UMIN-ICDS Clinical Trial

Unique ID issued by UMIN UMIN000061496
Receipt number R000070358
Scientific Title Effects of continuous intake of soy protein, agar, or BARLEYmax on intestinal microbiota and performance in athletes
Date of disclosure of the study information 2026/05/08
Last modified on 2026/05/08 16:30:59

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Basic information

Public title

Effects of continuous intake of soy protein, agar,or BARLEYmax on intestinal microbiota and performance in athletes

Acronym

Effects of continuous intake of soy protein, agar, or BARLEYmax on intestinal microbiota and performance in athletes

Scientific Title

Effects of continuous intake of soy protein, agar, or BARLEYmax on intestinal microbiota and performance in athletes

Scientific Title:Acronym

Effects of continuous intake of soy protein, agar, or
BARLEYmax on intestinal microbiota and performance in athletes

Region

Japan


Condition

Condition

Healthy Adults

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

The purpose of this study is to exploratorily evaluate the effects of 8-week continuous intake of test foods (soy protein, agar, or BARLEYmax) on the intestinal environment, QOL, and performance in adult male and female athletes.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1

Exploratory

Trial characteristics_2

Explanatory

Developmental phase

Not applicable


Assessment

Primary outcomes

Intestinal microbiota in stool at the beginning of and after the intake for 8 weeks.

Key secondary outcomes

QOL questionnaire (defecation status, etc.) and performance evaluation (various sports indicators)


Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Open -no one is blinded

Control

Active

Stratification


Dynamic allocation


Institution consideration


Blocking


Concealment



Intervention

No. of arms

3

Purpose of intervention

Prevention

Type of intervention

Food

Interventions/Control_1

Intake 10-15g of test food A (soy protein) once a day daily for 8 weeks.

Interventions/Control_2

Intake 2-10g of test food B (agar) once a day daily for 8 weeks.

Interventions/Control_3

Intake 6-10g of test food C (barley food) once a day daily for 8 weeks.

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. Persons who received a sufficient explanation of the purpose and contents of the study, have the capacity to consent, applied with free will with sufficient understanding, and agreed to participate.

2. Japanese men and women aged 18 to 64 at the time of informed consent.

3. Athletes who are daily engaged in sports competitions or training.

4. Persons who do not suffer from intestinal diseases (including those judged not to require immediate treatment).

Key exclusion criteria

1. Persons who may develop abdominal pain due to materials containing soy protein (TVP), agar, or BARLEYmax.

2. Persons currently diagnosed with small or large intestinal diseases (including inflammatory bowel disease (IBD) and other gastrointestinal diseases with inflammation), those who have undergone or will require resection of the small or large intestine.

3. Persons who routinely (3 or more days per week) consume materials containing soy protein (TVP), agar, or BARLEYmax, or who did so within one month before the pre-test.

4. Persons diagnosed with malignant tumors or being treated for cranial nerve, heart, kidney, thyroid diseases, or diabetes, or with a history of serious diseases such as liver disease. (Excluding those judged by the investigator to have no impact on the study, such as hypertension treatment.)

5. Persons who consume excessive alcohol (more than 60g of alcohol per day).

6. Persons at risk of developing allergies related to the test foods.

7. Persons judged inappropriate as participants based on the background survey.

8. Persons who participated in other clinical studies within one month before the start of this study or plan to participate in other studies after consenting.

9. Persons who are pregnant, breastfeeding, or planning to become pregnant during the study period.

10. Others judged as inappropriate by the principal investigator.

Target sample size

300


Research contact person

Name of lead principal investigator

1st name Takumi
Middle name
Last name Tochio

Organization

BIOSIS Lab. Co., Ltd.

Division name

CEO

Zip code

470-1101

Address

Room 506, Building No. 11, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, JAPAN

TEL

090-6904-6772

Email

takumitochiobiz@gmail.com


Public contact

Name of contact person

1st name Takumi
Middle name
Last name Tochio

Organization

BIOSIS Lab. Co., Ltd.

Division name

CEO

Zip code

470-1101

Address

Room 506, Building No. 11, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake, Aichi, JAPAN

TEL

090-6904-6772

Homepage URL


Email

takumitochiobiz@gmail.com


Sponsor or person

Institute

BIOSIS Lab. Co., Ltd.

Institute

Department

Personal name



Funding Source

Organization

Showa Sangyo Co., Ltd., BUBBLE STAR Co., Ltd., Ina Food Industry 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

The Ethics Committee of Healthcare Systems Co., Ltd

Address

1-14-18, Shirakane, Showa-ku, Nagoya, Aichi, JAPAN

Tel

03-6809-2722

Email

soumu@hc-sys.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 05 Month 08 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

2026 Year 04 Month 23 Day

Date of IRB

2026 Year 05 Month 07 Day

Anticipated trial start date

2026 Year 05 Month 11 Day

Last follow-up date

2026 Year 12 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 05 Month 08 Day

Last modified on

2026 Year 05 Month 08 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/icdr_e/ctr_view.cgi?recptno=R000070358