Diseño y evaluación de un programa de prevención de lesiones adaptado a las categorías de formación de una escuela deportiva de fútbol

El propósito principal de este estudio ha sido la valoración de la epidemiología de las lesiones en los jugadores de fútbol en categorías de formación tras la intervención realizada con el programa de prevención MC-7, diseñado específicamente para reducir la frecuencia, la severidad y la incidencia de las lesiones, con el fin de aumentar la disponibilidad de los futbolistas para desarrollar la práctica deportiva en las mejores condiciones. De acuerdo con los criterios metodológicos presentados por el documento de consenso para los estudios sobre lesiones en el fútbol, se registraron todas las variables epidemiológicas de 431 futbolistas de 8 a 23 años, durante una temporada completa (2012/2013). Tras analizar los resultados obtenidos en este primer estudio, se diseñó el MC-7 y se aplicó a 471 futbolistas del mismo contexto, registrándose de nuevo los resultados bajo la misma metodología que la temporada anterior, para su posterior comparación. Entre los resultados obtenidos se destaca que tras la intervención realizada con el programa MC-7: el número de lesiones registradas disminuyó en un 46,5%, siendo más efectivo dicho programa en los jugadores mayores de 14 años; el número de jugadores lesionados y la cantidad de lesiones por jugador se redujo significativamente en la categoría cadete, juvenil y filial; la frecuencia de las lesiones musculares en la cadera/aductor y en el muslo, y las articulares en el tobillo y en la rodilla se redujeron con respecto a las registradas anteriormente; el número de días de ausencia por lesión se redujo en más del 50%, disminuyéndose las lesiones graves en un 67%; y se pasó de tener 3,28 lesiones por cada 1000 horas de exposición a 1,8 lesiones por cada 1000 horas, encontrándose diferencias significativas también en la incidencia lesional de acuerdo con el momento de práctica deportiva (de 3,07 lesiones por cada 1000 horas de entrenamiento a 1,43 y de 9,5 lesiones por cada 1000 horas de competición a 4,91). El análisis crítico de los resultados en base a la frecuencia y la severidad de las lesiones en el contexto donde se llevó a cabo dicho estudio, determinó la importancia de intervenir, de manera profesional, sobre dicha población para repercutir positivamente sobre la salud y la seguridad de los jugadores de fútbol en etapas de formación, haciendo que el deporte más popular del mundo pueda garantizar los beneficios propios de la actividad física en jugadores que están en periodo de aprendizaje

Structure of the training program during the COVID-19 confinement in spanish professional football, a coach survey

COVID-19 has produced an exceptional situation for sport due to confinement and restrictions. The usual training programs and competition have been interrupted in world football, requiring an adaptation of training to the new situation. Objectives To describe and analyze the training programs carried out during the COVID-19 forced confinement in mens professional football in Spain. Methods Observational Study based on a telematic ad-hoc questionnaire developed to meet the objective of the study. The sample consisted of thirty-six coaches representing thirty-six professional men?s soccer teams in the Spanish first and second division. Results Training programs developed during confinement prioritized conditioning and functional emphasis, in addition to general and nonspecific resistance training, due to contextual limitations. Conclusion The structure of training during the COVID-19 confinement was limited by contextual circumstances. This study has made possible to record the training and strategies used in professional football during a confinement due to a worldwide state of alarm, with the aim of resuming competitive activity in the best possible conditions

The Effect of Weekly Training Load across a Competitive Microcycle on Contextual Variables in Professional Soccer

10 p.Analysis of the key performance variables in soccer is one of the most continuous and attractive research topics. Using global positioning devices (GPS), the primary aim of this study was to highlight the physiological response of a professional soccer team across competitive microcycles in-season according to the most influential contextual performance variables. Determining the training load (TL), a work ratio was established between all recorded data within the training sessions and the competitive profile (CP). Each microcycle was classified in accordance with the contextual variables: opponent level (high, medium, low), match location (home and away) and score (win, draw, lose). Results revealed that the team were significantly more successful (games won) in competitive games against high-level opponents and when played at home. Cumulative microcycle/ weekly training load (WTL) was significantly lower when the team won. In addition to the opponent level and the match location, WTL could condition the athlete?s performance in the competition. Competitive performance responses are the main source of information for the planning of training programs. The results of this study could be used as a reference to structure TL and WTL according to contextual variables in the competition. This study, which is the first of its kind, revealed that WTL effects the performance of the players in the competition

