557 results match your criteria Hamstring Strain

The role of pre-season health characteristics as injury risk factors in female adolescent soccer players.

J Phys Ther Sci 2021 May 15;33(5):439-443. Epub 2021 May 15.

Department of Physical Therapy, Crean College of Health & Behavioral Sciences, Rinker Health Science Campus in Irvine, Chapman University: 9401 Jeronimo Rd, Irvine, CA 92618, USA.

[Purpose] Determine if female adolescent soccer players with a history of concussion, impaired K-D scores, and pre-season subjective complaints of neck pain, dizziness, and headache were predisposed to additional risk of musculoskeletal or concussive injury during 10-weeks of competitive play. [Participants and Methods] Twenty-three female high school soccer athletes provided concussion history and reported pre-season subjective complaints. K-D testing was performed pre and postseason. Read More

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Reliability of a Clinical Test for Measuring Eccentric Knee Flexor Strength Using a Handheld Dynamometer.

J Sport Rehabil 2021 May 23:1-5. Epub 2021 May 23.

Context: Eccentric knee flexor strength assessments have a key role in both prevention and rehabilitation of hamstring strain injuries.

Objective: To verify the reliability of a clinical test for measuring eccentric knee flexor strength during the Nordic hamstring exercise using a commercially available handheld dynamometer.

Design: Reliability study. Read More

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Optimal duration of stretching of the hamstring muscle group in older adults: a randomized controlled trial.

Eur J Phys Rehabil Med 2021 May 18. Epub 2021 May 18.

University of Scranton, Scranton, PA, USA.

Aim: To explore the effect of variable stretching intervals on neural function and ROM.

Design: Double blind randomized controlled trial.

Setting: University research laboratory. Read More

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Hamstring and gluteal activation during high-speed overground running: Impact of prior strain injury.

J Sports Sci 2021 May 5:1-7. Epub 2021 May 5.

School of Exercise and Nutrition Science, Faculty of Health, Queensland University of Technology, Brisbane, Australia.

This study examined the spatial patterns of hamstring and gluteal muscle activation during high-speed overground running in limbs with and without aprior hamstring strain injury. Ten active males with arecent (<18 month) unilateral biceps femoris long head (BFLH) strain injury underwent functional magnetic resonance imaging before and immediately after arepeat-sprint running protocol. Transverse relaxation (T2) time, an index of muscle activation, of the BFLH and short head (BFSH), semitendinosus (ST), semimembranosus (SM), gluteus maximus (GMAX) and medius (GMED) was assessed pre-post exercise. Read More

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Is Pre-season Eccentric Strength Testing During the Nordic Hamstring Exercise Associated with Future Hamstring Strain Injury? A Systematic Review and Meta-analysis.

Sports Med 2021 Apr 29. Epub 2021 Apr 29.

School of Behavioural and Health Sciences, Australian Catholic University, Fitzroy, VIC, Australia.

Background: Interventions utilising the Nordic hamstring exercise (NHE) have resulted in reductions in the incidence of hamstring strain injury (HSI). Subsequently, quantifying eccentric knee flexor strength during performance of the NHE to identify an association with the occurrence of future HSI has become increasingly common; however, the data to date are equivocal.

Objective: To systematically review the association between pre-season eccentric knee flexor strength quantified during performance of the NHE and the occurrence of future HSI. Read More

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Impact, incidence and prevalence of musculoskeletal injuries in senior amateur male rugby: epidemiological study.

Phys Sportsmed 2021 May 18:1-7. Epub 2021 May 18.

Department of Physical Therapy and Sport Medicine, Club Universitario De Córdoba, Córdoba, Argentina.

: Exposure to different types of injuries in rugby union is common. It is important to know about the injury epidemiology for medical teams care in order to optimize players´ performance and the treatment of common injuries, but there is limited specific information related to amateur rugby union. The purpose of this study is to determine the incidence, prevalence, injury burden, severity, nature of injuries sustained by senior amateur male rugby players from three clubs in Argentina during a given season. Read More

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Hamstring and Quadriceps Muscle Strength in Youth to Senior Elite Soccer: A Cross-Sectional Study Including 125 Players.

Int J Sports Physiol Perform 2021 Apr 22:1-7. Epub 2021 Apr 22.

Purpose: Increasing age, high quadriceps strength, and low hamstring muscle strength are associated with hamstring strain injury in soccer. The authors investigated the age-related variation in maximal hamstring and quadriceps strength in male elite soccer players from under-13 (U-13) to the senior level.

Methods: A total of 125 elite soccer players were included from a Danish professional soccer club and associated youth academy (first tier; U-13, n = 19; U-14, n = 16; U-15, n = 19; U-17, n = 24; U-19, n = 17; and senior, n = 30). Read More

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Site-specific features of active muscle stiffness and proximal aponeurosis strain in biceps femoris long head.

