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Hamstring Strain

Pavlos E Evangelidis, Garry J Massey, Richard A Ferguson, Patrick C Wheeler, Matthew T G Pain, Jonathan P Folland
Hamstrings muscle fiber composition may be predominantly fast-twitch and could explain the high incidence of hamstrings strain injuries. However, hamstrings muscle composition in vivo, and its influence on knee flexor muscle function, remains unknown. We investigated biceps femoris long head (BFlh) myosin heavy chain (MHC) composition from biopsy samples, and the association of hamstrings composition and hamstrings muscle volume (using MRI) with knee flexor maximal and explosive strength. Thirty-one young men performed maximal (concentric, eccentric, isometric) and explosive (isometric) contractions...
October 13, 2016: Scandinavian Journal of Medicine & Science in Sports
Joseph D Lamplot, Matthew J Matava
Quadriceps and hamstring injuries occur frequently in football and are generally treated conservatively. While return to competition following hamstring strains is relatively quick, a high rate of injury recurrence highlights the importance of targeted rehabilitation and conditioning. This review describes the clinical manifestations of thigh-related soft-tissue injuries seen in football players. Two of these-muscle strains and contusions-are relatively common, while a third condition-the Morel-Lavallée lesion-is a rare, yet relevant injury...
September 2016: American Journal of Orthopedics
Stéphane Nouveau
OBJECTIVE: The goal of this study was to assess ACL grafts compliance (equal inverse of stiffness) after surgery (D-1, 30, 90, 180, 1Y). MATERIAL/PATIENTS AND METHODS: Fifty-three patients (15F, 38M) were tested with GNRB laximeter (Genourob company, France) during 1 year. We analysed the slope of the curves during the first year of ligamentisation (It's a more objective parameter than just the laxity at one force): operated side/healthy side (O/H). It was the same surgeon and the same surgery (hamstrings tendon transplant) for all patients...
September 2016: Annals of Physical and Rehabilitation Medicine
Robert Csapo, Ramona Folie, Simona Hosp, Michael Hasler, Werner Nachbauer
OBJECTIVES: This study aimed to investigate temperature-related changes in different neuro-muscular parameters, to elucidate the reasons for the increased likeliness of injuries of the anterior cruciate ligament under cold environmental conditions. DESIGN: Repeated measures study design. METHODS: To induce peripheral cooling of the knee joint and thigh muscles, ten healthy, female subjects underwent 30 min of exposure to a cold environment...
July 18, 2016: Physical Therapy in Sport
Timothy F Tyler, Brandon M Schmitt, Stephen J Nicholas, Malachy McHugh
CONTEXT: Hamstring strain injuries have a high recurrence rate. OBJECTIVE: To determine if a protocol emphasizing eccentric strength training with the hamstrings in a lengthened position resulted in a low recurrence rate. DESIGN: Longitudinal cohort study Setting: Sports medicine physical therapy clinic. PARTICIPANTS: 50 athletes with hamstring strain injury (age 36±16 yo; 30 men, 20 women; 3 G1, 43 G2, 4 G3; 25 recurrent injuries) followed a 3-phase rehabilitation protocol emphasizing eccentric strengthening with the hamstrings in a lengthened position...
August 24, 2016: Journal of Sport Rehabilitation
Paul Comfort, Amy Regan, Lee Herrington, Chris Thomas, John McMahon, Paul Jones
CONTEXT: Regular performance (~2 x week) of Nordic curls has been shown to increase hamstring strength and reduce the risk of hamstring strain injury, although no consensus on ankle position has been provided. OBJECTIVE: The aim of this study was to compare the effects of performing Nordic curls, with the ankle in a dorsiflexed (DF) or plantar flexed (PF) position, on muscle activity of the biceps femoris (BF) and medial gastrocnemius (MG). PARTICIPANTS: Fifteen (age 22...
August 24, 2016: Journal of Sport Rehabilitation
Ian B Shadle, Paul A Cacolice
No abstract text is available yet for this article.
