Editing Hamstring (section)

===Sports running injuries===
A common running injury in several sports, excessive stretch of a hamstring results from extensive [[hip flexion]] while the knee is extended.<ref name=daniel/><ref name="Kenn">{{cite journal | last1=Kenneally-Dabrowski | first1=Claire J. B. | last2=Brown | first2=Nicholas A. T. | last3=Lai | first3=Adrian K. M. | last4=Perriman | first4=Diana | last5=Spratford | first5=Wayne | last6=Serpell | first6=Benjamin G. | title=Late swing or early stance? A narrative review of hamstring injury mechanisms during high-speed running | journal=Scandinavian Journal of Medicine and Science in Sports | volume=29 | issue=8 | date=2019-05-22 | issn=0905-7188 | pmid=31033024 | doi=10.1111/sms.13437 | pages=1083–1091| s2cid=139106410 }}</ref> During [[sprinting]], a hamstring injury may occur from excessive muscle strain during [[eccentric contraction]] late in the leg swing phase.<ref name=daniel/><ref name=Kenn/> The overall incidence of a hamstring injury in sports and professional dancers is about two per 1000 hours of performance.<ref name=daniel/> In some sports, a hamstring injury occurs at the incidence of 19% of all sports injuries, and results in an average time loss from competition of 24  days.<ref name=daniel/>