The active knee extension test and Slump test in subjects with perceived hamstring tightness

Subjects with perceived hamstring tightness did not appear to have reduced hamstring extensibility when compared to the available normative data. Only 7.1% of subjects reported thoracic symptoms during the Slump test, compared to other reports of thoracic symptoms in approximately 50% of asymptomatic subjects. The high prevalence of posterior lower extremity symptoms induced by the Slump test amongst asymptomatic subjects, which are relieved by cervical extension, suggests that neural structures may contribute to perceived hamstring tightness and the sensation of discomfort produced during hamstring stretches.