Hamstring Muscle Strain Recurrence and Strength Performance Disorders

Croisier, Jean-Louis; Forthomme, Bénédicte; Namurois, Marie-Hélène; Vanderthommen, Marc; Crielaard, Jean-Michel

doi:10.1177/03635465020300020901

Cited by 496 publications

(419 citation statements)

References 40 publications

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“…Bilateral asymmetries of more than 10% have been reported to pose an increased risk of injury to football players [21]. With regards to bilateral imbalances in female collegiate athletes, it has been suggested that when a difference of 15% or more exists on either side of the body, the likelihood of sustaining an injury to the lower extremities increases [22].…”

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confidence: 99%

Peak Isokinetic Torques of Football Players Participating in Different Levels in Cyprus and Lower Limb Asymmetries

Parpa¹,

Michaelides²

2017

JSS

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BACKGROUND: Lower body strength is considered to be a critical component towards successful exercise performance in football players. The aim of this study was to describe the peak isokinetic torque of the knee in professional football players of different League divisions in Cyprus and assess bilateral and unilateral asymmetries of strength. METHODS: Four hundred and twenty-nine professional male football players participated in this study (Division 1, n = 245 and Division 2, n = 184). The isokinetic muscle function of the knee was measured using the Humac Norm Testing and Rehabilitation system (CSMi Medical & Solution, USA). Measurements were collected at angle speeds of 60 °/sec and 300 °/sec, for 3 and 25-repetitions respectively. RESULTS: At both angle speeds, peak isokinetic torque of the knee joint was significantly higher in the right and left knees of players in Division 1 (D1) compared to those competing in Division 2 (D2). At both testing speeds, peak flexor torque of the left hamstrings was significantly higher in players participating in Division 1 compared to those competing in Division 2. The right hamstrings yielded similar results, except at 60 °/sec, where no difference was found between the groups. CONCLUSION: This study provides valuable data regarding the forces produced by the lower body of football players participating in D1 and D2 in Cyprus, whilst also disclosing there to be no bilateral imbalances or abnormal H/Q ratios. The results of this study may provide pertinent information that can be used by the coaching staff for training and recruiting purposes.

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confidence: 99%

Peak Isokinetic Torques of Football Players Participating in Different Levels in Cyprus and Lower Limb Asymmetries

Parpa¹,

Michaelides²

2017

JSS

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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.…”

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confidence: 99%

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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“…However, it seems that fatigue of only one of the limbs alters this common command and dissociating the command for both limbs (1) . In practical terms, training, as well as the familiarization to tasks, may reduce the bilateral strength deficit minimizing the asymmetry, especially at fatiguing conditions, in which the control dissociation may modify the overload between limbs, since tasks which present asymmetry between limbs are more prone to injuries during physical performance (30)(31)(32)(33)(34)(35)(36) .…”

Section: Asymmetryindices (%) Dominantmentioning

confidence: 99%

Influência da fadiga unilateral de membro inferior sobre o salto vertical bilateral

Marchetti

Uchida

2011

Rev Bras Med Esporte

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It is common to observe bilateral strength deficit during the vertical jump. This is characterized by lower strength produced during bilateral contractions, when compared to the sum of the unilateral contractions of similar muscles. There is not much scientific knowledge about the effect of unilateral fatigue on bilateral activities. The aim of this study was to investigate the effect of unilateral fatigue on bilateral deficit performance during bipedal vertical jump. Ten sedentary young adults unilaterally fatigued each lower limb and performed vertical jumps (bipedal and unipedal). We measured the vertical ground reaction force and myoelectrical activity to each lower limb and conditions (pre-fatigue, fatigue of the dominant limb (DF) and non dominant limb (NDF) were measured. Differences between tasks and conditions only on the pre-fatigue (p=0.030) were observed. Differences were observed for the bipedal vertical jump between pre-fatigue and DF (p=0.005), and unipedal vertical jump between pre-fatigue and DF (p<0.001) and NDF (p<0.001). We only observed change on the performance of bipedal vertical jump during the DF condition. We observed a trend to the asymmetry index decrease for the muscular action of the fatigued contralateral lower limb by electromyography. The results suggest that there is a common command where the nervous system considers the muscles simultaneously activated as a unit, except in conditions of unilateral lower limb fatigue.

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Hamstring Muscle Strain Recurrence and Strength Performance Disorders

Cited by 496 publications

References 40 publications

Peak Isokinetic Torques of Football Players Participating in Different Levels in Cyprus and Lower Limb Asymmetries

Peak Isokinetic Torques of Football Players Participating in Different Levels in Cyprus and Lower Limb Asymmetries

Soccer-Specific Fatigue and Eccentric Hamstrings Muscle Strength

Influência da fadiga unilateral de membro inferior sobre o salto vertical bilateral

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