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Inside the elite Athlete's body: hormones and brain chemicals measured during All-Out rowing

NCT ID NCT07661953

Knowledge-focused Sponsor: Poznan University of Physical Education Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Sep 18, 2026 · Updated 1 time

Summary

This observational study looks at how the body's stress, hormone, and nervous systems respond to a maximal 6,000-meter rowing test in highly trained male athletes. Researchers measure blood levels of cortisol, testosterone, dopamine, serotonin, and GABA, along with heart rate and blood pressure, before exercise, right after, and during recovery. The goal is to understand how these systems work together and recover after extreme effort.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this could help design better training and recovery programs for athletes by revealing how the body's systems respond to extreme exercise.
What could go wrong
This is a small observational study in elite male rowers only, so findings may not apply to other athletes or the general population. It does not test a treatment.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

15 people

The number who actually took part.

Started

Jun 2024

Finished

Mar 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Participants were recruited from the Polish National Rowing Team training at the Olympic Preparation Centre (COS OPO) in Wałcz, Poland.

Ages

19 to 24 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Highly trained rowers competing at the national or international level * Regular participation in structured rowing training * Current sports medical clearance for maximal exercise testing * Ability to complete a maximal 6,000-m rowing ergometer test * Written informed consent to participate in the study Exclusion Criteria: * Acute illness, infection, or injury before testing * Diagnosed cardiovascular, metabolic, neurological, endocrine, or inflammatory disorder * Use of medications or supplements that could affect cardiovascular, endocrine, metabolic, or neurochemical responses * Inability to complete the maximal 6,000-m rowing ergometer test * Inability or refusal to provide blood samples * Non-compliance with study procedures or pre-test instructions

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Healhty

Contacts and locations

Locations

  • Poznań University of Physical Education

    Poznan, Poznań, 61-871, Poland

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