UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000059228
Receipt number R000067738
Scientific Title Effects of Continuous Intake of the Test Food on Improvement of Bowel Movements in Individuals with a Tendency to Constipation
Date of disclosure of the study information 2026/04/01
Last modified on 2025/10/23 11:39:05

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Basic information

Public title

Effects of Continuous Intake of the Test Food on Improvement of Bowel Movements in Individuals with a Tendency to Constipation

Acronym

Effects of Continuous Intake of the Test Food on Improvement of Bowel Movements in Individuals with a Tendency to Constipation

Scientific Title

Effects of Continuous Intake of the Test Food on Improvement of Bowel Movements in Individuals with a Tendency to Constipation

Scientific Title:Acronym

Effects of Continuous Intake of the Test Food on Improvement of Bowel Movements in Individuals with a Tendency to Constipation

Region

Japan


Condition

Condition

Healthy subjects

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study on the Effects of Four-Week Continuous Intake of the Test Food on Gastrointestinal and Related Symptoms in Healthy Individuals with Constipation

Basic objectives2

Safety,Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

(1) Bowel Movement Questionnaire

Key secondary outcomes

(1) Skin, Allergic Symptoms, and Fatigue Questionnaire (VAS)
(2) Stress Questionnaire (POMS-2 Adult Short Form)
(3) Gut Microbiota Analysis
(4) Short-Chain Fatty Acids
(5) Fecal Metabolites, etc.
(6) Skin Viscoelasticity
(7) Trans Epidermal Water Loss
(8) Daily Log (Frequency/Severity of Health Concerns/Problems)


Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Double blind -all involved are blinded

Control

Placebo

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

3

Purpose of intervention

Treatment

Type of intervention

Food

Interventions/Control_1

4-week intake of test food-1

Interventions/Control_2

4-week intake of test food-2

Interventions/Control_3

4-week intake of placebo foods

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

65 years-old >

Gender

Male and Female

Key inclusion criteria

(1) Male and female participants aged 20 years or older and younger than 65 years at the time of informed consent.
(2) Individuals whose bowel movement frequency is between 3 and 5 times per week
(3) Individuals who have received sufficient explanation regarding the purpose and content of the study, have the capacity to consent, fully understand the information provided, voluntarily agree to participate, and provide their own consent via electronic informed consent (eConsent).

Key exclusion criteria

(1) Individuals using bowel-regulating drugs, such as laxatives or antidiarrheals, including over-the-counter products.
(2) Those under treatment for chronic diseases such as diabetes, dyslipidemia, or hypertension.
(3) Those with malignant tumors; cerebrovascular, cardiac, hepatic, renal, hematologic, or endocrine disease; gastric or duodenal ulcer under treatment; or a severe medical history.
(4) History of major gastrointestinal surgery, including gastrectomy, anastomosis, or intestinal resection, except for appendectomy only.
(5) Dermatological conditions such as atopic dermatitis, allergy, eczema, or hypersensitivity under treatment.
(6) Cosmetic procedures at the evaluation site within the past 12 weeks, such as collagen, hyaluronic acid, botulinum toxin, or laser, or those unable to refrain during the study.
(7) Excessive tanning or inability to avoid intentional sun exposure.
(8) Allergy to the test food.
(9) Habitual use of health foods, foods with functional claims, probiotics such as yogurt or lactic drinks, or supplements, and unable to stop during the study.
(10) Heavy smokers, defined as more than 20 cigarettes per day.
(11) Regular alcohol consumers, defined as 60 grams or more of pure alcohol per day, approximately sake three servings, beer 1,500 mL, shochu two servings, or wine 600 mL, on six or more days per week.
(12) Extremely irregular sleep or diet, such as shift or night workers.
(13) Likely to experience major lifestyle, diet, or exercise changes during the study.
(14) Women who are lactating, pregnant, possibly pregnant, or planning pregnancy.
(15) Currently in another clinical trial, within the past four weeks, or planning to join during this study.
(16) Deemed ineligible by the principal investigator or sub-investigator.
(17) Deemed unsuitable by the sponsor.

Target sample size

180


Research contact person

Name of lead principal investigator

1st name Soma
Middle name
Last name Ode

Organization

Macromill, Inc.

Division name

Clinical Trial Department, Life Science Division

Zip code

108-0075

Address

Shinagawa East One Tower 11F, 2-16-1 Konan, Minato-ku, Tokyo, Japan

TEL

03-6716-0700

Email

ohde@macromill.com


Public contact

Name of contact person

1st name Yuki
Middle name
Last name Mori

Organization

Macromill, Inc.

Division name

Clinical Trial Department, Life Science Division

Zip code

108-0075

Address

Shinagawa East One Tower 11F, 2-16-1 Konan, Minato-ku, Tokyo, Japan

TEL

03-6716-0700

Homepage URL


Email

yuk_mori@macromill.com


Sponsor or person

Institute

Macromill, Inc.

Institute

Department

Personal name



Funding Source

Organization

MP Gokyo Food & Chemical Co., Ltd.

Organization

Division

Category of Funding Organization

Profit organization

Nationality of Funding Organization



Other related organizations

Co-sponsor

PreMedica Inc.

Name of secondary funder(s)



IRB Contact (For public release)

Organization

Ethical Committee of Kobuna Orthopedics Clinic

Address

311-2 Joto-machi, Maebashi-shi, Gumma

Tel

027-212-5608

Email

sagawa@mc-connect.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 04 Month 01 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 29 Day

Date of IRB

2025 Year 09 Month 29 Day

Anticipated trial start date

2025 Year 09 Month 30 Day

Last follow-up date

2026 Year 03 Month 08 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 09 Month 29 Day

Last modified on

2025 Year 10 Month 23 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000067738