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Soccer substitutions

Amelia Joanna Hanford Arundale, Holly Jacinda Silvers-Granelli, Lynn Snyder-Mackler
Background: Little is known about career length after anterior cruciate ligament (ACL) reconstruction in Major League Soccer (MLS), the top men's professional soccer league in the United States. Further, it is unspecified whether athletes returning to soccer after ACL reconstruction are at a higher risk for injuries, beyond new knee injuries. Purpose: To examine career length and the incidence of lower extremity injuries in MLS athletes after ACL reconstruction in comparison with age-matched controls...
January 2018: Orthopaedic Journal of Sports Medicine
Hugo Sarmento, Filipe Manuel Clemente, Duarte Araújo, Keith Davids, Allistair McRobert, António Figueiredo
BACKGROUND: Evolving patterns of match analysis research need to be systematically reviewed regularly since this area of work is burgeoning rapidly and studies can offer new insights to performance analysts if theoretically and coherently organized. OBJECTIVE: The purpose of this paper was to conduct a systematic review of published articles on match analysis in adult male football, identify and organize common research topics, and synthesize the emerging patterns of work between 2012 and 2016, according to the Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) guidelines...
April 2018: Sports Medicine
Fabrice G Risso, Farzad Jalilvand, Ashley J Orjalo, Matthew R Moreno, Deshaun L Davis, Samantha A Birmingham-Babauta, John J Stokes, Alyssa A Stage, Tricia M Liu, Dominic V Giuliano, Adrina Lazar, Robert G Lockie
NCAA soccer features different substitution rules compared to FIFA-sanctioned matches, with a greater availability of players who can enter the game. This could influence the physiological characteristics of the field position starters (ST) and non-starters (NST) within a collegiate women's team, which has not been previously analyzed. Thus, 22 field players from the same Division I women's soccer squad completed: vertical and standing broad jumps; 30-meter (m) sprint (0-5, 0-10, 0-30 m intervals); pro-agility and 60-yard shuttle; and the Yo-Yo Intermittent Recovery Test Level 1...
2017: International Journal of Exercise Science
Michał Boraczyński, Henryk Sozański, Tomasz Boraczyński
The aim was to examine the effects of a series of on-field proprioceptive-coordinative (P-C) exercises on motor performance (MP) in prepubertal soccer players. Fifty-three male soccer players aged 10.1-11.8 years were randomized among two experimental programs receiving P-C training (P-CT; n = 26) or regular training (RT; n = 27). A control group (C; n = 22) consisted of age-matched (10.3-11.9 years) cohorts not involved in any regular physical activity. Both experimental groups completed an identical 12-month comprehensive soccer program except training in P-CT was modified to substitute small-sided conditioning games with 24 multi-mode P-C exercises with modulated exercise intensity (every 8-9 weeks based on predicted HRmax)...
March 31, 2017: Journal of Strength and Conditioning Research
Nesli Ersoy, Gulgun Ersoy, Mehmet Kutlu
BACKGROUND: The purpose of the study is to determine and compare the hydration status with different methods and determine fluid intake, dehydration percentages and sweat rate of 26 young male soccer players (15 ± 1.2 years) before an important competition. More specifically, the study aims at validating the urine strip and advising the players to use it as an easy and practical method. METHODS: Measurements of urine analysis were taken from the urine sample of the participants before breakfast and conducted for 3 consecutive days before the competition...
2016: Journal of the International Society of Sports Nutrition
Eoin M Everard, Andrew J Harrison, Mark Lyons
Everard, EM, Harrison, AJ, and Lyons, M. Examining the relationship between the functional movement screen and the landing error scoring system in an active, male collegiate population. J Strength Cond Res 31(5): 1265-1272, 2017-In recent years, there has been an increasing focus on movement screening as the principal aspect of preparticipation testing. Two of the most common movement screening tools are the Functional Movement Screen (FMS) and the Landing Error Scoring System (LESS). Several studies have examined the reliability and validity of these tools, but so far, there have been no studies comparing the results of these 2 screening tools against each other...
