Intrinsic risk factors of non-contact quadriceps and hamstring strains in soccer: a prospective study of 100 professional players

Fousekis, Konstantinos; Tsepis, Εlias; Poulmedis, Peter; Αθανασόπουλος, Σ.; Vagenas, George

doi:10.1136/bjsm.2010.077560

Cited by 304 publications

(332 citation statements)

References 41 publications

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“…Além disso, o maior índice de fadiga dos flexores do joelho pode favorecer a ocorrência de lesões nessa musculatura. Pesquisas têm evidenciado uma maior incidência de lesões por estiramento em isquiossurais quando comparada àquela observada na musculatura extensora 20,21 . Uma vez que a musculatura que apresentou um maior índice da fadiga foi aquela que possui maior incidência de lesões musculares, futuros estudos devem investigar a relação entre o índice de fadiga isocinético dos isquiossurais e a incidência de lesões dessa musculatura.…”

Section: Discussionunclassified

“…Além disso, lesões por estiramento dos isquiossurais apresentam maior incidência no segundo tempo de uma partida de futebol, sugerindo que a fadiga muscular pode ser um dos fatores de risco para a ocorrência dessas lesões 19 . A frequência de estiramento dos flexores do joelho é maior quando comparada à dos extensores 20,21 , o que poderia ser justificado por uma maior fatigabilidade dos isquiossurais. Além disso, considerando que as características do treinamento e as atividades em campo diferem entre jogadores, é possível que a resistência à fadiga seja variável de acordo com o posicionamento em campo, embora os estudos que realizaram essa investigação apresentem resultados controversos 13,22 .…”

Section: Introductionunclassified

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Força muscular e índice de fadiga dos extensores e flexores do joelho de jogadores profissionais de futebol de acordo com o posicionamento em campo

Carvalhais

Santos

Araújo

et al. 2013

Rev Bras Med Esporte

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RESuMoIntrodução: Assimetrias na capacidade de produção de força entre músculos dos membros inferiores e fadiga muscular podem favorecer a ocorrência de lesões em atletas de futebol. Considerando-se que existem diferenças individuais determinadas pelas diversas funções exercidas pelos jogadores, é possível que a presença de assimetrias de força e fadiga muscular esteja relacionada ao posicionamento em campo. Objetivos: 1) Investigar diferenças na assimetria de pico de torque (PT), na assimetria de trabalho (T) e no índice de fadiga ( ABStRAct Introduction: Strength asymmetry among the muscles of the lower limbs and muscle fatigue may predispose soccer players to injuries. Regarding the individual differences determined by diverse roles performed by players, it is possible that the presence of asymmetries of muscle strength and fatigue is related to playing position. Objectives: 1) To investigate differences in asymmetry of peak torque (PT), work asymmetry (W) and fatigue index (FI) of knee extensors and flexors of professional soccer players according to their positioning in field; 2) To determine if FI of knee flexors is higher than

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Section: Discussionunclassified

Section: Introductionunclassified

Força muscular e índice de fadiga dos extensores e flexores do joelho de jogadores profissionais de futebol de acordo com o posicionamento em campo

Carvalhais

Santos

Araújo

et al. 2013

Rev Bras Med Esporte

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“…15 As previously mentioned, muscle-length asymmetries and strength imbalances in the antagonist groups are associated with an increased risk of muscle strains. 1,2,16,22,23 These asymmetries and imbalances may be greatest during the preaseason as athletes exit a period of decreased activity levels and adherence to prophylactic therapeutic exercise programs. It is also common for athletes to experience the greatest total training volume during the preseason, which may cause fatigue that places athletes at greater risk for strains.…”

Section: Time In Seasonmentioning

confidence: 99%

“…This may help to explain the increased rate of quadriceps strains observed in female athletes, as they are often shorter than their male counterparts who play the same sport. 1 Because we did not collect demographic information, such as height, future researchers should examine the association between height and the risk of quadriceps strain. Future investigators should also seek to elucidate the reasons why female athletes appeared to incur a higher rate and greater chance of recurrence of quadriceps strains, whereas men experienced a higher overall rate and greater chance of recurrence of hamstrings strains.…”

