A 10‐week randomized trial comparing eccentric vs. concentric hamstring strength training in well‐trained soccer players

Mjølsnes, Roald; Árnason, Árni; Østhagen, Tor; Raastad, Truls; Bahr, Roald

doi:10.1046/j.1600-0838.2003.367.x

Cited by 387 publications

(487 citation statements)

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“…4 An etiologic risk factor commonly attributed to the high incidence of thigh strain injuries is poor eccentric muscular strength. 5,6 The temporal pattern of injury during match play also indicates that fatigue might be a factor. 2 In English professional soccer players, 47% of match-play hamstrings strains were incurred during the final 15 minutes of each half.…”

Section: Key Pointsmentioning

confidence: 99%

“…Hagglund et al, 22 following an elite group of soccer players over a 2-year period, documented that athletes returning from hamstrings injuries were almost 3 times as likely to experience an identical injury the next season. 22 Using a prospective approach, others 1,5,23,24 have shown decreased rates of hamstrings strain after implementing multimodal intervention programs. The principal focus of the resistance exercises should be to impose an increased eccentric demand on the knee flexors and, after attaining sufficient strength, to incorporate a speed component (ie, power and endurance) into the progression.…”

Section: Clinical Relevancementioning

confidence: 99%

“…The principal focus of the resistance exercises should be to impose an increased eccentric demand on the knee flexors and, after attaining sufficient strength, to incorporate a speed component (ie, power and endurance) into the progression. 23,24 Specific examples, such as Nordic hamstrings curls, which require an individual to resist a forward-falling motion by using the hamstrings, 5 potentially induce near-maximal neuromuscular involvement during the eccentric phase of contraction. Additionally, performing these exercises after a series of short-sided games would maximize the practical application of soccer-specific fatigue, as these drills have been shown to assimilate both match-related fatigue and soccer-specific movement patterns.…”

Section: Clinical Relevancementioning

confidence: 99%

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Soccer-Specific Fatigue and Eccentric Hamstrings Muscle Strength

Greig

Siegler

2009

Journal of Athletic Training

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Context: Epidemiologic findings of higher incidences of hamstrings muscle strains during the latter stages of soccer match play have been attributed to fatigue.Objective: To investigate the influence of soccer-specific fatigue on the peak eccentric torque of the knee flexor muscles.Design: Descriptive laboratory study. Results: Peak eccentric knee flexor torque at the end of the game (T 300eccH105 5 127 6 25 Nm) and at the end of the passive halftime interval (T 300eccH60 5 133 6 32 Nm) was reduced relative to T 300eccH00 (167 6 35 Nm, P , .01) and T 300eccH15 (161 6 35 Nm, P 5 .02).Conclusions: Eccentric hamstrings strength decreased as a function of time and after the halftime interval. This finding indicates a greater risk of injuries at these specific times, especially for explosive movements, in accordance with epidemiologic observations. Incorporating eccentric knee flexor exercises into resistance training sessions that follow soccerspecific conditioning is warranted to try to reduce the incidence or recurrence of hamstrings strains.Key Words: athletic injuries, isokinetic activity Key PointsN Eccentric peak hamstrings torque decreased during the match and after halftime. N The fatigued player may be more susceptible to both muscle strain and joint injuries. N Developing fatigue-resistant eccentric hamstrings strength and rewarming properly may help to reduce the risk of injury.H amstrings muscle strains are frequent injuries in professional soccer players. [1][2][3][4] In an epidemiologic study of English professional soccer athletes, the thigh was the most prevalent site for injury, with 81% of thigh injuries classified as muscular strains. 2 In US Major League Soccer, hamstrings strains incurred during matches and training sessions accounted for 42% of all strain injuries. 4 An etiologic risk factor commonly attributed to the high incidence of thigh strain injuries is poor eccentric muscular strength. 5,6 The temporal pattern of injury during match play also indicates that fatigue might be a factor. 2 In English professional soccer players, 47% of match-play hamstrings strains were incurred during the final 15 minutes of each half. 3 The fatigue associated with soccer match play is specific to the characteristic activity profile. Soccer has an irregular and intermittent activity profile 7-10 and, thus, when considering soccer-specific fatigue, we should account for both physiologic and mechanical load. A soccer-specific fatigue protocol, based on the activity profile of match play, 7,11 has been previously evaluated 12 based on the duration of exercise bouts and, therefore, the frequency of changes in speed. This effort contrasted with previous attempts to replicate the demands of soccer using treadmill or free-running protocols, which have only been evaluated against the physiologic response. 13,14 Our aim was to quantify the temporal influence of soccer-specific fatigue on changes in peak eccentric isokinetic torque of the knee flexors. If eccentric hamstrings strength is impaired as a result of fati...

