We describe an operational program that l o cates objects in a television image and traces their edges. The program accommodates the te levision camera, maximizing dynamic range during acquisit ion and sensi t iv i ty during t racing, to obtain the most appropriate image for each phase. If the trace routine loses an edge, various heurist ics diagnose the d i f f i c u l t y and tune both the ca...

Since the relative age effect (RAE) characterizes a problem in all age categories of alpine ski racing and soccer and the fact that, yet, to date the underlying factors have not been well investigated, the aim of the present study was to assess the influence of the biological maturity status on the RAE among youth alpine ski racers (YSR) and soccer players (SP). In total, 183 male and female YS...

The present study aimed to compare players' tactical behaviour in 3 vs. 3 and 6 vs. 6 soccer small-sided games (SSGs). The sample comprised 3,482 tactical actions performed by 18 U-11 youth soccer players from a Portuguese club, in 3 vs. 3 and 6 vs. 6 SSGs. All participants played eight minutes in both situations and field size was adapted according to the number of players involved (30 m × 19....

In the Soccer-Fun project, students program the brains of football players in a functional language. Soccer-Fun has been developed for an introductory course in functional programming at the Radboud University Nijmegen, The Netherlands. We have used Soccer-Fun in teaching during the past four years. We have also experience in using Soccer-Fun for pupils in secondary education. Soccer-Fun is sti...

W the arrival of the quadrennial soccer World Cup this summer, more than a billion people around the world are finding their television and computer screens filled with depictions of soccer halls. In Germany, where the World Cup matches are being played, soccer balls are tuming up on all kinds of merchandise, much of it having nothing to do with soccer. Although a soccer ball can be put togethe...

CONTEXT After years of focusing on the management of anterior cruciate ligament (ACL) injuries, the most common soccer-related injuries, the orthopedic community has concluded that soccer players have a wide range of variation in joint biomechanics and has thus started to focus research efforts on the morphological factors that might contribute to ACL trauma. One such factor is decreased hip-ro...

The purpose of this study was: 1) to collect baseline data on nutrient intake in order to advise athletes about nutrition practices that might enhance performance, and 2) to evaluate the dietary iron intake and blood iron status of Japanese collegiate soccer players. The subjects were 31 soccer players and 15 controls. Dietary information was obtained with a food frequency questionnaire. The me...

purpose although the contribution of physique and body composition in soccer performance was recognized, these parameters of physical fitness were not well-studied in adolescent players. aim of this study was to investigate physique and body composition across adolescence. methods male adolescents (n=297 aged 12.01–20.98 y), classified into nine one-year age-groups, child (control group, n=16 a...

UNLABELLED The objectives of this study were to examine the effects of a moderate intensity strength training on changes in critical velocity (CV), anaerobic running distance (D'), sprint performance and Yo-Yo intermittent running test (Yo-Yo IR1) performances. METHODS two recreational soccer teams were divided in a soccer training only group (SO; n = 13) and a strength and soccer training gr...

Background: Little information is available on the results of microfracture in competitive football (soccer) players. We aimed to evaluate the efficacy of this technique to restore joint function to a level that allows return to this popular highimpact sport. Methods: This article provides an overview of the basic science and the current published scientific evidence for articular cartilage rep...