Workloads of Different Soccer-Specific Drills in Professional Players

Soccer is a predominantly tactical sport and, therefore, tactical training has become the most widely used strategy to improve players&apos; performance. The objective of the present study was to assess the workload of soccer-specific drills in professional players over a two-season period in an established context. GPS technology was used to record the data. One hundred and thirty-two (n = 132) soccer-specific drills were studied and grouped by categories. The individual demands of each task were related to the individual competitive profile of each player. The level of physical demand was significantly different in relation to the specific soccer drills analysed. Total distance covered, high-speed running, and the total number of high accelerations and decelerations were significantly higher in competition than in drills used for training sessions (p < .001). The Large-Sided Games (LSG), Big-Position Games (BPG) and Position Games (PG) showed higher maximum running speed values than the rest of the exercises (p < .01). The sum of high accelerations and decelerations values was greater in the Small-Sided Games (SSG) than in BPG (p < .001), Small-Position Games (SPG) (p < .001) and Physical-Technical Circuits (PTC) (p < .001). Significant differences were observed in the exercises analysed according to the player?s position. The current findings provide a detailed description of conditional demands placed on soccer players in different soccer-specific drills during training sessions, in a professional soccer context and according to their playing position, which may be helpful in the development of individualized training programs in other contexts

Influence of body composition on vertical jump performance according with the age and the playing position in football players

Body composition and vertical jump are two factors in the multifactorial approach to talent identification in soccer with implication on performance monitorization and injury rehabilitation. The aim of this study was to describe the anthropometric attributes and vertical jump performance in young soccer players based on their playing position.four hundred and thirty-four young soccer players from 7 to 25 years (13.4 ± 3.45 yrs; 156 ± 17 cm; 47.9 ± 15.4 kg), who trained 3 days/week for 1.5 hours/ day, took part in the study. All were split up based on their age or soccer category (U9, U11, U13, U15, U17, U25) and playing position (goalkeeper, defenders, midfielders and forwards). Then, body composition was measure using the anthropometric method and vertical jump performance was analysed by three vertical jump test Squat Jump (SJ), Counter-movement Jump (CMJ) and Abalakov Jump (CMJA).significant differences among playing positions were mainly detected in categories U13, U15 and U25. Goalkeepers from U13 category reported a significantly higher fat free mass, appendicular lean body mass, area of the thigh and area of the calf (P < 0.05). While, defenders from U25 category showed a significantly greater vertical jump performance compared to midfielders for SJ, midfielders and forwards for CMJ and all playing position for CMJA (P < 0.05).in addition to biological age and muscle mass development, playing position should be taken into consideration as a relevant variable in the utilization of body composition and vertical jump performance as talent detection factors.Actividad Física y Deport

Influencia de la composición corporal sobre el rendimiento en salto vertical dependiendo de la categoría de la formación y la demarcación en futbolistas

Introduction: body composition and vertical jump are two factors in the multifactorial approach to talent identification in soccer with implication on performance monitorization and injury rehabilitation. The aim of this study was to describe the anthropometric attributes and vertical jump performance in young soccer players based on their playing position. Methods: four hundred and thirty-four young soccer players from 7 to 25 years (13.4 ± 3.45 yrs; 156 ± 17 cm; 47.9 ± 15.4 kg), who trained 3 days/week for 1.5 hours/ day, took part in the study. All were split up based on their age or soccer category (U9, U11, U13, U15, U17, U25) and playing position (goalkeeper, defenders, midfielders and forwards). Then, body composition was measure using the anthropometric method and vertical jump performance was analysed by three vertical jump test Squat Jump (SJ), Counter-movement Jump (CMJ) and Abalakov Jump (CMJA). Results: significant differences among playing positions were mainly detected in categories U13, U15 and U25. Goalkeepers from U13 category reported a significantly higher fat free mass, appendicular lean body mass, area of the thigh and area of the calf (P < 0.05). While, defenders from U25 category showed a significantly greater vertical jump performance compared to midfielders for SJ, midfielders and forwards for CMJ and all playing position for CMJA (P < 0.05). Conclusions: in addition to biological age and muscle mass development, playing position should be taken intoconsideration as a relevant variable in the utilization of body composition and vertical jump performance as talent detection factors.Actividad Física y Deport

