Estrategias de prevención de lesiones deportivas en jóvenes futbolistas profesionales: estabilidad del core y propiocepción / Strategies to prevent sports injuries in professional soccers: core stability and proprioception / Estratégias para prevenir lesões esportivas em jogadores de futebol profissionais: estabilidade do núcleo e propriocepção

Objetivo: Comprobar si existe asociación entre un protocolo de evaluación de la estabilidad del core y propiocepción y el número de lesiones sufridas por los futbolistas durante una temporada, así como valorar si cada uno de los tres test que conforman el protocolo está asociado o tiene capacidad predictiva sobre un tipo diferente de lesión, atendiendo al mecanismo lesional y la localización de la misma. Método: 30 futbolistas profesionales jóvenes (20.13 ± 2.53 años, 73.67 ± 7.49 kg y 178.1 ± 6.72 cm) realizaron una evaluación de la estabilidad del core y la propiocepción mediante los test de Single Leg Landing, mantenimiento isométrico de McGill e Y-Balance Test al finalizar la temporada. Se registraron aquellas lesiones sufridas durante la temporada producidas sin contacto o por sobreuso. Resultados: Se observaron peores resultados en aquellos futbolistas que sufrieron alguna lesión, siendo el Single Leg Landing de la pierna izquierda el único con diferencias significativas (p = 0.009). También se encontraron correlaciones significativas entre el test de McGill y los esguinces de tobillo (rho = -0.402; p = 0.031). El Y-Balance Test parece predecir la probabilidad de sufrir esguinces de tobillo en el pie izquierdo (OR = 1.45; 95% CI = 1.04 - 2.14; p = 0.032). Conclusiones: El presente estudio ha demostrado asociaciones entre los resultados de distintos test de valoración de la estabilidad del core y la propiocepción y la incidencia de lesiones padecidas durante una temporada por jóvenes futbolistas profesionales, destacando especialmente los test de McGill y Single Leg Landing

Objective: to assess if there is an association between a protocol of evaluation of core stability and proprioception and the number of injuries suffered by soccers during a season, as well as to verify if each one of the three tests that conform the protocol is associated or has predictive power over a different type of injury, attending to the lesional mechanism and the location of the same. Method: 30 young professional soccer players (20.13 ± 2.53 years, 73.67 ± 7.49 kg and 178.1 ± 6.72 cm) performed a protocol of evaluation of core stability and proprioception at the end of the season composed by Single Leg Landing test, McGill isometric holding test and Y-Balance test. Non contact or overuse injuries suffered during the season was recorded. Results: Players with previous history of injury showed worse results in the mean of the tests than injury free players, although Single Leg Landing (leg left) was the only test with significant differences (p = 0.009). Significant correlations were also found between the McGill test and ankle sprains (rho = -0.402; p = 0.031). Y-Balance Test appears to predict the probability of suffer ankle sprains in the left foot (OR = 1.45, 95% CI = 1.04 - 2.14, p = 0.032). Conclusion: The present study has demonstrated associations between the results of different assessment tests of core stability and proprioception and the incidence of injuries sustained during a season by young professional players, especially the MacGill and Single Leg Landing tests

Objetivo: Avaliar se existe uma associação entre um protocolo de avaliação da estabilidade do núcleo e propriocepção e o número de lesões sofridas pelos jogadores footbal durante uma temporada, bem como para verificar se cada um dos três testes que conformam o protocolo está associada ou tem capacidade de previsão sobre um tipo diferente de lesão, atendendo ao mecanismo lesional e a localização do mesmo. Método: 30 jovem profissional jogadores de futebol (20.13 ± 2.53 anos, 73.67 ± 7.49 kg e 178.1 ± 6.72 cm) realizaram um protocolo de avaliação da estabilidade do núcleo e propriocepção no final da temporada composta por Single Leg Landing, McGill teste e Y-Balance teste. Lesões sem contato ou por acumulação lesões não sofreu durante a temporada foi gravado. Resultados: piores resultados foram observados no meio de algum teste do controle postural de aqueles jogadores que sofreram lesões, sendo o único Single Leg Landing perna esquerda a única com diferença significativa (p = 0.009). correlações significativas entre teste McGill e entorse do tornozelo (p = 0.031 P = -0.402) foram também encontradas. O Teste de Y-Balance parece prever a probabilidade de sofrer um pé entorse do tornozelo esquerdo (OR = 1.45, IC 95% = 1.04-2.14; p = 0.032). Conclusões: Este estudo demonstrou associações entre os resultados dos testes diferentes para avaliar a estabilidade do núcleo e controle postural proprioceptiva ea incidência de ferimentos sofridos durante uma temporada para os jovens futebolistas profissionais, especialmente destacando o teste McGill e Single Leg Landing

Relationships between repeated sprint ability, mechanical parameters, and blood metabolites in professional soccer players.

This study analyzed the acute metabolic and mechanical responses to a specific repeated sprint ability (RSA) test. Eighteen male professional soccer players from a team of the First Division of Spanish National League participated. A 12 × 30-m RSA test with 30-second recovery together with countermovement jump test (CMJ) pre a post RSA test was performed. Mechanical responses (i.e., height performance in CMJ and speed loss) and metabolic responses (i.e., blood lactate and ammonia concentrations) were measured before and after exercise. A related sample t-test was used to analyze CMJ height pre-post changes as well as to compare pre- and post-exercise lactate and ammonia levels. Countermovement jump height loss pre-post session (8%) was significant, and fatigue, measured as CMJ height loss, was strongly correlated to lactate (r = 0.97; p < 0.001) and ammonia (r = 0.92; p < 0.001) for all players. The relationships between the variables studied were determined by calculating the Pearson correlation coefficients. The metabolic stress developed during the effort can be estimated by controlling CMJ because of the high correlation between CMJ and blood lactate and ammonia concentrations. The high correlations found between mechanical (speed and CMJ height losses) and metabolic (lactate and ammonia) measures of fatigue highlight the utility and validity of using CMJ to monitor training load and quantify objectively neuromuscular fatigue during RSA.