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Morning vs. evening workouts: does your clock change your blood?

NCT ID NCT07825740

Knowledge-focused Sponsor: Firat University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 17, 2026 · Last updated Sep 18, 2026 · Updated 1 time

Summary

Researchers want to know if exercising in the morning or evening changes physical performance and blood markers in healthy young male soccer players. Eight participants complete the same jump and shuttle-run tests twice, once in the morning and once in the evening, with a four-day gap between sessions. Blood samples taken before, right after, and two hours after exercise measure hormones and muscle enzymes. The study asks whether the body's response to exercise shifts with the time of day.

What this could mean

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

Active substance
a standardized acute exercise protocol of vertical jumps and a Yo-Yo shuttle run
What this could lead to
If timing matters, this could help athletes and coaches pick the best time of day to train or compete. It may also inform how doctors interpret blood tests after exercise.
What could go wrong
The study is very small, with only eight participants, so the results may not apply to other people or sports. Blood markers can vary for many reasons beyond time of day, and the findings may not hold up in larger groups.

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

8 people

The number who actually took part.

Started

Nov 2025

Finished

Jan 2026

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 25 years

Sex

Male 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.

* Healthy male soccer players. * Age between 18 and 25 years. * Regular participation in organized soccer training. * Free from musculoskeletal injury during the previous 6 months. * Able and willing to provide written informed consent.

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Conditions

The condition(s) this trial relates to.

circadian rhythm sleep disorder Motor Activity

As listed by the trial registrant

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

Circadian rhythm Exercise Physical performance

Contacts and locations

Locations

  • MUNZUR University

    Tunceli, 62100, Turkey (Türkiye)

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