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Section: Key Pointsmentioning

confidence: 99%

Section: Clinical Relevancementioning

confidence: 99%

Section: Clinical Relevancementioning

confidence: 99%

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Soccer-Specific Fatigue and Eccentric Hamstrings Muscle Strength

Greig

Siegler

2009

Journal of Athletic Training

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“…Swimming, aquagym and cycling can be classified as aerobic or cardiovascular training. It has been suggested that athletes should better invest their time in cardiovascular training, rather than in stretching as there is some evidence that the risk of injury to muscles is more closely related to poor aerobic fitness than to lack of flexibility [29].…”

Section: Other Modalities To Prevent Hamstring Strainsmentioning

confidence: 99%

Stretching in the prevention of hamstring strains: Attitudes, beliefs and current practices among football coaches in Mauritius

Chan¹,

Mahomoodally²,

Veeren³

2012

OJPM

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Context and Objective: Hamstring strain is a common injury in football and it causes a significant amount of time lost from competition and training. Since poor flexibility is thought to predispose to muscle strain, stretching is routinely recommended during warm-up routines by coaches to prevent injuries. However, available evidence suggests that pre-exercise stretching (PES), especially static stretching, has no benefit on injury rates and may even reduce performance in explosive type activities. We designed this study to assess the attitudes, beliefs and practices of football coaches regarding stretching in the prevention of hamstring strains. Design: A cross-sectional survey. Setting: Mauritius Football Association (MFA). Participants: 26 football coaches registered with the MFA. Intervention: Questionnaires were distributed to football coaches of the MFA via sports officers. Questionnaires were then collected two weeks after distribution. Main Outcome Measures: Attitudes, beliefs and practices of football coaches regarding stretching in the prevention of hamstring strains. Results: MFA coaches held generally positive attitudes and beliefs towards stretching. 88% of coaches felt that PES is beneficial and 93% believed that PES prevents hamstring strains. The majority of coaches recommended stretching after warming up (81%) and after the training session (93%). 76% of coaches also advised stretching outside the training sessions. 96% of coaches used static stretching to stretch the hamstrings. The hamstrings were stretched on average for 4 times at each training session and the mean duration of a static stretch was 12 seconds. Conclusions: Nearly all coaches believed that PES prevents hamstring strains although evidence is limited. Some of the coaches' beliefs and practices were not in line with current recommendations. Coaches reported that their stretching practices would be most likely influenced by scientific research. Thus there is an urgent need to devise awareness and training programmes in this area.

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“…Mjolsnes et al 13 encontraram aumento (11%) do pico de torque dos músculos isquiotibiais após 10 semanas de treinamento excêntrico. Resultados semelhantes foram encontrados por Seger et al…”

Section: Introductionunclassified

Influência do treinamento excêntrico nas razões de torque de flexores/extensores do joelho

et al. 2010

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O treinamento excêntrico (Texc) produz adaptações musculares que minimizam a ocorrência de lesões e é usado em reabilitação e treinamento de força, mas pouco se sabe sobre seus efeitos no equilíbrio entre músculos antagonistas do joelho. As razões de torque permitem determinar esses desequilíbrios musculares. O objetivo do estudo foi avaliar os efeitos de 12 semanas de Texc nas razões de torque excêntrico (Iexc:Qexc) entre os músculos isquiotibiais (I) e quadríceps (Q). Vinte e quatro sujeitos saudáveis do sexo masculino foram distribuídos nos grupos controle (GC, n=13, idade 27,7±4,6 anos) e experimental (GE, n=11, idade 28,5±9,5 anos), submetido ao treinamento. Um dinamômetro isocinético foi utilizado para o Texc (velocidade de -60 º/s) e para as avaliações (uma a cada quatro semanas). As razões de torque medidas foram comparadas estatisticamente entre os grupos e intragrupos entre as avaliações, com nível de significância de 5%. No GE, foi observada redução das razões de torque da avaliação (AV) inicial para as demais: AV1x AV2, p=0,005; AV1x AV3, p=0,001; e AV1x AV4, p<0,001. Na avaliação final, as razões do GE foram menores quando comparadas às do GC (p=0,041). O Texc altera pois o equilíbrio dos músculos flexores e extensores do joelho: doze semanas de Texc levam à redução da razão Iexc:Qexc e ao aumento do torque extensor, sem alteração significativa do torque flexor, podendo ser usado na reabilitação para fortalecimento dos músculos extensores do joelho.

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A 10‐week randomized trial comparing eccentric vs. concentric hamstring strength training in well‐trained soccer players

Abstract: NH training for 10 weeks more effectively develops maximal eccentric hamstring strength in well-trained soccer players than a comparable program based on traditional HC.

Cited by 387 publications

References 36 publications

Soccer-Specific Fatigue and Eccentric Hamstrings Muscle Strength

Soccer-Specific Fatigue and Eccentric Hamstrings Muscle Strength

Stretching in the prevention of hamstring strains: Attitudes, beliefs and current practices among football coaches in Mauritius

Influência do treinamento excêntrico nas razões de torque de flexores/extensores do joelho

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