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We compared the declarative tactical knowledge (DTK) of 196 male and female players (16.9 ± 2.4 years) belonging to the academy of a Spanish professional football club with their participation (minutes played), football competence (coaching staff assessment), and future potential (technical direction prediction). The DTK had no correlation with the minutes played (%) by the participants during the 2021-22 season (r = -.162, p = .045). Student's t test for independent samples compared the football competence of the participants with high DTK (n = 74) and low DTK (n = 76), proving a small impact (p = .021, d = 0.39) in favor of the first group. Although the high-DTK group showed a better average of potentiality, the technical direction identified more potential players for the first team in the low-DTK group. In conclusion, no solid evidence was found to justify that participants with higher DTK in each team were those who played more minutes and showed greater football competence and potentiality.

Introduction and Objectives: Infectious diseases are one of the major causes of sudden death, but data of sudden unexpected death from infectious diseases (SUDID) are sparse in children and young people. The aim of this study is to analyse their epidemiological, clinical, pathological and microbiological characteristics., Methods: Population observational study of all deaths due to infectious diseases in people aged 0-34 years in Biscay between 1991 and 2010. The data of Mortality Register and Forensic Pathology Service were analysed. The SUDID cases in which a forensic autopsy was performed were identified., Results: There were 56 SUDID cases (16% of the all sudden deaths). Myocarditis (n=20) and acute bacterial bronchopneumonia/pneumonia (n=18) were the most frequent causes, followed by meningococcemia (n=5) and viral pneumonia (n=4). A chronic co-morbid condition (mainly drug abuse in young people and moderate low birth weight in infants) was recorded in one-third and prodromal symptoms in two-thirds. Seventeen young people had consumed illegal drugs and/or methadone. In 17 of the 23 autopsies where microbiological analyses were performed, the organism responsible was identified. The incidence of SUDID was 0.6/100000 inhabitants/year, representing 5% of all deaths from infectious diseases. SUDID rate was 1.87 times higher in males than in females. The highest incidence occurred in infants (3.7)., Conclusions: SUDID is infrequent, but it represents a significant proportion of all sudden deaths in children and young people. The relationship between methadone and bronchopneumonia is noticeable. This article stresses the importance of microbiological analyses in SUDID. Investigation based on forensic pathology provides useful epidemiologic, clinico-pathological and microbiological information for prevention of infectious diseases., (Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.)