The fluctuating concentrations of female sex hormones, namely estrogen and progesterone may have an effect on the ability of the tissue to withstand challenging exercise conditions, such as eccentric exercise. These sex hormones have also been purported to influence the perceived difficulty of exercise. This study aims to uncover how the different estrogen and progesterone concentrations present throughout the menstrual cycle effect perceived readiness to perform, perceptions of difficulty, and different recovery metrics.
18-35 years of age
BMI of 18.5-29.9 as a BMI below or above these cut points results in highly varied menstrual cycle lengths [15]
Not taking contraception or other types of medication that could influence reproductive status
Regular menstruation
Amenorrhea or oligomenorrhea
Perimenopausal or menopausal
Recreational or professional trail or downhill runner
On a form of contraception