Scand J Med Sci Sports 2021 Apr 16. Epub 2021 Apr 16.

Graduate School of Engineering and Science, Shibaura Institute of Technology, Saitama, Japan.

Limited information is available on site-specific features of muscle stiffness and aponeurosis strain of the biceps femoris long head (BFlh) during contractions. Therefore, understanding of the mechanics and etiology of hamstring strain injuries remains difficult. As a first step to gain further insight into them, the present study aimed to identify whether active muscle stiffness and proximal aponeurosis strain during contractions are varied along the long axis of the BFlh. Read More

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Biceps Femoris Compensates for Semitendinosus After Anterior Cruciate Ligament Reconstruction With a Hamstring Autograft: A Muscle Functional Magnetic Resonance Imaging Study in Male Soccer Players.

Am J Sports Med 2021 05 16;49(6):1470-1481. Epub 2021 Apr 16.

Department of Rehabilitation Sciences, Ghent University, Faculty of Medicine and Health Sciences, Ghent, Belgium.

Background: Rates of reinjury, return to play (RTP) at the preinjury level, and hamstring strain injuries in male soccer players after anterior cruciate ligament reconstruction (ACLR) remain unsatisfactory, due to multifactorial causes. Recent insights on intramuscular hamstring coordination revealed the semitendinosus (ST) to be of crucial importance for hamstring functioning, especially during heavy eccentric hamstring loading. Scientific evidence on the consequences of ST tendon harvest for ACLR is scarce and inconsistent. Read More

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The Myotendinous Junction-A Vulnerable Companion in Sports. A Narrative Review.

Front Physiol 2021 26;12:635561. Epub 2021 Mar 26.

Section of Sports Traumatology, M51, A Part of IOC Research Center, Bispebjerg and Frederiksberg Hospital, Copenhagen University Hospital, Copenhagen, Denmark.

The incidence of strain injuries continues to be high in many popular sports, especially hamstring strain injuries in football, despite a documented important effect of eccentric exercise to prevent strains. Studies investigating the anatomical properties of these injuries in humans are sparse. The majority of strains are seen at the interface between muscle fibers and tendon: the myotendinous junction (MTJ). Read More

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A comparison of ground reaction force waveforms and step length between recreational endurance runners with hamstring injuries and healthy controls.

Clin Biomech (Bristol, Avon) 2021 Apr 23;84:105334. Epub 2021 Mar 23.

Spaulding National Running Center, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Boston, MA, USA.

Background: Acute hamstring injuries during sprinting have been attributed, in part, to the ground reaction forces experienced during early stance. However, no studies have investigated the factors associated with overuse hamstring injuries in endurance runners. Our purpose was to compare early stance ground reaction forces and step length between runners with overuse hamstring injuries and healthy controls. Read More

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A ninety-minute football match increases hamstring flexibility in professional players.

J Biol Regul Homeost Agents 2020 Sep-Oct;34(5 Suppl. 1):87-92. IORS Special Issue on Orthopedics

Centre for Sports and Exercise Medicine, Queen Mary, University of London, UK.

Flexibility is an integral component in any conditioning program. Flexibility has been defined as the ability of a muscle to lengthen and allow one or more joints in a kinetic chain to move through a range of motion. The lack of flexibility of the hamstring muscle group has been associated with a higher risk of non-contact muscle injury, and for several other conditions, such as changes in lumbopelvic rhythm, greater thoracic kyphosis and lumbar flexion, and lower back pain. Read More

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Development of a Novel Nordic Hamstring Exercise Device to Measure and Modify the Knee Flexors' Torque-Length Relationship.

Front Sports Act Living 2021 24;3:629606. Epub 2021 Feb 24.

Sports Engineering Research Group (SERG), Advanced Wellbeing Research Centre (AWRC), Sheffield Hallam University, Sheffield, United Kingdom.

The Nordic hamstring exercise (NHE) has been shown to reduce hamstring injury risk when employed in training programs. This study investigates a novel device to modify the NHE torque-length relationship of the knee flexors, as targeting the hamstrings at a more extended length may have benefits for hamstring strain injury prevention and rehabilitation. Eighteen recreational male participants completed three bilateral NHE repetitions at a conventional 0° flat position, a 10° incline, and a 10° decline slope on a novel device (HAHAM°). Read More

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February 2021

Rehabilitation of Soft Tissue Injuries of the Hip and Pelvis.

Clin Sports Med 2021 Apr 10;40(2):409-428. Epub 2021 Feb 10.

Atlanta Braves, Truist Park, 755 Battery Avenue, Southeast, Atlanta, GA 30339, USA.