Dolor inguinal en el fútbol. Factores de riesgo y estrategias metodológicas de intervención: prevención, rehabilitación y readaptación físico-deportiva. Revisión bibliográfica

The groin pain referred to sports is a very complex pathology, so it essential to know the injury in depth to be able to perform an appropriate intervention, determining the most important elements which are necessary to develop on a preventive plan or recovery / physical-sport rehabilitation, having in consideration the complexity and the individualization of each case of the pathology. In this study, a review is made of the different risk factors of groin pain in soccer and of the methodological proposals for intervention in prevention, recovery and physical-sport rehabilitation, determining fundamental bases in the approach to groin pain referred to sport of soccer.El dolor inguinal referido al deporte es una patología muy compleja, por ello es fundamental conocer la lesión en profundidad para poder realizar una intervención adecuada, determinando los elementos necesarios para desarrollar un plan preventivo o recuperación / re-adaptación físico-deportiva, teniendo en cuenta la complejidad y la individualización de la patología. En este estudio se realiza una revisión de los diferentes factores de riesgo de dolor inguinal en fútbol y de las propuestas metodológicas de intervención en prevención, recuperación y readaptación físico-deportiva, determinando unas bases fundamentales en el abordaje del dolor inguinal referido al deporte en fútbol.Actividad Física y Deport

Hyperoxemia and excess oxygen use in early acute respiratory distress syndrome : Insights from the LUNG SAFE study

Publisher Copyright: © 2020 The Author(s). Copyright: Copyright 2020 Elsevier B.V., All rights reserved.Background: Concerns exist regarding the prevalence and impact of unnecessary oxygen use in patients with acute respiratory distress syndrome (ARDS). We examined this issue in patients with ARDS enrolled in the Large observational study to UNderstand the Global impact of Severe Acute respiratory FailurE (LUNG SAFE) study. Methods: In this secondary analysis of the LUNG SAFE study, we wished to determine the prevalence and the outcomes associated with hyperoxemia on day 1, sustained hyperoxemia, and excessive oxygen use in patients with early ARDS. Patients who fulfilled criteria of ARDS on day 1 and day 2 of acute hypoxemic respiratory failure were categorized based on the presence of hyperoxemia (PaO2 > 100 mmHg) on day 1, sustained (i.e., present on day 1 and day 2) hyperoxemia, or excessive oxygen use (FIO2 ≥ 0.60 during hyperoxemia). Results: Of 2005 patients that met the inclusion criteria, 131 (6.5%) were hypoxemic (PaO2 < 55 mmHg), 607 (30%) had hyperoxemia on day 1, and 250 (12%) had sustained hyperoxemia. Excess FIO2 use occurred in 400 (66%) out of 607 patients with hyperoxemia. Excess FIO2 use decreased from day 1 to day 2 of ARDS, with most hyperoxemic patients on day 2 receiving relatively low FIO2. Multivariate analyses found no independent relationship between day 1 hyperoxemia, sustained hyperoxemia, or excess FIO2 use and adverse clinical outcomes. Mortality was 42% in patients with excess FIO2 use, compared to 39% in a propensity-matched sample of normoxemic (PaO2 55-100 mmHg) patients (P = 0.47). Conclusions: Hyperoxemia and excess oxygen use are both prevalent in early ARDS but are most often non-sustained. No relationship was found between hyperoxemia or excessive oxygen use and patient outcome in this cohort. Trial registration: LUNG-SAFE is registered with ClinicalTrials.gov, NCT02010073publishersversionPeer reviewe

Identifying associations between diabetes and acute respiratory distress syndrome in patients with acute hypoxemic respiratory failure: an analysis of the LUNG SAFE database