Section: Sex Differencesmentioning

confidence: 99%

“…The available data are almost exclusively from elite-level soccer players. 1,12 Furthermore, these data typically do not account for non-time-loss (NTL) injuries, that is, injuries resulting in participation-restriction time of less than 24 hours. The purpose of our study was to describe the epidemiology of quadriceps strains in 25 NCAA championship sports over 6 recent academic years (ie, 2009-2010 through 2014-2015).…”

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confidence: 99%

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Epidemiology of Quadriceps Strains in National Collegiate Athletic Association Athletes, 2009–2010 Through 2014–2015

Eckard

Kerr

Padua

et al. 2017

Journal of Athletic Training

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academic years were analyzed. Quadriceps strain injury rates and injury rate ratios (IRRs) were reported with 95% confidence intervals (CIs).Results: Overall, 517 quadriceps strains were reported, resulting in an injury rate of 1.07/10 000 athlete-exposures (AEs). The sports with the highest overall quadriceps strain rates were women's soccer (5.61/10 000 AEs), men's soccer (2.52/ 10 000 AEs), women's indoor track (2.24/10 000 AEs), and women's softball (2.15/10 000 AEs). Across sex-comparable sports, women had a higher rate of quadriceps strains than men overall (1.97 versus 0.65/10 000 AEs; IRR ¼ 3.03; 95% CI ¼ 2.45, 3.76). The majority of quadriceps strains were sustained during practice (77.8%). However, the quadriceps strain rate was higher during competition than during practice (1.29 versus 1.02/10 000 AEs; IRR ¼ 1.27; 95% CI ¼ 1.03, 1.56). Most quadriceps strains occurred in the preseason (57.8%), and rates were higher during the preseason compared with the regular season (2.29 versus 0.63/10 000 AEs; IRR ¼ 3.60; 95% CI ¼ 3.02, 4.30). Common injury mechanisms were noncontact (63.2%) and overuse (21.9%). Most quadriceps strains restricted participation by less than 1 week (79.3%).Conclusions: Across 25 sports, higher quadriceps strain rates were found in women versus men, in competitions versus practices, and in the preseason versus the regular season. Most quadriceps strains were minor in severity, although further surveillance is needed to better examine the risk factors associated with incidence and severity.Key Words: injury surveillance, injury prevention, collegiate sports Key PointsThe highest rates of quadriceps strains were found in women's and men's soccer. Rates of quadriceps strains were higher in women versus men (in sex-comparable sports), in competitions versus practices, and in the preseason versus regular season.

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Single-joint eccentric knee extension training preferentially trains the rectus femoris within the quadriceps muscles

et al. 2018

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Eccentric contraction‐induced quadriceps strains, particularly in the rectus femoris (RF), frequently occur in sports. By using MRI‐based transverse relaxation time (T2) as an index of exercise‐induced muscle edema, previous studies found pronounced damage in RF after an acute single‐joint eccentric knee extension exercise. This study examined whether single‐joint eccentric knee extension training would preferentially train RF, resulting in greater hypertrophy of RF than the other quadriceps muscles. Twelve males conducted work‐matched single‐joint isokinetic (180°/s) maximal eccentric contractions of the knee extensors in one leg (ECC‐leg) and concentric in the other (CON‐leg), six sets/session (3‐5 sets in the initial 1‐3 sessions), two sessions/wk for 10 weeks. Muscle volume of each quadriceps was measured pre‐ and post‐training. T2 of each muscle was assessed weekly throughout the training period and pre‐ and post‐training. Muscle volume significantly increased in all muscles in ECC‐leg only, with a greater degree for RF (+7.3%) than the vasti (2.9%‐3.7%). T2 did not change in all muscles throughout. These results suggest that RF can be preferentially trained by single‐joint eccentric knee extension training. Cooperatively with the potential repeated bout effect (ie, protective effect) in eccentric exercise, this training modality would have positive implications for strain injury prevention of RF.

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Intrinsic risk factors of non-contact quadriceps and hamstring strains in soccer: a prospective study of 100 professional players

Cited by 304 publications

References 41 publications

Força muscular e índice de fadiga dos extensores e flexores do joelho de jogadores profissionais de futebol de acordo com o posicionamento em campo

Força muscular e índice de fadiga dos extensores e flexores do joelho de jogadores profissionais de futebol de acordo com o posicionamento em campo

Epidemiology of Quadriceps Strains in National Collegiate Athletic Association Athletes, 2009–2010 Through 2014–2015

Single-joint eccentric knee extension training preferentially trains the rectus femoris within the quadriceps muscles

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