UMIN-CTR Clinical Trial

Unique ID issued by UMIN UMIN000055405
Receipt number R000063272
Scientific Title Daily stress reduction through synbiotic food
Date of disclosure of the study information 2024/09/05
Last modified on 2025/09/04 09:58:29

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Basic information

Public title

Daily stress reduction through synbiotic food

Acronym

Daily stress reduction through synbiotic food

Scientific Title

Daily stress reduction through synbiotic food

Scientific Title:Acronym

Daily stress reduction through synbiotic food

Region

Japan


Condition

Condition

Healthy adults

Classification by specialty

Adult

Classification by malignancy

Others

Genomic information

NO


Objectives

Narrative objectives1

On-site training causes a greater deal of tension and anxiety for students than the passive lecture in campus and induces stress reaction. The stress response is complex, and it affects the autonomic nervous system, the gastro-intestinal system, the neuroendocrine system, and the immune system, leading to the development of constipation and/or diarrhea and worsening skin conditions, then the intestinal tract, rephrasing as the "second brain", is strongly affected by stress. We hypothesized that a favorable change in the intestinal environment would lead to stress reduction and improve bowel movements and skin conditions. This study will analyze the changes in intestinal flora, stool organic acid concentration, microbial metabolite concentration, and skin condition and stress reaction before and after the intake of synbiotic foods during on-site training.

Basic objectives2

Efficacy

Basic objectives -Others


Trial characteristics_1


Trial characteristics_2


Developmental phase



Assessment

Primary outcomes

salivary cortisol and alpha-amylase (before, after 2 weeks and 4 weeks intake)

Key secondary outcomes

intestinal flora, stool organic acid concentration, microbial metabolite concentration, skin condition, stress status


Base

Study type

Interventional


Study design

Basic design

Parallel

Randomization

Randomized

Randomization unit

Individual

Blinding

Open -no one is 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

Intervention group takes 2 packets of G fine, a synbiotics, per day for 4 weeks (with 100 ml water per packet)

Interventions/Control_2

Control group takes 100 ml of water twice a day

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

39 years-old >=

Gender

Male and Female

Key inclusion criteria

The following conditions must be met during the study period: (1) Constipation tendency with 3-5 bowel movements per week, (2) No diet supplements, replacement diets, or beauty treatments, (3) No facial beauty treatments, and (4) No excessive UV exposure such as swimming, mountain climbing, skiing, or sunbathing during the study period.

Key exclusion criteria

1) Those who are taking drugs such as antibiotics that affect digestion and absorption, 2) Those who have digestive disorders (including irritable bowel syndrome) or a history of surgery (excluding appendectomy) that affect digestion and absorption or defecation, 3) Those who have skin-related diseases, 4) Those who suffer from heart or kidney disease, diabetes or other serious diseases, 5) Those who are participating in other research or surveys, 6) Those who have a disordered diet such as extreme fasting or overeating, and 7) Those who have a history of certain health problems that may be related to bowel regulation. (5) Those who are participating in other research or investigation, (6) Those who are exposed to a large amount of ultraviolet rays on a daily basis, (7) Those who have a disordered diet such as extreme fasting or overeating, (8) Those who cannot stop additional intake of food for specified health use, functional foods, yogurt, lactic acid bacteria drinks, supplements or other food/beverage with possible functionality that is believed to be involved in the bowel regulating action, except for those who are unable to stop the intake of such foods or beverages. (viii) Those who are unable to stop the intake of foods/drinks that are considered to be involved in intestinal regulation, except for natto, which shall be prohibited during the study period, (ix) Those who have allergies (to foods related to the test foods), (x) Those who are pregnant, lactating, or intend to become pregnant during the study period. (11) Any other person whom the principal investigator deems inappropriate as a subject for this study.

Target sample size

30


Research contact person

Name of lead principal investigator

1st name Makoto
Middle name
Last name Miyoshi

Organization

Kobe University Graduate School of Health Sciences

Division name

Department of Biophysics

Zip code

6540142

Address

7-10-2, Tomogaoka, Suma-ku, Kobe

TEL

0787964615

Email

miyoshi@harbor.kobe-u.ac.jp


Public contact

Name of contact person

1st name Makoto
Middle name
Last name Miyoshi

Organization

Kobe University Graduate School of Health Sciences

Division name

Department of Biophysics

Zip code

6540142

Address

7-10-2, Tomogaoka, Suma-ku, Kobe

TEL

0787964615

Homepage URL


Email

miyoshi@harbor.kobe-u.ac.jp


Sponsor or person

Institute

Kobe University Graduate School of Health Sciences

Institute

Department

Personal name



Funding Source

Organization

Kobe University Graduate School of Health Sciences

Organization

Division

Category of Funding Organization

Self funding

Nationality of Funding Organization



Other related organizations

Co-sponsor


Name of secondary funder(s)



IRB Contact (For public release)

Organization

Kobe University Graduate School of Health Sciences

Address

7-10-2, Tomogaoka, Suma-ku, Kobe

Tel

0787964615

Email

miyoshi@harbor.kobe-u.ac.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

2024 Year 09 Month 05 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

Open public recruiting

Date of protocol fixation

2024 Year 07 Month 04 Day

Date of IRB

2024 Year 08 Month 16 Day

Anticipated trial start date

2024 Year 09 Month 05 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

2024 Year 09 Month 03 Day

Last modified on

2025 Year 09 Month 04 Day



Link to view the page

Value
https://center6.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000063272