UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000060701
Receipt number R000069433
Scientific Title Investigation of the effects of the lactic acid bacteria on the regulation of intestinal function -A Randomized, Double-Blind, Placebo-Controlled, Crossover Study-
Date of disclosure of the study information 2026/02/23
Last modified on 2026/02/18 10:09:48

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Basic information

Public title

Investigation of the effects of the lactic acid bacteria on the regulation of intestinal function

Acronym

Investigation of the effects of the lactic acid bacteria on the regulation of intestinal function

Scientific Title

Investigation of the effects of the lactic acid bacteria on the regulation of intestinal function -A Randomized, Double-Blind, Placebo-Controlled, Crossover Study-

Scientific Title:Acronym

Investigation of the effects of the lactic acid bacteria on the regulation of intestinal function -A Randomized, Double-Blind, Placebo-Controlled, Crossover Study-

Region

Japan


Condition

Condition

Healthy adult

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

To investigation the effect of test foods on the regulation of intestinal function in healthy Japanese subjects

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Evaluation of bowel function (intestinal flora, fecal organic acids, fecal putrefactive products)

Key secondary outcomes

-Evaluation of bowel function (defecation questionnaire (defecation frequency, number of defecation days, fecal output, stool consistency, stool color, stool color, post-defecation-feeling))
-Safety evaluation (blood biochemistry, hematology, adverse events)


Base

Study type

Interventional


Study design

Basic design

Cross-over

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

2

Purpose of intervention

Prevention

Type of intervention

Food

Interventions/Control_1

Intake of test foods (1 capsule per day) for 4 weeks

Interventions/Control_2

Intake of placebo food (1 capsule per day) for 4 weeks

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

65 years-old >=

Gender

Male and Female

Key inclusion criteria

(1) Healthy adult males and females between 18 to 65 years
(2) BMI: less than 30 kg/m2
(3) Subjects who have a tendency toward constipation
(4) Subjects who have received sufficient explanation about the purpose and content of the examination, have the ability to consent, have a good understanding, volunteered to participate and agreed to participate in the examination in writing

Key exclusion criteria

1. Subjects who were diagnosed with liver, kidney, gastrointestinal, heart, diabetes, or other diseases that may affect the results of this study, or who have a history of surgery
2. Subjects with a disease currently under treatment
3. Subjects who detect abnormal values by blood test
4. Subjects who determine ineligible by principal investigator
5. Subjects with drug or food allergies
6. Subjects who play high intensity sports and/or are on a diet
7. Subjects who can't stop using supplement, functional foods (including Food for Specified Health Uses or Foods with Function Claims), and/or Specified quasi-drugs during the current study periods
8. Subjects who are unable to stop taking "products that clearly state that lactic acid bacteria are an ingredient," excluding the test food of this study, from the time of obtaining consent, or who plan to take such products during the study period (this refers to products that clearly state that lactic acid bacteria are an ingredient, excluding those that are included in foods as a result of the manufacturing process.)
9. Subjects who are under treatment with medications
10. Those who have taken medicines that may affect the study within one month prior to the pre-test, or those who plan to take such medicines during the study period
11. Subjects who drink excessive alcohol, or who can't stop drinking from one day before each measurement
12. Subjects with smoking habit
13. Subjects with irregular life patterns and lifestyle of reversal of day and night
14. Subjects who have a habit of excessive eating and drinking
15. Subject who has been pregnant or subject who have a plan to become pregnant or breast feed during the study period
16. Subjects who is participating in the other study or planning to participate during the study period
17. Subjects who has taken the blood sampling more than 200 mL within 1 month, or plan the blood sampling during the study period

Target sample size

30


Research contact person

Name of lead principal investigator

1st name Takayuki
Middle name
Last name Nakano

Organization

Kagoshima Immaculate Heart University

Division name

Department of Nursing and Nutrition

Zip code

895-0011

Address

2365 Amatatsu-Cho, Satsuma-Sendai-City Kagoshima 895-0011, Japan

TEL

0996-23-5311

Email

nakano@k-jundai.jp


Public contact

Name of contact person

1st name Takayuki
Middle name
Last name Nakano

Organization

Kagoshima Immaculate Heart University

Division name

Department of Nursing and Nutrition

Zip code

895-0011

Address

2365 Amatatsu-Cho, Satsuma-Sendai-City Kagoshima 895-0011, Japan

TEL

0996-23-5311

Homepage URL


Email

nakano@k-jundai.jp


Sponsor or person

Institute

Kagoshima Immaculate Heart University

Institute

Department

Personal name



Funding Source

Organization

MINAMI NIHON RAKUNO KYODO CO.,LTD.

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

Kagoshima Immaculate Heart University IRB

Address

2365 Amatatsu-Cho, Satsuma-Sendai-City Kagoshima 895-0011, Japan

Tel

0996-23-5311

Email

nakano@k-jundai.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 02 Month 23 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 10 Month 12 Day

Date of IRB

2025 Year 10 Month 14 Day

Anticipated trial start date

2026 Year 02 Month 23 Day

Last follow-up date

2026 Year 06 Month 30 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 02 Month 18 Day

Last modified on

2026 Year 02 Month 18 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000069433