Influence of the Menstrual Cycle on the Maximal Strength of the External and Internal Rotators of the Shoulder in High-level Sports Women.

NCT07256483 | Completed

• 1 other identifier: 2025-A01018-41
• Study Type: interventional
• Target: 16
• Locations: 1 country
• Sites: 1

Brief 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. 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

Outcome Measures

Primary Outcomes (1)

• 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.

  baseline and 15 days

Study Arms (2)

follicular phase

EXPERIMENTAL

Measures during the follicular phase from D0 to D5

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)

Other: Measure the strength of the external and internal rotator muscles of both shoulders.

Interventions

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.

early luteal phase; follicular phase

Eligibility Criteria

• Age: 18 Years+
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Montpellier Hérault Rugby player
• Regular menstrual cycle
• Adult who has received informed consent information about the study and signed the non-objection form

You may not qualify if:

• 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.

Sponsors & Collaborators

• Clinique Saint Jean, France: lead

Study Sites (1)

Clinique St jean sud de france

Montpellier, 34430, France

Location

MeSH Terms

Conditions

Shoulder Injuries

Condition Hierarchy (Ancestors)

Wounds and Injuries

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: NON RANDOMIZED
• Masking: NONE
• Purpose: BASIC SCIENCE
• Intervention Model: CROSSOVER
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: November 20, 2025
• First Posted: December 1, 2025
• Study Start: September 1, 2025
• Primary Completion: February 15, 2026
• Study Completion: February 15, 2026
• Last Updated: February 20, 2026

Record last verified: 2025-08

Data Sharing

• IPD Sharing: Will not share

Locations

FR (1)