August 24, 2016: Journal of Sport Rehabilitation
Y Kubo, K Nakazato, K Koyama, Y Tahara, A Funaki, K Hiranuma
The aim of this study was to investigate the injuries in Japanese collegiate sepak takraw players. We primarily focused on hamstring strain injury (HSI), and investigated the associated physical characteristics. The study included 77 Japanese collegiate sepak takraw players who were interviewed; data were collected regarding injuries sustained by them during the game within the past year. The hip range of motion (ROM) was measured. The total number of injuries was 48 in a year. The rate of HSI was the highest (31...
September 14, 2016: International Journal of Sports Medicine
S O'Connor, N McCaffrey, E F Whyte, K A Moran
Despite the popularity of collegiate Gaelic football in Ireland and the recent expansion into the United Kingdom and United States, no previous study has examined injury incidence. A prospective epidemiological study was implemented to establish injury incidence in 217 (19.3 ± 1.9 years) male collegiate Gaelic footballers from two collegiate institutions in one season. An injury was defined as any injury sustained during training or competition resulting in time lost from play or athlete reported restricted performance...
July 19, 2016: Scandinavian Journal of Medicine & Science in Sports
Kjell Svensson, Marie Alricsson, Mattias Eckerman, Theofilos Magounakis, Suzanne Werner
Injuries to the hamstring muscles are common in athletes. Track and field, Australian football, American football and soccer are examples of sports where hamstring injuries are the most common. The purpose of this study was to investigate whether there is a correlation between a hamstring injury prognosis and its characteristics of imaging parameters. The literature search was performed in the databases PubMed and CINAHL, and eleven articles were included. Seven out of the 11 articles showed a correlation between the size of the hamstring injury and length of time required before returning to sports...
June 2016: Journal of Exercise Rehabilitation
Juan Antonio Luque-Seron, Ivan Medina-Porqueres
CONTEXT: Distinct exercises have been proposed for knee rehabilitation after anterior cruciate ligament (ACL) reconstruction. There is a need to understand ACL strain behavior during different rehabilitation exercises to protect the graft from excessive strain that could interfere with its healing process. OBJECTIVE: To critically review studies that directly measured normal ACL strain in vivo during different movements, conditions, or exercises to gain insight into which of them may produce more strain on the ligament or the ligament graft in the case of reconstructed knees...
September 2016: Sports Health
Masatoshi Nakamura, Satoshi Hasegawa, Hiroki Umegaki, Satoru Nishishita, Takuya Kobayashi, Kosuke Fujita, Hiroki Tanaka, Satoko Ibuki, Noriaki Ichihashi
BACKGROUND: Hamstring muscle strain is one of the most common injuries in sports. Therefore, to investigate the factors influencing hamstring strain, the differences in passive tension applied to the hamstring muscles at the same knee and hip positions as during terminal swing phase would be useful information. In addition, passive tension applied to the hamstrings could change with anterior or posterior tilt of the pelvis. PURPOSE: The aims of this study were to investigate the difference in passive tension applied to the individual muscles composing the hamstrings during passive elongation, and to investigate the effect of pelvic position on passive tension...
August 2016: Manual Therapy
Ian B Shadle, Paul A Cacolice
Hamstring strains are a common sport-related injury, which may limit athletic performance for an extended period of time. These injuries are common in the soccer setting.1 As such, it is important to determine an appropriate prevention program to minimize the risk of such an injury for these athletes. Hamstring strains occur when external loads exceed the strength of the tissue. Development of eccentric muscle control has been shown to be an effective and inexpensive intervention to improve strength. Eccentric hamstring training then, may provide an effective and practical hamstring strain prevention strategy...
June 14, 2016: Journal of Sport Rehabilitation
Derek N Pamukoff, Sarah E Bill, Eric D Ryan, J Troy Blackburn
CONTEXT: Hamstring musculotendinous stiffness (MTS) is associated with lower-extremity injury risk (ie, hamstring strain, anterior cruciate ligament injury) and is commonly assessed using the damped oscillatory technique. However, despite a preponderance of studies that measure MTS reliably in laboratory settings, there are no valid clinical measurement tools. A valid clinical measurement technique is needed to assess MTS and permit identification of individuals at heightened risk of injury and track rehabilitation progress...
