Hamstring Muscles, Menstrual Cycle, Passive Stretching
Conditions
Brief summary
The aim of the work is to assess the effect of the menstrual cycle on the biomechanical properties of the muscles. The study will be conducted among young women aged 20-25 with a regular menstrual cycle. During the test, muscle strength and muscle flexibility as well as activation times will be performed. The study will assess the effect of the stretching of the hamstring muscles on the biomechanical properties of the muscles in the different phases of the menstrual cycle.
Interventions
PROCEDUREStatic stretching
Static stretching lasting 3 x 45 seconds will be performed in each of the examined women three times in different phases of the menstrual cycle: follicular, ovulatory and luteal. Before and after the intervention, a series of tests assessing the influence of stretching on biomechanical parameters will be carried out
Sponsors
Medical University of Silesia
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
20 Years to 26 Years
Healthy volunteers
Yes
Inclusion criteria
* Regular menstrual cycle lasting 28 days (+/- 5 days) * A menstrual cycle that has been present for at least 2 years * No hormonal contraception * Lack of pain in the lower spine * No restriction of mobility in the hip joint
Exclusion criteria
* Irregular menstrual cycle * BMI value below 18.5 and above 25 * Orthopedic disorders in the lower limb * Neurological disorders * Normal flexibility of the hamstring muscles
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Hamstring flexibility | Change measured before and immediately after static stretching during follicular phase of menstrual cycle | Hamstring flexibility will be assessed using AKE and PKE and SLR tests. |
| Passive Hamstring flexibility | Change measured before and immediately after static stretching during follicular phase of menstrual cycle | Hamstring flexibility will be assessed using PKE test |
| Active Hamstring flexibility | Change measured before and immediately after static stretching during follicular phase of menstrual cycle | Hamstring flexibility will be assessed using SLR tests. |
| Hamstring passive stifness | Change measured before and immediately after static stretching during follicular phase of menstrual cycle | Hamstring stiffness will be assessed using TDK test. During the test the resistance of the elongated Hamstring muscle is measured. If the resistance value is smaller after the intervention it means that muscle stiffness changed. |
| Trunk acivity is assessed using Stabilizer Pressure Biofeedback | Three repetitions with a 30-second break between. The measure is taken during follicular phase of menstrual cycle | The torso activation scheme is measured during lower and upper limb motions using Chattanooga Stabilizer Pressure Biofeedback. |
| Hamstring strength is tested using the Micro Fet Handheld Dynamometer. | Change measured before and immediately after static stretching. The measure is taken during follicular phase of menstrual cycle | Muscle strength of hamstring is tested. Three repetitions of muscle strength testing are performed with two 30-second intervals. The participants are asked to press against the Dynamometer with the maximum effort for 5-7 seconds. |
| Strength of arm flexors and extensors and hip flexors is tested using the Micro Fet Handheld Dynamometer. | Three repetitions for 5-7 seconds with two 30-second intervals . The measure is taken during follicular phase of menstrual cycle | Muscle strength of arm flexors and extensors and hip flexors is tested. Three repetitions of muscle strength testing are performed with two 30-second intervals. The participants are asked to press against the Dynamometer with the maximum effort for 5-7 seconds. |
Countries
Poland
Contacts
Primary ContactPiotr Michalik
Backup ContactTomasz Michalski
Outcome results
None listed