Hamstring muscle kinematics and activation during overground sprinting

Background Muscle strains are one of the most common complaints treated by physicians. High-force lengthening contractions can produce very high forces resulting in pain and tissue damage; such strains are the most common cause of muscle injuries. The hamstring muscles are particularly susceptible as they cross two joints and regularly perform lengthening contractions during running. We describe a patient with return to full function after a large hamstring tear. Case Description We report the case of a 26-year-old man who presented 1 year after a noncontact, left-sided proximal hamstring tear incurred while sprinting. He received no medical treatment or formal rehabilitation. He was able to return to all sports and activities 1 to 2 months after injury, but noted a persistent deformity of the proximal thigh, which led him to seek evaluation. Physical examination, MRI functional tests, and specific muscle tests 1 year after his injury documented a major hamstring tear at the musculotendinous junction with muscle retraction, but no avulsion of the proximal tendon attachment. Literature Review Surgery often is recommended for major proximal hamstring tendon tears, especially when more than one tendon of origin is ruptured from the ischial tuberosity. Myotendinous tears are treated nonoperatively, but may be associated with decreased strength, prolonged recovery, and recurrence. Purpose and Clinical Relevance We describe the case of a young man who sustained a hamstring tear, with retraction, at the proximal myotendinous junction, where the biceps femoris and semitendinosus arise from the conjoint tendon. He achieved full functional recovery without medical attention, but had a persistent cosmetic deformity and slight hamstring tightness. This case suggests a benign natural history for this injury and the appropriateness of noninvasive treatment.

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“…during sprinting correlated with the point of maximum hamstring muscle contraction and lengthening [40,45].…”

Section: Introductionmentioning

confidence: 90%

Evaluation and Imaging of an Untreated Grade III Hamstring Tear: A Case Report

Clark

Henn

Lovering

2011

Clinical Orthopaedics &Amp; Related Research

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“…Estudos demonstram uma alta incidência de lesões dos músculos isquiotibiais em esportes que envolvem ações do ciclo alongamento-encurtamento, como corridas de alta intensidade, acelerações e paradas bruscas, rápidas trocas de direção e chute tal qual é o caso do rúgbi 41,42 . As maiores diferenças térmicas foram observadas do lado esquerdo, na face posterior do corpo.…”

Section: Variáveisunclassified

A termografia no apoio ao diagnostico de lesao muscular no esporte

Bandeira

Neves

Moura

et al. 2014

Rev Bras Med Esporte

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Correspondência:Eduardo Borba Neves. Rua Marquês do Paraná 418, apto 104, Água Verde.80620-210 -Curitiba, PR, Brasil. RESUMOIntrodução: O rúgbi é um dos esportes que mais ocasionam lesões. A lesão muscular apresenta uma variação térmica localizada, provocando um acréscimo da temperatura local que supostamente pode ser avaliado por meio da mensuração da temperatura. Objetivo: O objetivo deste estudo foi analisar a correlação entre a variação de temperatura da pele em diversos sítios corporais e a variação da CK, em dois momentos do ciclo de atividades dos atletas profissionais de rúgbi, para, dessa forma, avaliar a utilização da termografia como método de apoio ao diagnóstico de lesões musculares. Métodos: Participaram deste estudo, 21 atletas de rúgbi do sexo masculino com idade entre 19 e 31 anos, de um clube profissional de nível nacional. Foram realizadas coletas de sangue para avaliar a concentração sérica de CK e a aquisição da imagem infravermelha dos atletas (48 h pós-treino e 48 h pós-jogo) para avaliação da temperatura da pele nos músculos de interesse. Foram realizadas imagens do tronco e das coxas, nas incidências anterior e posterior. A análise dos termogramas foi realizada de forma sistemática. Resultados: Não houve correlação entre a variação da CK e a variação de temperatura média das áreas dos músculos selecionados. Entretanto, no grupo de atletas que apresentaram elevação da CK superior a 50% entre o primeiro e o segundo momento de avaliação, os músculos peitoral esquerdo e semitendíneo esquerdo apresentaram diferenças significativas com valor de p de 0,037 e 0,045, respectivamente. Conclusões: Pode-se concluir que a termografia pode ser utilizada como método de apoio ao diagnóstico de lesão muscular em atletas.

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“…Information about what the muscles, joint segments and the whole body are doing during a particular movement is fundamentally important to the practitioner. A profile of which muscles are active during particular sequences of movement can prove very beneficial in sports performance and injury prevention (Yu et al, 2008). This desire by researchers to have a multi-channel device for the analysis of sporting movements indicates that they believe it will be of benefit during testing to have multiple sensors on one device but the results show that not all sensors were desired.…”

Section: Nature and Use Of Sensorsmentioning

confidence: 99%

“…A deep understanding about the inner workings of these algorithms is necessary before they can be applied to data. These techniques can be very useful in the area of sports biomechanics for recognising patterns in sports performance and possibly predicting injuries (Yu et al, 2008). Results could then be used to help with rehabilitation after injury or for technique improvements and prevention steps prior to injury occurring.…”

Section: Emg Specific Findingsmentioning

confidence: 99%

“…Using sensor devices, it is possible to gather information on muscle fatigue, performance, rehabilitation and injury prevention by analysing the EMG signal (Ditroilo et al, 2011;Nummela, Rusko, & Mero, 1994;Paul & Wood, 2002). The analysis of specific muscles can be extremely useful in prevention of injury (Yu et al, 2008). Identifying when the muscles are most active during a movement can provide insights on why in certain sports, specific muscles are prone to injury (Kumar, 2001;De Luca, 1997).…”

Section: Introductionmentioning

confidence: 99%

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A survey of sensor devices: use in sports biomechanics

Howard

Conway

Harrison

2016

Sports Biomechanics

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This paper examines the use of sensor devices in sports biomechanics, focusing on current frequency of use of Electromyography (EMG) device preferences. Researchers in the International Society of Biomechanics in Sports (ISBS) were invited to participate in an online survey. Responses on multiple sensor devices highlighting frequency of use, device features and improvements researchers sought in acquisition and analysis methods were obtained via an online questionnaire. Results of the investigation showed that the force platform is the most frequently used device, with inertial measurement units and EMG devices growing in popularity. Wireless functionality and ease of use for both the participant and the practitioner proved to be important features. The main findings of the survey demonstrated need for a simple, low power, multi-channel device which incorporates the various sensors into one single device. Biomechanists showed they were looking for more availability of wireless sensor devices with acquisition and analysis features. The study found there is a need to develop software analysis tools to accompany the multi-channel device, providing all the basic functions while maintaining compatibility with existing systems.

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Hamstring muscle kinematics and activation during overground sprinting

Cited by 177 publications

References 29 publications

Evaluation and Imaging of an Untreated Grade III Hamstring Tear: A Case Report

Evaluation and Imaging of an Untreated Grade III Hamstring Tear: A Case Report

A termografia no apoio ao diagnostico de lesao muscular no esporte

A survey of sensor devices: use in sports biomechanics

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