Background: Diabetes mellitus is a common co-existing disease in the critically ill. Diabetes mellitus may reduce the risk of acute respiratory distress syndrome (ARDS), but data from previous studies are conflicting. The objective of this study was to evaluate associations between pre-existing diabetes mellitus and ARDS in critically ill patients with acute hypoxemic respiratory failure (AHRF). Methods: An ancillary analysis of a global, multi-centre prospective observational study (LUNG SAFE) was undertaken. LUNG SAFE evaluated all patients admitted to an intensive care unit (ICU) over a 4-week period, that required mechanical ventilation and met AHRF criteria. Patients who had their AHRF fully explained by cardiac failure were excluded. Important clinical characteristics were included in a stepwise selection approach (forward and backward selection combined with a significance level of 0.05) to identify a set of independent variables associated with having ARDS at any time, developing ARDS (defined as ARDS occurring after day 2 from meeting AHRF criteria) and with hospital mortality. Furthermore, propensity score analysis was undertaken to account for the differences in baseline characteristics between patients with and without diabetes mellitus, and the association between diabetes mellitus and outcomes of interest was assessed on matched samples. Results: Of the 4107 patients with AHRF included in this study, 3022 (73.6%) patients fulfilled ARDS criteria at admission or developed ARDS during their ICU stay. Diabetes mellitus was a pre-existing co-morbidity in 913 patients (22.2% of patients with AHRF). In multivariable analysis, there was no association between diabetes mellitus and having ARDS (OR 0.93 (0.78-1.11); p = 0.39), developing ARDS late (OR 0.79 (0.54-1.15); p = 0.22), or hospital mortality in patients with ARDS (1.15 (0.93-1.42); p = 0.19). In a matched sample of patients, there was no association between diabetes mellitus and outcomes of interest. Conclusions: In a large, global observational study of patients with AHRF, no association was found between diabetes mellitus and having ARDS, developing ARDS, or outcomes from ARDS. Trial registration: NCT02010073. Registered on 12 December 2013

Spontaneous Breathing in Early Acute Respiratory Distress Syndrome: Insights From the Large Observational Study to UNderstand the Global Impact of Severe Acute Respiratory FailurE Study

OBJECTIVES: To describe the characteristics and outcomes of patients with acute respiratory distress syndrome with or without spontaneous breathing and to investigate whether the effects of spontaneous breathing on outcome depend on acute respiratory distress syndrome severity. DESIGN: Planned secondary analysis of a prospective, observational, multicentre cohort study. SETTING: International sample of 459 ICUs from 50 countries. PATIENTS: Patients with acute respiratory distress syndrome and at least 2 days of invasive mechanical ventilation and available data for the mode of mechanical ventilation and respiratory rate for the 2 first days. INTERVENTIONS: Analysis of patients with and without spontaneous breathing, defined by the mode of mechanical ventilation and by actual respiratory rate compared with set respiratory rate during the first 48 hours of mechanical ventilation. MEASUREMENTS AND MAIN RESULTS: Spontaneous breathing was present in 67% of patients with mild acute respiratory distress syndrome, 58% of patients with moderate acute respiratory distress syndrome, and 46% of patients with severe acute respiratory distress syndrome. Patients with spontaneous breathing were older and had lower acute respiratory distress syndrome severity, Sequential Organ Failure Assessment scores, ICU and hospital mortality, and were less likely to be diagnosed with acute respiratory distress syndrome by clinicians. In adjusted analysis, spontaneous breathing during the first 2 days was not associated with an effect on ICU or hospital mortality (33% vs 37%; odds ratio, 1.18 [0.92-1.51]; p = 0.19 and 37% vs 41%; odds ratio, 1.18 [0.93-1.50]; p = 0.196, respectively ). Spontaneous breathing was associated with increased ventilator-free days (13 [0-22] vs 8 [0-20]; p = 0.014) and shorter duration of ICU stay (11 [6-20] vs 12 [7-22]; p = 0.04). CONCLUSIONS: Spontaneous breathing is common in patients with acute respiratory distress syndrome during the first 48 hours of mechanical ventilation. Spontaneous breathing is not associated with worse outcomes and may hasten liberation from the ventilator and from ICU. Although these results support the use of spontaneous breathing in patients with acute respiratory distress syndrome independent of acute respiratory distress syndrome severity, the use of controlled ventilation indicates a bias toward use in patients with higher disease severity. In addition, because the lack of reliable data on inspiratory effort in our study, prospective studies incorporating the magnitude of inspiratory effort and adjusting for all potential severity confounders are required