Healthy Volunteers
Conditions
Interventions
Group 1: Eumenorrheic women betwenn 18 and 32 years (cycle between 26 and 32 days), no intake of hormonal contraceptiva, physically active.
Sponsors
Goethe Universität FrankfurtInstitut für Sportwissenschaften Arbeitsbereich Sportmedizin und Leistungsphysiologie
Eligibility
Sex/Gender
Female
Age
18 Years to 32 Years
Inclusion criteria
Inclusion criteria: physically active, eumenorrheic cycle between 26 and 32 days, age between 18 and 32
Exclusion criteria
Exclusion criteria: irregular menstrual cycle, intake of hormonal contraceptiva
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The aim is to show differences in qualitative and contractile properties of the m.rectus femoris in three phases of the menstrual cycle. The early follicular phase, the ovulation phase and the mid-luteal phase are evaluated, which differ in their hormone concentrations. In the early follicular phase during menstruation, hormone concentrations of both estrogen and progesterone are low. In the ovulatory phase, lutenizing hormone is initially elevated and then estrogen levels reach their maximum. During the mid-luteal phase, the progesterone concentration increases to its maximum. To a lesser extent, estrogen levels also increase. These are inferred from muscle stiffness and contractility. Muscle stiffness is determined by shear wave ultrasound and myotonometry. Contractility is examined by tensiomyography. | — |
Secondary
| Measure | Time frame |
|---|---|
| The aim is to compare force production capabilities in three different phases of the menstrual cycle. They are examined by means of an isoconetic force measurement on the dynamometer. Both the eccentric and concentric maximum force, as well as the maximum work load are determined. | — |
Countries
Germany
Contacts
Public ContactChristine Bernstein
Goethe Universität FrankfurtInstitut für Sportwissenschaften Arbeitsbereich Sportmedizin und Leistungsphysiologie
Outcome results
None listed