UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000060386
Receipt number R000069082
Scientific Title Effects of Medium-Chain Triglyceride (MCT) Intake on Gut Microbiota, Bowel Habits, Sleep, and Body Composition in Female High School Softball Players
Date of disclosure of the study information 2026/01/19
Last modified on 2026/01/17 00:30:57

* This page includes information on clinical trials registered in UMIN clinical trial registed system.
* We don't aim to advertise certain products or treatments


Basic information

Public title

Effects of Medium-Chain Triglyceride (MCT) Intake on Gut Microbiota, Bowel Habits, Sleep, and Body Composition in Female High School Softball Players

Acronym

Effects of Medium-Chain Triglyceride (MCT) Intake on Gut Microbiota, Bowel Habits, Sleep, and Body Composition in Female High School Softball Players

Scientific Title

Effects of Medium-Chain Triglyceride (MCT) Intake on Gut Microbiota, Bowel Habits, Sleep, and Body Composition in Female High School Softball Players

Scientific Title:Acronym

Effects of Medium-Chain Triglyceride (MCT) Intake on Gut Microbiota, Bowel Habits, Sleep, and Body Composition in Female High School Softball Players

Region

Japan


Condition

Condition

Healthy subjects

Classification by specialty

Not applicable Child

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

The purpose of this study is to exploratorily investigate the effects of two months of medium-chain triglyceride (MCT) intake on gut microbiota, bowel habits, sleep, body composition, and physical condition in nationally competitive female high school softball players.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

Changes in gut microbiota composition
Bowel habits / bowel function status
Sleep quality
Body composition

Key secondary outcomes



Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Non-randomized

Randomization unit


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

Food

Interventions/Control_1

Participants in the intervention group will consume MCT orally at a dose of 2.5 g per serving, three times per day (total 7.5 g/day), for two months while continuing their usual diet and training routines.

Interventions/Control_2

Participants in the control group will not consume MCT and will continue their usual diet and training routines (no-treatment / non-intervention control).

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

15 years-old <=

Age-upper limit

18 years-old >

Gender

Female

Key inclusion criteria

Nationally competitive female high school softball players
Females aged 15-17 years
Not restricted from regular training or competition due to injury or illness during the study period
Owns a smartphone and is able to use it for study-related procedures
Able to provide assent from the participant and informed consent from a parent or legal guardian

Key exclusion criteria

Unable to obtain assent from the participant or informed consent from a parent or legal guardian, or withdrawal of consent during the study
Difficulty in continuing MCT jelly intake or regular training due to injury or illness during the study period
Presence of gastrointestinal, metabolic, or sleep-related disorders that may affect the study outcomes
Currently receiving medical treatment that requires dietary or nutritional restrictions
Occurrence of adverse events such as diarrhea or gastrointestinal discomfort related to MCT jelly intake, making continuation difficult
Missing key outcome data that make statistical analysis infeasible, as determined by the principal investigator
Significant non-compliance with the study protocol

Target sample size

16


Research contact person

Name of lead principal investigator

1st name Michiyo
Middle name
Last name Kimura

Organization

Takasaki University of Health and Welfare

Division name

Faculty of health and Welfare

Zip code

370-0033

Address

37-1, Nakaorui, Takasaki city, Gunma, Japan

TEL

027-352-1290

Email

kimura@takasaki-u.ac.jp


Public contact

Name of contact person

1st name Michiyo
Middle name
Last name Kimura

Organization

Takasaki University of Health and Welfare

Division name

Faculty of Health and Welfwre

Zip code

370-0033

Address

37-1, Nakaorui, Takasaki city, Gunma, Japan

TEL

0273521290

Homepage URL


Email

kimura@takasaki-u.ac.jp


Sponsor or person

Institute

Takasaki University of Health and Welfare

Institute

Department

Personal name



Funding Source

Organization

Takasaki University of Health and Welfare

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

Takasaki University of Health and Welfare

Address

37-1, Nakaorui, Takasaki city, Gunma, Japan

Tel

0273521290

Email

mune@takasaki-u.ac.jp


Secondary IDs

Secondary IDs

YES

Study ID_1

2025-8

Org. issuing International ID_1

Graduate School of Arts and Sciences, The University of Tokyo

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 19 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

16

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

No longer recruiting

Date of protocol fixation

2025 Year 12 Month 03 Day

Date of IRB

2025 Year 12 Month 03 Day

Anticipated trial start date

2026 Year 01 Month 13 Day

Last follow-up date

2027 Year 03 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 17 Day

Last modified on

2026 Year 01 Month 17 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000069082