Shoulder InjuriesNCT07256483
Influence of the Menstrual Cycle on the Maximal Strength of the External and Internal Rotators of the Shoulder in High-level Sports Women.
A study testing Measure the strength of the external and internal rotator muscles of both shoulders. in people with Shoulder Injuries, run by Clinique Saint Jean, France at 1 site in France.
Trial summary
The goal of this prospective interventional study is to measure the strength of the external and internal rotator muscles of both shoulders (dominant and non-dominant) of Montpellier Hérault Rugby players at different stages of their menstrual cycle. Read more about this study
- Who is it for?
- Ages 18 years and older, women onlyHealthy volunteers can take part
- Conditions the study is for
- Shoulder Injuries
- What is being tested?
- Measure the strength of the external and internal rotator muscles of both shoulders.
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 16 participants
- Where
- 1 siteFrance
- Study dates
- 1 Sep 2025to 15 Feb 2026
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- Women only
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Montpellier Hérault Rugby player
- Regular menstrual cycle
- Adult who has received informed consent information about the study and signed the non-objection form
Who cannot join
- Use or intake of contraception
- Presence of a condition associated with the menstrual cycle
- Recent injury or pain in the upper limbs lasting more than two weeks, incompatible with performing a test of maximum voluntary contraction of the shoulder rotators
- Presence of an infectious disease (fever) that could skew temperature readings during menstrual cycle monitoring.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Influence of the Menstrual Cycle on the Maximal Strength of the External and Internal Rotators of the Shoulder in High-level Sports Women From Montpellier Hérault Rugby.
The goal of this prospective interventional study is to measure the strength of the external and internal rotator muscles of both shoulders (dominant and non-dominant) of Montpellier Hérault Rugby players at different stages of their menstrual cycle. During the menstrual phase (beginning of the follicular phase from D0 to D5) and during the ovulatory/early luteal phase (approximately D13 to D18 of the menstrual cycle). The study is conducted on volunteers.
The main question it aims to answer is : Is there an effect of the menstrual cycle on the maximum strength of the internal and external rotators of the shoulder in female athletes who play rugby?
- Conditions
- Shoulder Injuries
- Being tested
- Measure the strength of the external and internal rotator muscles of both shoulders.
- Medical subject headings
- Shoulder Injuries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Measure the strength of the external and internal rotator muscles of both shoulders.Other
Measure the strength of the external and internal rotator muscles of both shoulders using a Cybex-type isokinetic dynamometer.
| Study group | Role | What they receive |
|---|---|---|
| follicular phase | Experimental | Measures during the follicular phase from D0 to D5 Receives: Other: Measure the strength of the external and internal rotator muscles of both shoulders. |
| early luteal phase | Active comparator | Measures during the ovulatory/early luteal phase (approximately days 13 to 18 of the menstrual cycle) Receives: Other: Measure the strength of the external and internal rotator muscles of both shoulders. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Intra-individual correlation of isokinetic torque peaks
The intra-individual correlation of isokinetic torque peaks (in Nm) measured at two distinct phases of the menstrual cycle (D0-D5 and D13-D18), for each type of internal and external rotator contraction, and for each arm.
Measured: baseline and 15 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Dec 2025
- Study start1 Sep 2025
- Primary completion15 Feb 2026
- Study completion15 Feb 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Shoulder InjuriesStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Non-randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 16 participants (actual)
Sponsor and investigators
- Lead sponsor
- Clinique Saint Jean, France
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07256483
- Sponsor's protocol ID
- 2025-A01018-41
- Status last verified
- Aug 2025
- First submitted
- 20 Nov 2025
- Last updated
- 20 Feb 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 Feb 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Influence of the Menstrual Cycle on the Maximal Strength of the External and Internal Rotators of the Shoulder in High-level Sports Women From Montpellier Hérault Rugby.
- ClinicalTrials.gov ID
- NCT07256483
- Acronym / sponsor ID
- 2025-A01018-41
- Conditions
- Shoulder Injuries
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 16 participants (actual)
- Lead sponsor
- Clinique Saint Jean, FranceUniversity, hospital or other
- Study start
- 1 Sep 2025 (actual)
- Primary completion
- 15 Feb 2026 (actual)
- Study completion
- 15 Feb 2026 (actual)
- First posted
- 1 Dec 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The goal of this prospective interventional study is to measure the strength of the external and internal rotator muscles of both shoulders (dominant and non-dominant) of Montpellier Hérault Rugby players at different stages of their menstrual cycle. During the menstrual phase (beginning of the follicular phase from D0 to D5) and during the ovulatory/early luteal phase (approximately D13 to D18 of the menstrual cycle). The study is conducted on volunteers.
The main question it aims to answer is : Is there an effect of the menstrual cycle on the maximum strength of the internal and external rotators of the shoulder in female athletes who play rugby?
Study design
- Primary purpose
- Basic science
- Allocation
- Non-randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| follicular phase | Experimental | Other: Measure the strength of the external and internal rotator muscles of both shoulders.Measures during the follicular phase from D0 to D5 |
| early luteal phase | Active comparator | Other: Measure the strength of the external and internal rotator muscles of both shoulders.Measures during the ovulatory/early luteal phase (approximately days 13 to 18 of the menstrual cycle) |
Who may qualify
- Ages
- 18 years and older
- Sex
- Female only
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (3 listed)
- Montpellier Hérault Rugby player
- Regular menstrual cycle
- Adult who has received informed consent information about the study and signed the non-objection form
Key exclusion criteria (4 listed)
- Use or intake of contraception
- Presence of a condition associated with the menstrual cycle
- Recent injury or pain in the upper limbs lasting more than two weeks, incompatible with performing a test of maximum voluntary contraction of the shoulder rotators
- Presence of an infectious disease (fever) that could skew temperature readings during menstrual cycle monitoring.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Measure the strength of the external and internal rotator muscles of both shoulders.Measure the strength of the external and internal rotator muscles of both shoulders using a Cybex-type isokinetic dynamometer. | Other | early luteal phase, follicular phase |
Primary outcome
Intra-individual correlation of isokinetic torque peaks
Time frame: baseline and 15 days
The intra-individual correlation of isokinetic torque peaks (in Nm) measured at two distinct phases of the menstrual cycle (D0-D5 and D13-D18), for each type of internal and external rotator contraction, and for each arm.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 Feb 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Measure the strength of the external and internal rotator muscles of both shoulders. in people with Shoulder Injuries, run by Clinique Saint Jean, France at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 20 Feb 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Intra-individual correlation of isokinetic torque peaks (time frame: baseline and 15 days). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Feb 2026.