status (including oral contraceptives).
6. Pregnant, breastfeeding, or planning to become pregnant during the study period.
7. History of eczema or urticaria induced by steam-heat stimulation.
8. Impaired thermal sensation or hypersensitivity to temperature.
9. Any other condition judged by the principal investigator or study staff to render the participant unsuitable for the study.
10. Participation in another clinical trial of drugs or food products within the past month, or planned participation in such a trial during this study.

Target sample size

20


Research contact person

Name of lead principal investigator

1st name Satoko
Middle name
Last name Fukagawa

Organization

Kao Corporation

Division name

Human Health Care Products Research

Zip code

131-8501

Address

2-1-3, Bunka, Sumida-ku, Tokyo, 131-8501, JAPAN

TEL

+81-70-3297-0978

Email

fukagawa.satoko@kao.com


Public contact

Name of contact person

1st name Mai
Middle name
Last name Tsunoda

Organization

Kao Corporation

Division name

Human Health Care Products Research

Zip code

321-3497

Address

2606, Akabane, Ichikai-machi, Haga-gun, Tochigi, 321-3497, JAPAN

TEL

+81-70-3296-8210

Homepage URL


Email

tsunoda.mai@kao.com


Sponsor or person

Institute

Kao Corporation

Institute

Department

Personal name



Funding Source

Organization

Kao Corporation

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

Human Research Ethics Committee, Kao Corporation

Address

2-1-3 Bunka, Sumida-ku, Tokyo 131- 8501, JAPAN

Tel

+81-3-5630-9064

Email

morisaki.naoko@kao.com


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 01 Month 13 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 12 Month 26 Day

Date of IRB

2026 Year 01 Month 07 Day

Anticipated trial start date

2026 Year 01 Month 13 Day

Last follow-up date

2026 Year 05 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

2026 Year 01 Month 13 Day

Last modified on

2026 Year 01 Month 13 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000069018