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

Clinique Saint Jean, France16 enrolled

Overview

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 Type

INTERVENTIONAL

Allocation

NON_RANDOMIZED

Purpose

BASIC_SCIENCE

Masking

NONE

Enrollment

Conditions

Shoulder Injuries

Interventions

Eligibility

Sex: FEMALEMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Inclusion Criteria : * Montpellier Hérault Rugby player * Regular menstrual cycle * Adult who has received informed consent information about the study and signed the non-objection form Exclusion Criteria : * 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.

Outcomes

Primary Outcomes

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.

Time frame: baseline and 15 days