May 2017: Journal of Strength and Conditioning Research
Robert G Lockie, Matthew R Moreno, Adrina Lazar, Ashley J Orjalo, Dominic V Giuliano, Fabrice G Risso, DeShaun L Davis, Jeff B Crelling, John R Lockwood, Farzad Jalilvand
Lockie, RG, Moreno, MR, Lazar, A, Orjalo, AJ, Giuliano, DV, Risso, FG, Davis, DL, Crelling, JB, Lockwood, JR, and Jalilvand, F. The physical and athletic performance characteristics of Division I collegiate female soccer players by position. J Strength Cond Res 32(2): 334-343, 2018-Playing positions in soccer can exhibit different movement demands during a match, contributing to variations in physical and performance characteristics. National Collegiate Athletic Association (NCAA) soccer features different substitution rules when compared to FIFA-sanctioned matches, which could influence each players' characteristics...
February 2018: Journal of Strength and Conditioning Research
Liam D Harper, Melissa Fothergill, Daniel J West, Emma Stevenson, Mark Russell
Qualitative research investigating soccer practitioners' perceptions can allow researchers to create practical research investigations. The extra-time period of soccer is understudied compared to other areas of soccer research. Using an open-ended online survey containing eleven main and nine sub questions, we gathered the perceptions of extra-time from 46 soccer practitioners, all working for different professional soccer clubs. Questions related to current practices, views on extra-time regulations, and ideas for future research...
2016: PloS One
Stuart W G Derbyshire, Ilana Angel, Richard Bushell
The rules of soccer dictate that play, once halted, cannot continue if a player is injured. Players may take advantage of this rule by feigning injury to preserve beneficial match positions. Thirty Euro 2008 matches, 90 Premier League matches and 63 World Cup 2010 matches were reviewed for the timing and severity of injuries. The number of injuries was compared between teams that benefited from stopping the game and those that did not benefit. The number of low-level injuries, not resulting in substitution or subsequent problems, was directly compared for Benefit and Non-Benefit teams for each 15-min period following kick off...
2016: Frontiers in Psychology
Carlos Lago-Peñas, Maite Gómez-López
Referees have discretion over the addition of extra time at the end of the soccer game to compensate for lost time due to unusual stoppages. This study assesses if referees favor big teams by shortening close games where the big team is ahead and lengthening close games where the big team is behind. The sample comprises all 380 matches in the Spanish La Liga during the 2014-2015 season. The dependent variable was the extra time the referee decides to add to the second half. The independent variables were the score difference, opponent team's level of play, yellow cards, red cards, player substitutions, average attendance, and fouls committed...
April 2016: Perceptual and Motor Skills
Richard Pollard, Miguel A Gómez
Home advantage in seven American college team sports (baseball, basketball, football, hockey, lacrosse, soccer and women's basketball) was compared with professional leagues in the United States for the same sports and for the same time period. A total of 81,063 college games and 22,477 professional games were analyzed for the four seasons 2006-07 to 2009-10. There was a significant home advantage, as measured by home winning percentage, in all sports, both college and professional. The overall home advantage in college sports was significantly greater than in professional sports (p<0...
September 2015: Collegium Antropologicum
Adesola Olumide, Kemisola Ajide
BACKGROUND: The study was conducted to determine the incidence and risk factors associated with injuries among adolescents participating in an amateur soccer tournament in Ibadan, Nigeria. METHODS: A prospective study was conducted among 90 participants (66 players and 24 substitutes) from six all-male teams with each team comprising 11 players. A total of six matches, each lasting 60 minutes (132 player-hours) were played in the tournament. Players were observed during all matches and followed up for up to two weeks after the final match...
September 2016: Journal of Sports Medicine and Physical Fitness
Simon Görtz, Riley J Williams, Wayne K Gersoff, William D Bugbee
Knee injuries are common in football, frequently involving damage to the meniscus and articular cartilage. These injuries can cause significant disability, result in loss of playing time, and predispose players to osteoarthritis. Osteochondral allografting is an increasingly popular treatment option for osteoarticular lesions in athletes. Osteochondral allografts provide mature, orthotopic hyaline cartilage on an osseous scaffold that serves as an attachment vehicle, which is rapidly replaced via creeping substitution, leading to reliable graft integration that allows for simplified rehabilitation and accelerated return to sport...
