Status:
RECRUITING
The Effect of the Menstrual Cycle on Immune Cell Activity and Recovery After Resistance Exercise
Lead Sponsor:
University of Central Florida
Conditions:
Healthy Women
Menstruation
Eligibility:
FEMALE
18-40 years
Brief Summary
The goal of this observational study is to learn how the menstrual cycle affects immune cell activation, recruitment, and recovery responses after resistance exercise in healthy, resistance-trained wo...
Eligibility Criteria
Inclusion
- Women between the ages of 18 and 40.
- Must weigh at least 110 pounds.
- Healthy as determined by medical history, physical activity readiness, and menstrual cycle questionnaires.
- Actively resistance training for at least 6 months (minimum of 3 resistance training sessions per week, with at least one lower body session).
- Pre-menopausal and have a regular menstrual cycle (eumenorrheic), with a clear start of menses (early follicular phase).
- Not currently pregnant or planning to become pregnant during the study.
- Have not used hormonal birth control or intrauterine devices in the past 3 months (or three full menstrual cycles).
- Able to recall approximate start dates of their last 6 menstrual cycles.
- Willing to follow study instructions, including avoiding exercise, alcohol, and caffeine before testing visits.
- Free from previous or current lower body injuries that could limit performance.
- Not regularly taking any medications that could interfere with the study.
- Determined to have a high likelihood of successful blood draws by a certified phlebotomist.
Exclusion
- Do not give consent to participate.
- Have been determined unfit to participate based on medical or activity history (using health questionnaires).
- Currently take prescription or over-the-counter medication that could affect the study results.
- Have a chronic illness requiring medical care.
- Not currently resistance-trained (don't meet the exercise requirement).
- Pregnant or planning to become pregnant during the study.
- Do not have regular periods or have been diagnosed as amenorrhoeic (absence of menstruation).
- Currently taking any performance-enhancing drugs.
- Currently using hormonal birth control or intrauterine devices (IUDs), or have used them in the past three months (or three full menstrual cycles).
- Determined unlikely to have a successful blood draw by a trained phlebotomist.
- Weigh less than 110 pounds.
Key Trial Info
Start Date :
August 16 2024
Trial Type :
OBSERVATIONAL
Allocation :
ESTIMATED
End Date :
May 1 2025
Estimated Enrollment :
40 Patients enrolled
Trial Details
Trial ID
NCT06985420
Start Date
August 16 2024
End Date
May 1 2025
Last Update
May 22 2025
Active Locations (1)
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1
University of Central Florida
Orlando, Florida, United States, 32816