Effects of Sleep Restrictions on Maximal Strength, Muscle Power, and Strength Endurance in Resistance-trained Women.

Launched by UNIVERSITY SCHOOL OF PHYSICAL EDUCATION, KRAKOW, POLAND · Jan 15, 2024

Keywords

ClinConnect Summary

This study is looking at how one night of sleep restriction affects strength, power, and overall performance in resistance-trained women. In a randomized crossover design, each participant will do testing after two different sleep conditions: normal sleep and sleep restriction (3 hours less than usual), with about a week between sessions. The day after each night, they’ll complete strength and performance tests (maximal bench press, bench press endurance, explosive bench press, and a vertical jump) and answer mood and readiness questions. Researchers will also draw blood to measure hormones (progesterone and estradiol) and track sleep with wrist devices. There are no results to report yet.

To take part, you’d need to be an adult woman up to 30 years old with at least 3 years of training, who exercises at least 3 times per week and has a current sport qualification. Exclusions include menstrual-cycle problems, hormonal contraception use, irregular cycles, certain health conditions, sleep disorders, and medications or supplements that could affect the tests. The study is based at the University School of Physical Education in Krakow, Poland, and is enrolling by invitation, aiming for about 20 participants. Testing is timed to avoid certain menstrual-cycle phases and bleeding, and you’ll wear devices to monitor sleep and have blood drawn before each testing session.

Gender

FEMALE

Eligibility criteria

• Inclusion Criteria:
• • a minimum of 3 years of training experience;
• • practicing physical activity for the last 6 months at least 3 times per week for 2h
• • current medical qualification for competitive sport
• Exclusion Criteria:
• • diseases that can have a bad influence on the menstrual cycle (e.g. polycystic ovarian syndrome, endometriosis);
• • using hormonal contraception;
• • regularity of the menstrual cycle.
• • diagnosed cardiovascular, metabolic, gastrointestinal, or neurological diseases;
• • movement, neuromuscular or musculoskeletal disorders;
• • taking medications and supplements that may affect fitness test results;
• • taking supplements that may affect biochemical test results
• • sleep disorders
• • PSQI \>5