January 2012: Cartilage
Christopher Carling, Franck Le Gall, Alan McCall, Mathieu Nédélec, Gregory Dupont
Squad management, injury and physical, tactical and technical match performance were investigated in a professional soccer team across five consecutive league seasons (2008-2013, 190 league games) with specific focus on a championship-winning season (2010/11). For each player, match participation and time-loss injuries were recorded, the latter prospectively diagnosed by the team's physician. Defending and attacking tactical and technical performance indicators investigated included ball possession and possession in opponents' half, passes, forward passes, completed passes and forward passes, crosses and completed crosses, goal attempts and goal attempts on target, successful final third entries, free-kicks and 50/50 duels won/lost...
2015: European Journal of Sport Science
Barnett S Frank, Johna Register-Mihalik, Darin A Padua
OBJECTIVES: Evaluate the effect of a anterior cruciate ligament injury prevention program coaching workshop on elite-level youth soccer coaches' behavioral determinants to implement a injury prevention program and describe coaches' subsequent injury prevention program implementation compliance. DESIGN: Descriptive study. METHODS: We evaluated a soccer club's coaches' behavioral determinants regarding injury prevention programming implementation before and after a coaching workshop using pre- and post-workshop surveys...
July 2015: Journal of Science and Medicine in Sport
José E Lopes, David M Jacobs, David Travieso, Duarte Araújo
This study addresses the utility of the kinematics of penalty takers for goalkeepers in association football. Twelve professional and semi-professional players shot to one side of the goal with (deceptive condition) or without (non-deceptive condition) simulating a shot to the opposite side. The body kinematics of the penalty takers were registered with motion-capture apparatus. Correlation and regression techniques were used to determine the relation between the shot direction and aspects of the penalty taker's kinematics at different moments...
August 2014: Human Movement Science
Jason D Vescovi, Terence G Favero
PURPOSE: To quantify the locomotor demands of college female soccer matches and compare the relative proportion of distances in specified velocity bands between players completing an entire half with substitutes. METHODS: College female soccer players (n = 113) were assessed during a regular-season match using global positioning system technology. An ANCOVA was used to compare the locomotor characteristics for positions and substitutes, adjusting for duration played...
May 2014: International Journal of Sports Physiology and Performance
Rodrigo Ramírez-Campillo, César Meylan, Cristian Alvarez, Carlos Henríquez-Olguín, Cristian Martínez, Rodrigo Cañas-Jamett, David C Andrade, Mikel Izquierdo
Integrating specific training methods to improve explosive actions and endurance in youth soccer is an essential part of players' development. This study investigated the efficiency of short-term vertical plyometric training program within soccer practice to improve both explosive actions and endurance in young soccer players. Seventy-six players were recruited and assigned either to a training group (TG; n = 38; 13.2 ± 1.8 years) or a control group (CG; n = 38; 13.2 ± 1.8 years) group. All players trained twice per week, but the TG followed a 7-week plyometric program implemented within soccer practice, whereas the CG followed regular practice...
May 2014: Journal of Strength and Conditioning Research
Nikolaos E Koundourakis, Nikolaos Androulakis, Eirini C Spyridaki, Elias Castanas, Niki Malliaraki, Christos Tsatsanis, Andrew N Margioris
OBJECTIVE: To examine the effects of three seasonal training programs, largely different in strength volume, on androgen levels and performance parameters in soccer players. DESIGN: Sixty-seven soccer players, members of three different professional teams, participated in the study. Strength intensity of the training programs were assessed as high (for Team-A, n=23), moderate (for Team-B, n=22), and low (for Team-C, n=22). Blood samples were analyzed for total-testosterone, free-testosterone, and the metabolic product of activate testosterone 3a-androstendiol glucuronade (3a-Diol-G)...
January 2014: Hormones: International Journal of Endocrinology and Metabolism
Quirin Söhnlein, Erich Müller, Thomas L Stöggl
Plyometric training (PT) programs are widely used to improve explosive actions in soccer players of various ages, although there is debate about optimal training duration and time course of improvement. Twenty-two early to mid-puberty elite soccer players were assigned to a control group (CG, n = 10, regular soccer training) or a plyometric training group (PTG, n = 12, regular soccer training substituted with 2 PT sessions each week). Both groups trained for 16 weeks during the in-season period. Control group performed only tests at baseline and after intervention, whereas PTG performed additional tests after 4, 8, and 12 weeks...
August 2014: Journal of Strength and Conditioning Research
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