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Christopher Michael Brogden, Lewis Gough, and Adam Kelly

Hamstring strain injuries (HSIs) are the most common noncontact injury in adult 1 and adolescent soccer populations 2 with incidence rates ranging from 12% to 37%. 3 , 4 This in turn has had a resultant effect on player availability for match play, which has been associated with a negative

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Ryan G. Timmins, Baubak Shamim, Paul J. Tofari, Jack T. Hickey, and Donny M. Camera

Hamstring strain injuries (HSIs) are the most prevalent, noncontact injury in sports, which involve high-speed running, with more than 80% of these occurring within the biceps femoris long head (BFlh). 1 These injuries also present a significant financial burden for the athlete and their sporting

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Siobhán O’Connor, Noel McCaffrey, Enda F. Whyte, Michael Fop, Brendan Murphy, and Kieran A. Moran

footballers have been shown to cover a mean distance of 5732 (1047) m and 8160 (1482) m during a match, respectively. 4 , 5 Elite players spend approximately a quarter of a match running and sprinting. 5 Hamstring injuries are a leading cause of injury in adolescent and collegiate Gaelic games, accounting

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Toshiaki Soga, Taspol Keerasomboon, Kei Akiyama, and Norikazu Hirose

Hamstring injury commonly occurs during many sports activities. For instance, many of acute muscle injuries during the Rio Olympic Games were hamstring injuries. 1 Furthermore, the recurrence rate of hamstring injuries is high (>50%). 2 Therefore, prevention of the initial hamstring injury and

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Benjamin Drury, Thomas Green, Rodrigo Ramirez-Campillo, and Jason Moran

hamstring strength via performing the Nordic hamstring exercise (NHE). Its inclusion as an injury prevention exercise is supported due to its ability to greatly reduce hamstring injuries. 6 For example, in elite soccer players, high levels of eccentric hamstring strength have been shown to reduce the risk

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Nicolas Babault, Wacef Bazine, Gaëlle Deley, Christos Paizis, and Grégory Lattier


To examine the acute effect of a single static-stretching session of hamstring muscles on torque production in relation with individual flexibility.


Maximal voluntary concentric torque of hamstring muscles was measured before and after a static-stretching session (6 × 30 s). Torque changes were correlated with the flexibility level determined at the onset of the experimental procedure.


The hamstring-stretching intervention significantly reduced maximal concentric torque in participants with low and high hamstring flexibility. Hamstring flexibility and torque decrease, determined immediately after the stretching procedure, were negatively correlated.


Torque decrease measured after the static-stretching session is dependent on participant flexibility. Participants with low flexibility are much more likely to demonstrate large torque decreases poststretching.

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Özlem Aslan, Elif Balevi Batur, and Jale Meray

-extremity, which occur during the daily life activities, such as stair climbing in, stool climbing, and/or chair sitting. For instance, eccentric hamstring contraction with concentric quadriceps contraction occurs during leg extension. Conversely, concentric hamstring contraction with eccentric quadriceps

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Irfan A. Khan and Kelley Henderson

, as well as prevent performance declines. A reduction in hamstring flexibility has been associated with altered performance, manifesting as reduced sprinting speed, agility, vertical jump height, and kicking power. 3 It has also been associated with numerous conditions that cause significant

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Mathieu Lacome, Simon Avrillon, Yannick Cholley, Ben M. Simpson, Gael Guilhem, and Martin Buchheit

Over the past 10 years, total sprint distance (∼35%) and the number of sprints (∼85%) have moderately-to-largely increased in the English Premier League, suggesting the increased stress placed on the posterior chain muscle groups. 1 Together with this increased neuromuscular demand, the hamstring

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Jeffrey G. Williams, Hannah I. Gard, Jeana M. Gregory, Amy Gibson, and Jennifer Austin

In college soccer, 53% of injuries are muscular in nature. 1 Of all muscular injuries, 47% of strains involve the hamstring muscle group, 2 making hamstring injuries the most common injuries among soccer players. 1 , 3 Such findings of hamstring injury among this population are likely due to the