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Sprint vs. run: how two workouts move thyroid and stress hormones

NCT ID NCT07823335

Knowledge-focused Sponsor: Assoc. Prof. Dr. Özgür EKEN Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 16, 2026 · Last updated Sep 17, 2026 · Updated 1 time

Summary

Researchers compare how aerobic and anaerobic exercise change thyroid hormones and cortisol in sedentary women aged 18 to 25. Participants complete a 20-meter shuttle run and a 30-second Wingate cycling test on separate days. Blood samples taken before and after each session measure TSH, T3, T4, and cortisol. The study asks whether the two exercise types produce different acute hormone responses.

What this could mean

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

Active substance
aerobic shuttle run and anaerobic cycling exercise
What this could lead to
If the two exercise types shift hormones differently, this could help explain how workouts affect metabolism and stress, and inform exercise advice for sedentary people.
What could go wrong
This is a small, short study of 30 young women at one university, so the hormone changes may not reflect what happens in other groups or with long-term training.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 30 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

Sep 2026

An estimate. Start dates often move.

Expected to finish

Sep 2026

An estimate. End dates often move.

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.

Ages

18 to 24 years

Sex

Female participants only

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: * Female participants aged 18-25 years * Studying at the Faculty of Sports Sciences of Yalova University * Not actively participating in regular exercise or sports training * Voluntarily agreeing to participate in the study * Providing written informed consent * Being medically eligible to perform the exercise protocols following preparticipation medical screening Exclusion Criteria: * Having a neurological disorder during the previous year * Having an auditory, visual, or vestibular disorder during the previous year * Having experienced a serious upper- or lower-extremity injury during the previous six months * Having any medical condition identified during screening that could prevent safe participation in maximal exercise testing * Being unable or unwilling to complete either exercise protocol or blood-sampling procedures

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Conditions

The condition(s) this trial relates to.

Sedentary Behavior

As listed by the trial registrant

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

Acute exercise Endocrine response Sedentary behavior

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Karabuk University, Hasan Dogan Faculty of Sport Sciences

    RECRUITING

    Karabük, Karabük Province, 78050, Turkey (Türkiye)

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