INTRODUCTION: Children with spastic cerebral palsy (CP) often develop hamstring contractures, however, the mechanism of contracture formation is not known. Contractures represent a resistance of muscle to increased length. The structural elements responsible for this increased stiffness are also not known [1]. Previous work showed that single fibers from “contractured” muscle tissue has increas...

We investigated the effect of quadriceps and hamstring muscle fatigue on anterior tibial translation and muscle reaction time in 10 healthy subjects. The six men and four women had an average age of 21.3 years and had no known pathologic knee conditions. Each patient underwent a knee examination, arthrometer measurements of tibial translation, subjective functional assessment, and an anterior t...

BACKGROUND Many injury prevention and rehabilitation programs aim to train hamstring and quadriceps co-activation to constrain excessive anterior tibial translation and protect the anterior cruciate ligament (ACL) from injury. However, despite strong clinical belief in its efficacy, primary evidence supporting training co-activation of the hamstrings and quadriceps muscles for ACL injury preven...

Background and Aims hamstring injury is the most common in football. Nordic exercise (NHE) one of best prevention strategies. This study was aims to compare effect six weeks standard NHE modified on electromyography hamstring, hip trunk muscles sprint performance young male football players Methods In this study, participants were 26 Kerman, Iran who selected using purposeful convenience sampli...

BACKGROUND The incidence of acute hamstring injuries is high in several sports, including the different forms of football. PURPOSE The authors investigated the preventive effect of eccentric strengthening of the hamstring muscles using the Nordic hamstring exercise compared with no additional hamstring exercise on the rate of acute hamstring injuries in male soccer players. STUDY DESIGN Ran...

[Purpose] This study compared the efficacy of passive and active stretching techniques on hamstring flexibility. [Subjects] Fifty-four healthy young subjects were randomly assigned to one of three groups (2 treatment groups and 1 control group). [Methods] Subjects in the passive stretching group had their knees extended by an examiner while lying supine 90° of hip flexion. In the same position,...

Objectives: After autograft hamstring harvesting for anterior cruciate ligament reconstruction (ACLR) there are several studies of semitendinosus (ST) and gracilis (G) tendon showing variation in muscle/tendon regeneration, muscle atrophy myotendinous retraction. There remains a gap our knowledge on the extent function more than decade after harvest. is paucity long-term morphology following AC...

Introduction: The slump test is used in athletes with suspected hamstring strains to determine the presence of neural mechanosensitivity. Other than cadaveric investigations, limited evidence exists regarding this test with respect to the neuromuscular system. Aim: To examine the effect of the slump test on local muscular and neural structures in the posterior thigh in athletes with hamstring i...