An interventional study of Repeated Wingate Exercise in Exercise and Thyroid Function, sponsored by Inonu University. Completed at 1 site in Turkey (Türkiye). Open to male participants aged 18 Years to 25 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-10-19.
Sponsored by Inonu University · Not applicable, Interventional, and Basic science
Among 20 studies in Motor Activity by Inonu University — 6 open to participants now, 8 under way, none of them phase 3. Motor Activity · Inonu University.
Among the 20 studies in Motor Activity by Inonu University, this one is the 8th largest by enrollment of the 19 interventional ones that give a count, is one of 4 that started in 2024, is one of 19 with no phase, and was the 19th registered.
9,798 studies on the registry are indexed under Motor Activity; 1,910 are open to participants now.
Browse Motor Activity studies →6 of the 20 studies in Motor Activity by Inonu University are open now, in 1 country. Recruiting first, the newest first:
Inonu University · Sites in Turkey
Ages 18+
Inonu University · Sites in Turkey
Ages 10–12 · Healthy volunteers
Inonu University · Sites in Turkey
Ages 18–60
Inonu University · Sites in Turkey
Ages 65+ · Healthy volunteers
Inonu University
Ages 18+ · Healthy volunteers
By country, each count listing its studies:
Of the 1,201 Motor Activity studies recruiting now, 517 (43%) set no upper age limit and 535 (45%) stop at 75 or younger; 180 take children under 18; 420 take healthy volunteers.
This study: 18 Years to 25 Years · male · healthy volunteers too.
The full table on the hub →This tab as a report to print or save as PDF → With an account.
20 studies; the count open now beside each. This study's row is marked.
First in 2017; this study’s year is marked. 4 started in 2024.
This study's enrollment of 40 is below the median of 60 across 8,388 interventional studies indexed under Motor Activity.
Median enrollment 40 across the 19 interventional studies, 649 across the 1 observational. Of the 12 that completed or were terminated, 0 (0%) have results posted.
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Inonu University is the lead sponsor of 394 studies on the registry; 95 are open to participants now.
1 of the studies in Motor Activity by Inonu University that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT07241728Inonu UniversityBruxism and Diadinamic Current | 2026-12-20 |
Among the 20 studies in Motor Activity by Inonu University, from their registry updates:
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This two-group, non-randomized study investigated the acute effects of repeated Wingate exercise on free thyroid hormone concentrations in male amateur soccer players. Twenty healthy male amateur soccer players completed a standardized repeated Wingate exercise protocol, and a separate group of twenty male amateur soccer players provided two morning blood samples without exercising. Blood samples were collected immediately before and immediately after the exercise session or the resting interval to determine free triiodothyronine (fT3), free thyroxine (fT4), and thyroid-stimulating hormone (TSH) concentrations. Including a non-exercising comparison group allows the observed changes to be evaluated against the change expected across a comparable interval in the absence of exercise.
High-intensity anaerobic exercise induces acute physiological and endocrine responses that contribute to metabolic regulation and athletic performance. Thyroid hormones, including free triiodothyronine (fT3) and free thyroxine (fT4), play essential roles in energy metabolism, oxygen consumption, and exercise adaptation. However, the immediate effects of repeated supramaximal exercise on thyroid hormone responses remain insufficiently understood, and most previous reports lack any non-exercising comparison condition, so observed changes cannot be separated from time of day, posture, repeated venipuncture, or routine analytical variation.
This two-group non-randomized study was designed to compare the acute effects of repeated Wingate exercise on free thyroid hormone concentrations against a non-exercising comparison group. Twenty healthy male amateur soccer players completed a standardized repeated Wingate exercise protocol under controlled laboratory conditions, consisting of six 30-second maximal bouts at 7.5% of body mass separated by 4 minutes of passive recovery. A comparison group of twenty male amateur soccer players provided two venous blood samples on one morning without performing any exercise between them. Venous blood samples were collected immediately before and immediately after the exercise session or the resting interval to determine free triiodothyronine (fT3), free thyroxine (fT4), and thyroid-stimulating hormone (TSH) concentrations. Hormone analyses were performed using standardized laboratory procedures.
The two groups were recruited and sampled in different periods rather than concurrently, and participants were therefore not randomly allocated. The primary objective was to determine whether the change in circulating free thyroid hormone concentrations around a repeated Wingate session differs from the change observed across a comparable resting interval.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Participants completed a standardized repeated Wingate exercise protocol under laboratory conditions. Blood samples were collected immediately before and immediately after the exercise session to assess acute changes in serum free triiodothyronine (fT3), free thyroxine (fT4), and thyroid-stimulating hormone (TSH).
Behavioral: Repeated Wingate Exercise
Participants provided two venous blood samples on one morning and performed no exercise between the two samples. Serum free triiodothyronine (fT3), free thyroxine (fT4), and thyroid-stimulating hormone (TSH) were measured in both samples.
Participants completed a standardized repeated Wingate exercise protocol under controlled laboratory conditions to investigate the acute effects of high-intensity anaerobic exercise on thyroid hormone responses. Venous blood samples were collected immediately before and immediately after the exercise session to measure serum free triiodothyronine (fT3), free thyroxine (fT4), and thyroid-stimulating hormone (TSH) concentrations.
Also known as: Repeated Wingate Test
Change in Serum Free Thyroid Hormone Concentrations (fT3, fT4, and TSH)
The primary outcome was the within-participant change in serum free thyroid hormone concentrations, including free triiodothyronine (fT3), free thyroxine (fT4), and thyroid-stimulating hormone (TSH), measured immediately before and immediately after the repeated Wingate exercise protocol in the exercise group and across a comparable resting interval in the comparison group. Change scores were compared between groups.
Time frame: Immediately before and immediately after the repeated Wingate exercise session or the resting interval
Plan to share: Yes — De-identified participant-level data and analysis code are available from the corresponding author on reasonable request, subject to applicable ethics, participant-consent, and institutional requirements.
Supporting information: Analytic code
Time frame: Data will be available from the date of publication, with no planned end date.
Access criteria: Requests should be directed to the corresponding author. Data will be shared with researchers who provide a methodologically sound proposal, subject to applicable ethics approval, participant-consent restrictions, and institutional requirements. A data-use agreement may be required.
No publications or documents are linked to this record.
Ran from Aug 2024 to primary completion in Aug 2024, 0 months.
Of 5,147 non-industry interventional studies with no phase under Motor Activity, half reached primary completion within 17 months of starting (the median), counting those still running; a quarter within 7 and three quarters within 36. This study's 0 months is below that.
Counting every sponsor, half of 5,207 studies reached it within 17 months; a quarter within 7 and three quarters within 36.
Since we started tracking on Sep 25, 2026, the dates moved once, on Oct 19, 2026: start Jun 2023 → Aug 2024, primary completion Jun 2023 → Aug 2024 and completion Jun 2023 → Aug 2024.
Earlier changes are on the record history on ClinicalTrials.gov ↗
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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