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Che-Hsiu Chen, Tsun-Shun Huang, Huei-Ming Chai, Mei-Hwa Jan and Jiu-Jenq Lin

Context:

Recent studies have shown that the static stretch (SS) may adversely affect leg-muscle performance.

Objectives:

The authors examined the short-term effects of 2 stretching exercises on hamstrings muscle before and after exercise.

Design:

Crossover.

Setting:

Laboratory.

Participants:

9 healthy, physically active men.

Interventions:

There were 3 protocols in a randomized order with a 7-d interval: nonstretching (CON protocol), hamstrings static stretching (SS) with proprioceptive neuromuscular facilitation (PNF), and SS with kinesio-taping application on the hamstrings.

Main Outcome Measures:

Outcome measures included first-felt and maximum tolerant-felt range of motion (FROM and TROM), maximal knee-flexion peak torque (PT) at 180°/s, and hamstrings muscle stiffness.

Results:

Groups were not different at prestretching in terms of hamstrings flexibility, PT, and muscle stiffness. At poststretching, both stretching protocols showed significant increases in FROM and TROM (P < .05). Stiffer hamstrings muscle and decreased PT were found in both SS+PNF and CON protocols (P < .05). However, there was no significant difference in the SS+Taping protocol (P > .05).

Conclusion:

The stretching protocols improve hamstrings flexibility immediately, but after exercise hamstrings peak torque is diminished in the SS+PNF but not in the SS+Taping group. This means that SS+Taping can prevent negative results from exercise, which may prevent muscle injury.

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Justin Goins

alignments, and functional abilities essential for normal gait. 2 Decreased activation of the GM and increased activation of hamstrings have been observed clinically in patients with hamstring injuries and low back pain. 1 , 3 – 6 Overactivity of the erector spinae and hamstring muscles, along with

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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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Max Pietrzak and Niels B.J. Vollaard

Hamstring strain injury (HSI) is one of the most common noncontact injuries in athletes, 1 – 3 with high rates of recurrence, 4 despite considerable research efforts. 5 The role of hamstring flexibility, also termed extensibility herein, in HSI, 4 , 6 – 8 reinjury, and rehabilitation, 2 , 9

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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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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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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

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Gulcan Harput, Volga B. Tunay and Matthew P. Ithurburn

subsequent physical activity, several musculoskeletal impairments are observed during rehabilitation, including deficits in knee range of motion, 3 knee joint laxity, 4 and, most commonly, quadriceps and hamstring muscle weakness. 5 – 8 Often, strength recovery of the involved limb quadriceps and

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Mary Lynn Manduca and Stephen J. Straub

Clinical Scenario Muscle injuries account for 30% to 50% of all athletic injuries, 1 with hamstring strains accounting for 15%. 2 Hamstring injuries are particularly common in endurance sports, soccer, rugby, hockey, football, and track—which has been attributed to the explosive and decelerating