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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04564300
Other study ID # OC-R
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date October 19, 2020
Est. completion date September 27, 2023

Study information

Verified date May 2024
Source University of Aarhus
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

There is still no one who has studied how oral contraceptive use affects recovery in trained women after repeated high-intensity workouts. Consequently, a well-controlled study is needed. The project is designed as a controlled cohort study, where 20 oral contraceptive users will be compared with 20 non-users. After initial preliminary examination and habituation to the test procedures, the subjects will start the intervention in week 2 of their menstrual cycle / active contraceptive pill cycle. Before and 3h, 24h and 48h after 3 intense strength training sessions performed 2 days in a row, blood samples will be taken, muscle soreness measured and performance tests performed. The day before the first training session and over the 4 trial days, the subjects will receive a standardized diet.


Recruitment information / eligibility

Status Completed
Enrollment 40
Est. completion date September 27, 2023
Est. primary completion date September 27, 2022
Accepts healthy volunteers Accepts Healthy Volunteers
Gender Female
Age group 18 Years to 30 Years
Eligibility Inclusion Criteria: - BMI 18.5-30 - Regular training minimum. 4 times a week (1= times strength training, 1= times endurance training / interval training or interval-based sports. If the interest in participation is greater than necessary, we will prioritize people who perform strength training at least twice a week) Exclusion Criteria: - Irregular menstruation over the last 6 months (shorter than 24 days or longer than 35 days cycle) - Used birth control pills for less than 6 months - Non-birth control pill users must not have used birth control pills, IUDs, birth control pills, or mini- pills for a maximum of 1 month during the last 6 months and not within the last 3 months up to the trial. . - Injuries / pain in the lower body, which prevents participation in intense strength training - Medication consumption that may affect protein metabolism and inflammatory parameters. - Diabetes - Smoking - Unstable weight / major weight loss (weight fluctuations of more than 5 kg in the last six months) - Eating disorder - Pregnancy - Cannot read or understand Danish

Study Design


Related Conditions & MeSH terms


Intervention

Procedure:
Training
Both groups will perform a standardized training protocol

Locations

Country Name City State
Denmark Aarhus University, Department for Public Health, Section for Sport Science Aarhus

Sponsors (1)

Lead Sponsor Collaborator
University of Aarhus

Country where clinical trial is conducted

Denmark, 

Outcome

Type Measure Description Time frame Safety issue
Primary Changes in maximal knee extensor strength and Rate of force development Measured in a Humac Norm dynamometer Before, 3 hours , 24 hours and 48 hours after training
Secondary Changes in Jumping performance Jump height Before, 3 hours , 24 hours and 48 hours after training.
Secondary Changes in Jumping performance Power Before, 3 hours , 24 hours and 48 hours after training.
Secondary Changes in Jumping performance modified reactive strength index Before, 3 hours , 24 hours and 48 hours after training.
Secondary Changes in Jumping performance leg stiffness Before, 3 hours , 24 hours and 48 hours after training.
Secondary Changes in Wingate performance Peak power and average power Before, 3 hours , 24 hours and 48 hours after training.
Secondary Changes in Yoyo-intermittent recovery 1 performance total length covered in the yo-yo test Before, and 48 hours after training.
Secondary Changes in Leg press performance Total reps performed at 80% of 1RM Before, 3 hours , 24 hours and 48 hours after training.
Secondary Changes training volume total volume performed during training (i.e set x reps x working weight) Before, 3 hours , 24 hours and 48 hours after training.
Secondary Differences in knee laxity Measured with a Lachmeter Baseline
Secondary Changes in muscle soreness (VAS-score) Subjects will raise and sit on a chair and immediately after answer a VAS-score (100mm line, from worst pain ever, to no pain at all.) Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage estradiol Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage testosterone Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage sex hormone-binding globulin Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage progesterone Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage follicle-stimulating hormone Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage luteinizing hormone Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage Creatine kinase Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage Lactate dehydrogenase Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage Myoglobin Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage Cortisol Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage C-reactive protein Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage tumor necrosis factor Before, 3 hours , 24 hours and 48 hours after training
Secondary Blood analysis: Sex hormones, cortisol, inflammatory markers and markers of muscle damage IL-6 Before, 3 hours , 24 hours and 48 hours after training
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