Protein Requirements in Endurance-trained Athlete

NCT ID: NCT02478801

Last Updated: 2016-06-16

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

EARLY_PHASE1

Total Enrollment

9 participants

Study Classification

INTERVENTIONAL

Study Start Date

2015-03-31

Study Completion Date

2016-05-31

Brief Summary

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Protein requirements in individuals who participate in endurance-based exercise training have been suggested to be greater than the current recommended dietary allowance (RDA).

Nutritional requirements for dietary amino acids in adults have traditionally been determined utilizing the nitrogen balance technique, which is prone to underestimating protein requirements. As a result, there is a need to re-evaluate recommendations in order to characterize how dietary amino acid needs may be modulated by physical activity.

Recent studies using the minimally invasive indicator amino acid oxidation (IAAO) technique have suggested that protein requirements in young men are at least 50% higher than RDA based on nitrogen balance data.

Therefore, the purpose of this study is to measure the protein requirement in endurance trained adults using the IAAO technique.

Detailed Description

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Conditions

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Increased Metabolic Requirement Healthy

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

NONE

Study Groups

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Endurance trained

subjects will receive different levels of amino acids intakes varying from 0.2 to 2.8 g/kg/day.

Group Type EXPERIMENTAL

amino acids intake

Intervention Type DIETARY_SUPPLEMENT

amino acids intakes will be varied at 0.2-2.8 g/kg/day

Interventions

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amino acids intake

amino acids intakes will be varied at 0.2-2.8 g/kg/day

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Healthy, male, endurance-trained participants who regularly more than 40 km/week
* Ability to perform the exercise stimulus (20 km run) on metabolic trial.

Exclusion Criteria

* Inability to meet health and physical activity guidelines according to the physical activity readiness questionnaire (PAR-Q+)
* Inability to adhere to any of the protocol guidelines (i.e. alcohol, caffeine consumption)
* Regular tobacco use
* Illicit drug use
Minimum Eligible Age

18 Years

Maximum Eligible Age

35 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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Ajinomoto Co., Inc.

INDUSTRY

Sponsor Role collaborator

University of Toronto

OTHER

Sponsor Role lead

Responsible Party

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Daniel Moore

Assistant Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

References

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Kato H, Suzuki K, Bannai M, Moore DR. Protein Requirements Are Elevated in Endurance Athletes after Exercise as Determined by the Indicator Amino Acid Oxidation Method. PLoS One. 2016 Jun 20;11(6):e0157406. doi: 10.1371/journal.pone.0157406. eCollection 2016.

Reference Type DERIVED
PMID: 27322029 (View on PubMed)

Other Identifiers

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IAAO-E

Identifier Type: -

Identifier Source: org_study_id

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