Muscle Anabolic Response to β2-adrenergic Stimulation With Increased Amino Acid Availability.

NCT ID: NCT06654986

Last Updated: 2025-04-09

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

RECRUITING

Clinical Phase

NA

Total Enrollment

36 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-31

Study Completion Date

2026-12-18

Brief Summary

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The purpose of the project is to investigate the effect of amino acid availability on the muscle anabolic response to beta2-adrenergic stimulation in young healthy men and women.

Detailed Description

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Conditions

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Healthy

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Thirty-six healthy, well-trained men and women will be randomized into three distinct groups, each receiving one of the following interventions: 1) salmeterol with amino acid availability, 2) salmeterol, or 3) a placebo, administered twice daily over a 6-week intervention period. This design aims to elucidate the impact of amino acid availability on the muscle anabolic response to beta2-adrenergic stimulation.
Primary Study Purpose

BASIC_SCIENCE

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Salmeterol + amino acid availability

The participants will be administered salmeterol from an inhaler device and amino acid availability (protein powder in a shaker) daily during a 6-week intervention.

Group Type EXPERIMENTAL

Salmeterol + amino acid availability

Intervention Type DRUG

The participants will be administered 200 µg salmeterol (8 puffs) from a MDI device and 40 g amino acid availability (clear whey in a shaker with water) daily during a 6-week intervention. Participants will be instructed to provide documentation of both the inhalation and the shaker intake via video.

Salmeterol + placebo

The participants will be administered salmeterol from an inhaler device. Furthermore they will be administered placebo (carbo fuel in a shaker) daily during a 6-week intervention.

Group Type EXPERIMENTAL

No interventions assigned to this group

Placebo + placebo

The participants will be administered placebo from an inhaler device. Furthermore they will be administered placebo (carbo fuel in a shaker) daily during a 6-week intervention.

Group Type PLACEBO_COMPARATOR

Placebo + placebo

Intervention Type DRUG

The participants will be administered placebo (8 puffs) from a MDI device. Furthermore they will be administered 80 g placebo (carbo fuel in a shaker with water) daily during a 6-week intervention. Participants will be instructed to provide documentation of both the inhalation and the shaker intake via video.

Interventions

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Salmeterol + amino acid availability

The participants will be administered 200 µg salmeterol (8 puffs) from a MDI device and 40 g amino acid availability (clear whey in a shaker with water) daily during a 6-week intervention. Participants will be instructed to provide documentation of both the inhalation and the shaker intake via video.

Intervention Type DRUG

Salmeterol + placebo

The participants will be administered 200 µg salmeterol (8 puffs) from a MDI device. Furthermore they will be administered 80 g placebo (carbo fuel in a shaker with water) daily during a 6-week intervention. Participants will be instructed to provide documentation of both the inhalation and the shaker intake via video.

Intervention Type DRUG

Placebo + placebo

The participants will be administered placebo (8 puffs) from a MDI device. Furthermore they will be administered 80 g placebo (carbo fuel in a shaker with water) daily during a 6-week intervention. Participants will be instructed to provide documentation of both the inhalation and the shaker intake via video.

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Age 18-40
* Physically active \>5 hours a week
* Maximum oxygen uptake classified as high or very high

Exclusion Criteria

* Active smoker currently or within the past 5 years
* Regular intake of medication deemed by the responsible study physician to affect the test parameters (hormonal contraception is accepted for women)
* Chronic or acute illness deemed by the responsible study physician to affect the test parameters
* Deviation from the study protocol
* Lean mass index \>21 kg/m²
* Pregnancy
* Smoker
* Blood donation during the past 3 months
Minimum Eligible Age

18 Years

Maximum Eligible Age

40 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Copenhagen

OTHER

Sponsor Role lead

Responsible Party

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Morten Hostrup, PhD

Associate Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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August Krogh Building

Copenhagen, , Denmark

Site Status RECRUITING

Countries

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Denmark

Facility Contacts

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Morten Hostrup, PhD

Role: primary

+4535321595

Other Identifiers

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SALM_chron

Identifier Type: -

Identifier Source: org_study_id

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