The influence of menstrual cycle phases and their hormonal profiles on qualitative and contractile properties of skeletal muscles.

Recruiting

• Conditions: Influence of the menstrual cycle on performance

• Registration Number: DRKS00032152
• Lead Sponsor: Goethe Universität Frankfurt, Institut für Sportwissenschaften

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2023-07-03
• Last Update Posted: 19 August 2024

Recruitment & Eligibility

• Status: Recruiting
• Sex: Female
• Target Recruitment: 60

Inclusion Criteria

female, between 18 and 35 years
- Taking hormonal oral contraceptives (birth control pills)
- Female, between 18 and 35 years
- Naturally menstruating women with regular menstrual cycle between 21 and 35 days
- Not taking hormonal contraceptives

Exclusion Criteria

- In EG: irregularity of the menstrual cycle such as oligomenorrhea, amenorrhea, polymenorrhea.
- Acute injuries of the lower extremities
- Body fat percentage > 30%

Study & Design

• Study Type: observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
To be able to describe changes in performance-determining parameters under the influence of hormonal fluctuations, the project aims to carry out a structural and functional diagnosis of the musculature over several menstrual cycles and to relate these to the hormone concentrations of estrogen, progesterone and testosterone. By means of several measurement points distributed over the cycle, a close-meshed examination of the muscular characteristics is to be carried out in order also to be able to record and represent short-term changes. In the present project, the m. rectus femoris is to be examined, since it has already been shown that the stiffness of the muscle varies over the cycle. Accordingly, it can be assumed that the female hormone profile and its fluctuations during a cycle influence the qualitative and functional properties of muscles and their tendency to fatigue.

Secondary Outcome Measures

Name	Time	Method
The second objective is to test the above parameters in a female population taking hormonal contraceptives with a different hormonal profile than naturally menstruating women.