May 2016: Journal of Sport Rehabilitation
Samuel K Chu, Monica E Rho
Hamstring injuries are very common in athletes. Acute hamstring strains can occur with high-speed running or with excessive hamstring lengthening. Athletes with proximal hamstring tendinopathy often do not report a specific inciting event; instead, they develop the pathology from chronic overuse. A thorough history and physical examination is important to determine the appropriate diagnosis and rule out other causes of posterior thigh pain. Conservative management of hamstring strains involves a rehabilitation protocol that gradually increases intensity and range of motion, and progresses to sport-specific and neuromuscular control exercises...
May 2016: Current Sports Medicine Reports
Alireza Monajati, Eneko Larumbe-Zabala, Mark Goss-Sampson, Fernando Naclerio
BACKGROUND: Hamstring strain and anterior cruciate ligament injuries are, respectively, the most prevalent and serious non-contact occurring injuries in team sports. Specific biomechanical and neuromuscular variables have been used to estimate the risk of incurring a non-contact injury in athletes. OBJECTIVE: The aim of this study was to systematically review the evidences for the effectiveness of injury prevention protocols to modify biomechanical and neuromuscular anterior cruciate and/or hamstring injuries associated risk factors in uninjured team sport athletes...
2016: PloS One
Jan Wilke, Daniel Niederer, Lutz Vogt, Winfried Banzer
The skeletal muscles and the fibrous connective tissue form an extensive, body-wide network of myofascial chains. As fascia can modify its stiffness, strain transmission along these meridians is supposable. The goal of this trial therefore was to collect pilot data for potential remote effects of lower limb stretching on cervical range of motion (ROM). Twenty-six healthy participants (30 ± 6 years) were included in the matched-pairs intervention study. One group (n = 13) performed three 30 s bouts of static stretching for the gastrocnemius and the hamstrings, respectively...
April 28, 2016: Journal of Sports Sciences
Toby O Smith, Leigh Davies, Akbar de Medici, Allan Hakim, Fares Haddad, Alex Macgregor
AIM: To determine the prevalence of musculoskeletal disorders and anatomical regions which are most frequently injured in ballet dancers. METHODS: Published (AMED, CiNAHL, EMBASE, SPORTDiscus, psycINFO, MEDLINE, the Cochrane Library) and grey literature databases (OpenGrey, the WHO International Clinical Trials Registry Platform, Current Controlled Trials and the UK National Research Register Archive) were searched from their inception to 25th May 2015 for papers presenting data on injury prevalence in ballet dancers...
May 2016: Physical Therapy in Sport
Nirav Maniar, Anthony J Shield, Morgan D Williams, Ryan G Timmins, David A Opar
OBJECTIVE: To systematically review the evidence base related to hamstring strength and flexibility in previously injured hamstrings. DESIGN: Systematic review and meta-analysis. DATA SOURCES: A systematic literature search was conducted of PubMed, CINAHL, SPORTDiscus, Cochrane Library, Web of Science and EMBASE from inception to August 2015. INCLUSION CRITERIA: Full-text English articles which included studies which assessed at least one measure of hamstring strength or flexibility in men and women with prior hamstring strain injury within 24 months of the testing date...
August 2016: British Journal of Sports Medicine
Joshua T Weinhandl, Matthew C Hoch, Sebastian Y Bawab, Stacie I Ringleb
Computer modeling and simulation techniques have been increasingly used to investigate anterior cruciate ligament (ACL) loading during dynamic activities in an attempt to improve our understanding of injury mechanisms and development of injury prevention programs. However, the accuracy of many of these models remains unknown and thus the purpose of this study was to compare estimates of ACL strain from a previously developed three-dimensional, data-driven model with those obtained via in vitro measurements...
November 2016: Computer Methods in Biomechanics and Biomedical Engineering
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