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As female participation in athletics increase, the effects of the menstrual cycle phases are being brought to the surface level. The changing concentrations of estrogen and progesterone help determine the four phases of the menstrual cycle. The purpose of this study was to determine the effects of the menstrual cycle phases on muscular strength and endurance in female swimmers. The hypothesis was that the menstrual cycle will affect performance differently. With an increase in estrogen there will be increased performance while with an increase in progesterone there will be a decrease in performance. 20 female swimmers from various travel swim teams participated. Completed Counter-movement vertical jump test (CMJ) to measure muscle strength and Yo-Yo intermittent endurance test (Yo-Yo IET) to measure muscle endurance.

Publication Date

Spring 2022


Boiling Springs, NC


Medicine and Health Sciences | Movement and Mind-Body Therapies | Rehabilitation and Therapy | Sports Sciences

The Effects of Menstrual Cycle Phases on Muscular Strength and Endurance in Female Swimmers