Journal article

Effects of menstrual-cycle hormone fluctuations on musculotendinous stiffness and knee joint laxity

E Eiling, AL Bryant, W Petersen, A Murphy, E Hohmann

KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY | SPRINGER | Published : 2007

Abstract

The high risk of anterior cruciate ligament (ACL) injuries in female athletes may be related to hormonal fluctuations resulting in an increased laxity of ligaments and muscles. This study examined changes in lower limb musculotendinous stiffness (MTS) and knee laxity over the course of the menstrual cycle and investigated the interaction of warm-up on MTS. Eleven female netball players aged 16-18 years who were not using hormonal contraceptives and demonstrated regular menstrual cycles participated in this study. Test-sessions were conducted at onset of menses, mid-follicular phase, ovulation and mid-luteal phase. ACL laxity was determined at each test-session using a KT2000 knee arthrometer..

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