The effect of menstrual-cycle phase on hamstring extensibility and muscle stiffness

Journal of Sport Rehabilitation
David R BellDarin A Padua

Abstract

Preventing noncontact ACL injuries has been a major focus of athletic trainers and researchers. One factor that may influence female noncontact ACL injury is the fluctuating concentrations of hormones in the body. To determine whether muscle properties change across the menstrual cycle. Repeated measures. Testing was performed within 3 d after the onset of menses and ovulation. Repeated-measures ANOVAs were used to determine changes in variables across the menstrual cycle, and Pearson correlations were used to determine relationships between variables. 8 women with normal menstrual cycles. Active hamstring stiffness and hamstring extensibility. Hamstring extensibility (P = .003) increased at the ovulation testing session but hamstring muscle stiffness (P = .66) did not. The results indicate that hamstring muscle stiffness did not change across the menstrual cycle and hamstring extensibility increased at ovulation, when estrogen concentration increases.

Citations

Jun 23, 2011·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·David R BellDarin A Padua
Oct 25, 2013·Singapore Medical Journal·Hamid A Mohamad ShariffMohamed Ali Mohamed Razif
Oct 20, 2011·Clinical Journal of Sport Medicine : Official Journal of the Canadian Academy of Sport Medicine·David R BellDarin A Padua
Jan 11, 2014·Journal of Sports Sciences·Francisco AyalaFernando Santonja
Dec 12, 2012·Clinical Physiology and Functional Imaging·F AyalaF Santonja
Jul 8, 2015·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Said El-AshkerMark De Ste Croix
Feb 12, 2019·European Journal of Sport Science·Said El-AshkerBrian P Carson
Aug 4, 2016·PM & R : the Journal of Injury, Function, and Rehabilitation·Andrew W FroehleDana L Duren
Nov 9, 2011·Sports Medicine·Massimiliano DitroiloGiuseppe De Vito
Aug 17, 2018·Medicine and Science in Sports and Exercise·Hiroshi KumagaiNoriyuki Fuku
Aug 28, 2021·Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine·Carlos Lago-FuentesEzequiel Rey

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