“…Several injury prevention protocols including eccentric exercises such as the Nordic Curl (Gabbe, Branson, & Bennell, 2006;Petersen, Thorborg, Nielsen, Budtz-Jorgensen, & Holmich, 2011), double-leg dead lift (Holcomb, Rubley, Heather, & Guadagnoli, 2007), or leg curl using a fly wheel yo-yo machine (Askling, Karlsson, & Thorstensson, 2003) have shown to successfully attenuate the incidence of hamstring injuries (Opar, Williams, & Shield, 2012). These protective effects have been associated with some specific muscular adaptations such as increased isometric (Kilgallon, Donnelly, & Shafat, 2007) or dynamic (Mjølsnes, Arnason, Østhagen, Raastad, & Bahr, 2004) hamstring strength and a shift of the optimal knee flexion peak torque towards a more open angle position (Brughelli & Cronin, 2007;Clark, Bryant, Culgan, & Hartley, 2005).…”