Den här översättningen är inte klar ännu. Den här sidan är just nu på engelska.

Gå till den engelska sidan

Cure My Disease

Don't miss your cure!

 Log in / Sign up

Timing is everything: study to reveal best time of day for female athletes based on their cycle

NCT ID NCT07399847

Knowledge-focused Sponsor: Lancaster University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at how the time of day and the menstrual cycle (specifically low vs. high progesterone phases) affect strength and thinking in female athletes. Thirty women aged 18-30 who train regularly will be tested at 7am, 12pm, and 6pm during two different phases of their cycle. The goal is to find patterns that could help personalize training and competition schedules for better performance.

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 female athletes and coaches tailor training and competition times to boost performance based on the menstrual cycle.
What could go wrong
This is a small, early-stage observational study with only 30 participants, so results may not apply to all athletes. It does not test a treatment or intervention.

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

About 30 people

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

Expected to start

Feb 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.

Who is studied

Participants will be selected from across Lancaster University (staff and students)

Ages

18 to 30 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 (assigned at birth) * Aged 18-30 years * Tier 2 athlete which requires the participants to identify with a specific sport, train with a purpose to compete, regularly train \~3 times per week and compete at a local level (for example being a member of a BUCS sport and competing regularly with that sport) * Regular menstrual cycle - considered between 21-35-day cycles with at least 9 periods a year. Exclusion Criteria: * The current/previous (in the last 3 months) use of any contraceptive method that alter the menstrual cycle * The use of the emergency contraceptive pill either 3 months prior to the study or during the study * Diagnosis of menstrual disorders including (but not exclusively) endometriosis and Polycystic Ovary Syndrome (PCOS) * A formal diagnosis of sleep disorders such as insomnia * Consume \>400mg/day of caffeine * A musculoskeletal injury in the past 3 months * A formal diagnosis of neurological or psychiatric disorders such as Attention-Deficit/Hyperactivity Disorder (ADHD), Autism Spectrum Disorder (ASD), Dyslexia or schizophrenia * Taking prescribed medication that may affect sleep for example stimulants such as Methylphenidate * No regular night shift work * No trans-meridian travel within 10 days of their expected participation dates (travel that will cause jetlag) * Have given blood in the last 12 weeks - this is not strictly an exclusion; participants will just need to wait until after 12 weeks before taking part in the study

Get updates

Get notified about this study

Sign up to get updates when this study changes or when new studies for Circadian rhythm are added.

Vår säkerhetsrekommendation!

Genom att skicka in godkänner du våra Användarvillkor

Conditions

The condition(s) this trial relates to.

circadian rhythm sleep disorder

As listed by the trial registrant

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

Circadian rhythm Eumenorrhea Executive function (cognition) Female athletes Menstrual cycle phase Strength

How to take part

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

  1. The official record

    The full official record for this study. This one lists no contact details, but it is the first place any would appear.

    Open the record ↗

  2. 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.

More trials for these conditions

Other studies related to the condition(s) this trial covers.