NCT04885010

Brief Summary

Overloading is a key training principle used by athletes and coaches to improve physical performance. Intensified training periods are therefore commonly incorporated into the course of a regular training season. From a clinical point of view, very intense periods of training are associated with a temporary immunological deficiency which can lead to teh "overreaching syndroms". During periods of overreaching, nutritional strategies are mainly aimed at ensuring sufficient amounts of energy to support the increase in effort. However less is known about nutritional supplements to attenuated the inflammatory/immunological response to training stress. Probiotic bacteria are defined as live food ingredients beneficial to the host's health. Numerous health benefits have been attributed to probiotics, including effects on gastrointestinal tract function and disease, immune function, hyperlipidemia, hypertension, and allergic conditions. Studies in the literature on the ergogenic effect of probiotics in athletes are still scarce today. this study aims to explore the potential role of probiotics on performance, recovery from fatigue and immune function during intensive period of training.

Trial Health

35
At Risk

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Trial has exceeded expected completion date
Enrollment
16

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Jun 2021

Shorter than P25 for not_applicable

Status
unknown

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

May 7, 2021

Completed
6 days until next milestone

First Posted

Study publicly available on registry

May 13, 2021

Completed
19 days until next milestone

Study Start

First participant enrolled

June 1, 2021

Completed
4 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

September 30, 2021

Completed
3 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2021

Completed
Last Updated

May 13, 2021

Status Verified

May 1, 2021

Enrollment Period

4 months

First QC Date

May 7, 2021

Last Update Submit

May 7, 2021

Conditions

Outcome Measures

Primary Outcomes (3)

  • lymphocyte subpopulation total T (CD3+)

    lymphocyte subpopulation: total T (CD3+) %

    Change from baseline to up to 15 days

  • T-helper (CD4+)

    lymphocyte subpopulation: T-helper (CD4+) %

    Change from baseline to up to 15 days

  • T-suppressor (CD8+)

    lymphocyte subpopulation: T-suppressor (CD8+) %

    Change from baseline to up to 15 days

Study Arms (2)

Probiotics

EXPERIMENTAL

participants will train for 15 days while consuming the dietary supplement. During the last 8 days the intensity of training will increase to induce overreaching.

Dietary Supplement: probiotics

Placebo

PLACEBO COMPARATOR

participants will train for 15 days while consuming the dietary supplement. During the last 8 days the intensity of training will increase to induce overreaching.

Dietary Supplement: placebo

Interventions

probioticsDIETARY_SUPPLEMENT

participants will be given probiotics twice a day for 15 days

Probiotics
placeboDIETARY_SUPPLEMENT

participants will be given a placebo twice a day for 15 days

Placebo

Eligibility Criteria

Age18 Years - 35 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • age 25-55 years
  • Body mass index:\> 18 and \<30 kg / m2
  • Stable body weight for at least 3 months
  • regular practice of physical activity for at least 2 years

You may not qualify if:

  • Chronic diseases (cardiovascular, hepatic, respiratory, cancer)
  • Acute inflammatory states, infections or other pathologies
  • Regular use of probiotics
  • Use or treatment with steroids (within the previous 3 months)

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Conditions

Fatigue

Interventions

Probiotics

Condition Hierarchy (Ancestors)

Signs and SymptomsPathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Dietary SupplementsFoodDiet, Food, and NutritionPhysiological PhenomenaFood and Beverages

Central Study Contacts

Tatiana Moro, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

May 7, 2021

First Posted

May 13, 2021

Study Start

June 1, 2021

Primary Completion

September 30, 2021

Study Completion

December 31, 2021

Last Updated

May 13, 2021

Record last verified: 2021-05

Data Sharing

IPD Sharing
Will not share