The athlete's hip is complex when it comes to the surrounding musculature-approximately 21 different muscles can cross the hip and pelvis region, all synchronously working to maintain pelvic stability and functional hip activities. Commonly injured muscle groups for high-level athletes include flexors, adductors, abductors, and/or proximal hamstring musculotendinous complex. These muscle groups work in harmony; however, each has an independent function and propensity for injury. Read More

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Proximal Hamstring Injuries.

Clin Sports Med 2021 Apr 10;40(2):339-361. Epub 2021 Feb 10.

Department of Orthopaedic Surgery, Duke University Medical Center, Duke Sports Science Institute, 3475 Erwin Road, Durham, NC 27705, USA. Electronic address:

Proximal hamstring injuries can present as chronic tendinosis, acute strain, partial tendinous avulsions, or complete 3-tendon rupture. Nonoperative management for chronic insertional tendinosis and low-grade tears includes activity modification, anti-inflammatories, and physical therapy. Platelet-rich plasma injections, corticosteroid injections, dry needling, and shock wave therapy are newer therapies that also may provide benefit. Read More

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Evidence-Based Prevention of Sports Injuries: Is the Sports Medicine Community on the Right Track?

J Orthop Sports Phys Ther 2021 03;51(3):91-93

Sports injuries are multifactorial and have a complex web of risk factors. Thus, identifying risk factors plays a central role in designing prevention strategies. Following evidence-based practice principles, clinicians use the best available evidence to guide decisions about injury prevention. Read More

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The burden of injury in field hockey: A secondary analysis of prospective cohort data.

Scand J Med Sci Sports 2021 Apr 13;31(4):884-893. Epub 2020 Dec 13.

School of Public Health, Physiotherapy and Sport Science, University College Dublin, Dublin, Ireland.

Most studies report injuries based upon their incidence rate, or the number of injuries which occur in a sport per unit of time. While this is recommended across numerous consensus statements on reporting injury data in sport, it may be of benefit to consider injury burden also. Reporting injuries as the duration of injury per 1000 exposure hours highlights those injuries which will likely cause greater disruption within a team. Read More

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Hamstring Injury Prevention for Elite Soccer Players: A Real-World Prevention Program Showing the Effect of Players' Compliance on the Outcome.

J Strength Cond Res 2020 Feb 14. Epub 2020 Feb 14.

1Aspetar Orthopedic and Sports Medicine Hospital, Doha, Qatar; 2Gabbett Performance Solutions, Brisbane, Queensland, Australia; and 3University of Southern Queensland, Institute for Resilient Regions, Ipswich, Queensland, Australia.

Chebbi, S, Chamari, K, Van Dyk, N, Gabbett, T, and Tabben, M. Hamstring injury prevention for elite soccer players: A real-world prevention program showing the effect of players' compliance on the outcome. J Strength Cond Res XX(X): 000-000, 2020-The aim of this study was to determine the effect of implementing the Nordic hamstring exercise (NHE) to prevent hamstring injuries in soccer. Read More

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February 2020

2019 Marathon of Rome. Hamstring injuries in long distance runners: influence of age, gender, weight, height, numbers of marathon and impact profile.

J Sports Med Phys Fitness 2021 Feb 15. Epub 2021 Feb 15.

Department of Orthopaedic and Trauma Surgery, Campus Bio-Medico University, Rome, Italy.

Background: Hamstring diseases are one of the most widespread diseases in athletes, especially in runners, sprinters, and endurance athletes. Notwithstanding the importance of the problem, risk factors are still marginally known. This transversal study analyzes the correlation between Hamstring tendinopathy and hamstring strains and age, gender, weight, height, number of marathons, and impact profile in athletes who took part in the 2019 Rome Marathon. Read More

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February 2021

Injuries in Collegiate Track and Field Jumping: A 2-Year Prospective Surveillance Study.

Orthop J Sports Med 2021 Jan 25;9(1):2325967120973397. Epub 2021 Jan 25.

Graduate School of Health and Sport Sciences, Chukyo University, Aichi, Japan.

Background: Athletes participating in track and field jumping events (long jump, triple jump, high jump, and pole vault) are exposed to ground-reaction forces on the takeoff leg that are several times their body weight. This can cause injuries specific to such activities.

Purpose: To determine the incidence of injuries in collegiate jumpers using the guidelines set forth by a 2014 consensus statement on injury surveillance during track and field events. Read More

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January 2021

Eccentric Strength Assessment of Hamstring Muscles with New Technologies: a Systematic Review of Current Methods and Clinical Implications.

Sports Med Open 2021 Jan 28;7(1):10. Epub 2021 Jan 28.

School of Physical Education and Sport - Laboratory of Biomechanics, Universidade de São Paulo, Av. Prof. Mello de Morais, 65 - Cidade Universitária, São Paulo, São Paulo, 05508-030, Brazil.

