Probiotics on Stress-associated Gastrointestinal Function in University Students

NCT ID: NCT03056846

Last Updated: 2019-03-25

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

634 participants

Study Classification

INTERVENTIONAL

Study Start Date

2017-09-05

Study Completion Date

2018-02-05

Brief Summary

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The purpose of this research study is to evaluate the effect of a daily supplement of probiotics (Lactobacillus gasseri KS-13, Bifidobacterium bifidum G9-1, Bifidobacterium longum MM-2) on stress-associated gastrointestinal function in university students during the time of semester exams.

Detailed Description

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In this randomized, double-blind, placebo-controlled study, undergraduate students planning to take a fall final exam will receive a daily probiotic combination, individual probiotic, or placebo for 6 weeks. Questionnaires will assess gastrointestinal symptoms, immune health, stress and stress management, quality of life, diet, adverse events, and compliance. In a subset of subjects, stool samples will be collected at baseline and at week 5 of the intervention (the week before final exams) to characterize microbial communities.

Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

TRIPLE

Participants Investigators Outcome Assessors

Study Groups

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Placebo

Placebo will be taken as a capsule twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DIETARY_SUPPLEMENT

Placebo will be taken as a capsule twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Probiotic Combination

A commercially available probiotic mixture of Lactobacillus gasseri, Bifidobacterium bifidum, and Bifidobacterium longum will be taken as a capsule twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Group Type EXPERIMENTAL

Probiotic Combination

Intervention Type DIETARY_SUPPLEMENT

A capsule containing a mixture of Lactobacillus gasseri, Bifidobacterium bifidum, and Bifidobacterium longum (1.5 billion cells per capsule prior to expiration) will be taken twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Bifidobacterium bifidum

A commercially available probiotic strain (Bifidobacterium bifidum) will be taken as a capsule twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Group Type EXPERIMENTAL

Bifidobacterium bifidum

Intervention Type DIETARY_SUPPLEMENT

A capsule containing Bifidobacterium bifidum (1.5 billion cells per capsule prior to expiration) will be taken twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Bifidobacterium longum

A commercially available probiotic strain (Bifidobacterium longum) will be taken as a capsule twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Group Type EXPERIMENTAL

Bifidobacterium longum

Intervention Type DIETARY_SUPPLEMENT

A capsule containing Bifidobacterium bifidum (1.5 billion cells per capsule prior to expiration) will be taken twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded). Inactive ingredients include gelatin, potato starch, and silica.

Interventions

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Placebo

Placebo will be taken as a capsule twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Intervention Type DIETARY_SUPPLEMENT

Probiotic Combination

A capsule containing a mixture of Lactobacillus gasseri, Bifidobacterium bifidum, and Bifidobacterium longum (1.5 billion cells per capsule prior to expiration) will be taken twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Intervention Type DIETARY_SUPPLEMENT

Bifidobacterium bifidum

A capsule containing Bifidobacterium bifidum (1.5 billion cells per capsule prior to expiration) will be taken twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded).

Intervention Type DIETARY_SUPPLEMENT

Bifidobacterium longum

A capsule containing Bifidobacterium bifidum (1.5 billion cells per capsule prior to expiration) will be taken twice daily for 6 weeks by subjects in the group receiving this supplement (group is unknown, double-blinded). Inactive ingredients include gelatin, potato starch, and silica.

Intervention Type DIETARY_SUPPLEMENT

Other Intervention Names

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Kyo-Dophilus Lactobacillus gasseri KS-13 Bifidobacterium bifidum G9-1 Bifidobacterium longum MM-2 Kyo-Dophilus Bifidobacterium bifidum G9-1 Kyo-Dophilus Bifidobacterium longum MM-2

Eligibility Criteria

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Inclusion Criteria

* At least 18 years of age
* Healthy full-time undergraduate student at the University of Florida
* Willing and able to consume a daily supplement (probiotic or placebo) for the duration of the 6-week study
* Willing and able to complete daily questionnaires online regarding general health and well-being, including stress levels and gastrointestinal symptoms (Note: we will recruit participants who will have Internet access for the duration of the protocol, but understand that, once enrolled, situations may change. If this is the case, paper copies of the online forms will be provided)
* Willing to discontinue any immune-enhancing dietary supplements (e.g., prebiotics and fiber supplements, probiotics, Echinacea, fish oil, vitamin E \[\>400% of the RDA or \>60 mg/day\])
* Had a cold/flu within the past year

Exclusion Criteria

* Currently smoke
* Women who are lactating, know that they are pregnant, or are attempting to get pregnant
* Currently taking any systemic corticosteroids
* Currently being treated for any physician-diagnosed diseases
* Have received chemotherapy or other immune suppressing therapy within the last year
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Wakunaga Pharmaceutical Co., Ltd.

INDUSTRY

Sponsor Role collaborator

University of Florida

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Bobbi Langkamp-Henken, PhD, RD

Role: PRINCIPAL_INVESTIGATOR

University of Florida

Locations

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University of Florida

Gainesville, Florida, United States

Site Status

Countries

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United States

Other Identifiers

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IRB201600917

Identifier Type: -

Identifier Source: org_study_id

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