Clinical Research Directory

Inclusion Criteria: * Adult females who met the following inclusion criteria were participated in the study: * Normal (not suffering from any orthopedic, neurological, cardiopulmonary or gynecological disorders). * Single. * Aging between 18 and 30 years. * 28-days menstrual cycle. Exclusion Criteria: * Subjects were excluded for any of the following reasons: * Serious knee injury at the time of the testing. * History of previous surgeries or traumas in lower limbs. * Concurrent injuries in the lower limbs and trunk. * Subjects with history of disturbed menstrual cycle or endocrinal deficits. * Subjects taking drugs or medications that may affect normal female menstrual cycle or sex hormones.