Background: Given the severe economic and performance implications of hamstring injuries, there are different attempts to identify their risk factors for subsequently developing injury prevention strategies to reduce the risk of these injuries. One of the strategies reported in the scientific literature is the application of interventions with eccentric exercises. To verify the effectiveness of these interventions, different eccentric strength measurements have been used with low-cost devices as alternatives to the widespread used isokinetic dynamometers and the technically limited handheld dynamometers. Read More

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January 2021

Swing Phase Mechanics of Maximal Velocity Sprints-Does Isokinetic Lower-Limb Muscle Strength Matter?

Int J Sports Physiol Perform 2021 Jan 13:1-11. Epub 2021 Jan 13.

Purpose: Concentric hip and eccentric knee joint mechanics affect sprint performance. Although the biarticular hamstrings combine these capacities, empirical links between swing phase mechanics and corresponding isokinetic outcome parameters are deficient. This explorative study aimed (1) to explain the variance of sprint velocity, (2) to compare maximal sprints with isokinetic tests, (3) to associate swing phase mechanics with isokinetic parameters, and (4) to quantify the relation between knee and hip joint swing phase mechanics. Read More

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January 2021

Does Muscle-Tendon Unit Structure Predispose to Hamstring Strain Injury During Running? A Critical Review.

Sports Med 2021 Feb 24;51(2):215-224. Epub 2020 Dec 24.

Centre for Exercise and Sports Science Research (CESSR), School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia.

Hamstring strain injury (HSI) remains the most common muscle injury in high-intensity running in humans. The majority of acute HSI occur specifically within the proximal region of the long head of biceps femoris and there is a sustained interest among researchers in understanding the factors that predispose to HSI. The present critical review describes the current understanding of biceps femoris long head (BFlh) structural features that might influence strain injury risk. Read More

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February 2021


Int J Sports Phys Ther 2020 Aug;15(4):579-592

Oklahoma State University Center for Health Sciences, Department of Athletic Training, School of Allied Health, 1111 W. 17 Street, Tulsa, OK 74107.

Background: Myofascial decompression (MFD), or cupping, and self-myofascial release (SMR) are common techniques utilized to treat soft tissue injuries and increase flexibility. MFD is a negative pressure soft tissue treatment technique using suction to manipulate the skin and underlying soft tissues. One method of SMR is a foam roller, where a patient rolls his/her bodyweight over a dense foam cylinder in a self-massaging fashion to mobilize soft tissues for the body part treated. Read More

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Int J Sports Phys Ther 2020 Aug;15(4):571-578

Federal University of Health Sciences of Porto Alegre, Porto Alegre, RS, Brazil.

Background: The Nordic hamstring exercise (NHE) is an effective strategy to prevent hamstring strain injuries in soccer players. The current literature recommends a 10-week training program with three sessions per week, but the short preseason period and the congested schedule make difficult for high-performance soccer teams to apply the NHE as recommended.

Purpose: The purpose of this study was to examine the effect of a pragmatic NHE training program during a four-week preseason period on eccentric knee flexor strength of high-performance soccer players. Read More

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Int J Sports Phys Ther 2020 Dec;15(6):947-957

Sports Orthopedic Research Center - Copenhagen (SORC-C), Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Denmark.

Background: Hamstring strain injuries are common in many sports. Following a hamstring injury, deficits in peak and explosive strength may persist after return to sport potentially affecting sprint performance. Assessment of repeated-sprint ability is recognized as an important part of the return to sport evaluation after a hamstring injury. Read More

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December 2020

Sprinting and hamstring strain injury: Beliefs and practices of professional physical performance coaches in Australian football.

Phys Ther Sport 2021 Mar 11;48:12-19. Epub 2020 Dec 11.

School of Science, Psychology and Sport, Federation University Australia, Ballarat, Australia.

Objectives: The purpose of this study was to establish beliefs and practices of physical performance coaches regarding sprinting and Hamstring Strain Injury (HSI) in Australian Rules football.

Designs: Delphi-validated questionnaire.

Setting: Online. Read More

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Concentric and eccentric isokinetic hamstring injury risk among 582 professional elite soccer players: a 10-years retrospective cohort study.

BMJ Open Sport Exerc Med 2020 23;6(1):e000868. Epub 2020 Nov 23.

Physical Therapy Department, Universidade Cidade de Sao Paulo, Sao Paulo, SP, Brazil.

Background/aim: Different authors have tried to correlate the peak isokinetic torque values with the incidence of soccer match injuries. However, due to the wide variety of assessment testing protocols, such an inference becomes difficult. This study aimed to verify the capacity of an isokinetic test to establish injury risk reference values for hamstring strain injuries. Read More

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November 2020