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https://www.readbyqxmd.com/read/29772188/hamstring-and-ankle-flexibility-deficits-are-weak-risk-factors-for-hamstring-injury-in-professional-soccer-players-a-prospective-cohort-study-of-438-players-including-78-injuries
#1
Nicol van Dyk, Abdulaziz Farooq, Roald Bahr, Erik Witvrouw
BACKGROUND: Hamstring injuries remain a significant injury burden in sports such as soccer that involve high-speed running. It has repeatedly been identified as the most common noncontact injury in elite male soccer, representing 12% of all injuries. As the incidence of hamstring injuries remains high, investigations are aimed at better understanding how to prevent hamstring injuries. Stretching to improve flexibility is commonly used in elite-level sports, but risk factor studies have reported contradicting results, leading to unclear conclusions regarding flexibility as a risk factor for hamstring injuries...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29769822/maturity-status-strongly-influences-the-relative-age-effect-in-international-elite-under-9-soccer
#2
Lisa Müller, Josef Gehmaier, Christoph Gonaus, Christian Raschner, Erich Müller
The aim of the study was to assess the role of the relative age effect (RAE) and to investigate the influence of the biological maturity status on the RAE in international under-9 soccer. The birth dates of 222 male participants of the U9 Eurochampionship Soccer Tournament in Vienna in 2016 were analyzed and divided into four relative age quarters (Q1-Q4) and the biological maturity status was assessed with the age at peak height velocity (APHV) method. Based on the mean±standard deviation of the APHV, the athletes were divided into three groups of maturity: early, normal and late maturing...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29759008/thin-slices-of-athletes-nonverbal-behavior-give-away-game-location-testing-the-territoriality-hypothesis-of-the-home-game-advantage
#3
Philip Furley, Geoffrey Schweizer, Daniel Memmert
The present research investigated whether perceivers could detect who is playing at home or away in soccer matches based on thin slices of professional (Experiment 1) and amateur (Experiment 3) athletes' nonverbal behavior prior to the match and whether perceivers rated athletes playing at home relatively higher on behavioral dimensions (Experiments 2 and 3) linked to territoriality. In Experiment 1 ( N = 80), participants watched short videos depicting soccer players prior to a UEFA Champions League match and rated whether athletes were more likely to be playing at home or away...
April 2018: Evolutionary Psychology: An International Journal of Evolutionary Approaches to Psychology and Behavior
https://www.readbyqxmd.com/read/29758569/relation-between-iliopsoas-cross-sectional-area-and-kicked-ball-speed-in-soccer-players
#4
Taku Wakahara, Manabu Chiba
This study aimed to investigate the relationship between the maximal anatomical cross-sectional area (ACSA) of the iliopsoas muscle and ball speed in side-foot and instep kicks. The ACSA of the psoas major and iliacus was measured in 29 male collegiate soccer players by using magnetic resonance imaging. They performed maximal side-foot and instep kicks to a stationary ball. The kicked ball speed was measured with a high-speed camera. Ball speed in the side-foot and instep kicks was significantly correlated with body height (side-foot kick: r=0...
May 14, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29758508/the-efficacy-of-elastic-therapeutic-tape-variations-on-measures-of-ankle-function-and-performance
#5
Christopher Michael Brogden, Kelly Marrin, Richard Michael Page, Matt Greig
OBJECTIVES: To investigate the effects of different variations of elastic therapeutic taping (ETT) on tests used to screen for ankle injury risk and function. DESIGN: Randomized crossover. SETTING: Laboratory. PARTICIPANTS: Twelve professional male soccer players completed three experimental trials: No tape (NT), RockTape™ (RT), and Kinesio™ Tape (KT) applied to the ankle complex. OUTCOME MEASURES: Clinical and functional ankle screening tests were used to assess the effects of ETT on measures of joint position sense, postural stability and ground reaction forces...
April 23, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29746505/the-effects-of-short-term-detraining-and-retraining-on-physical-fitness-in-elite-soccer-players
#6
Chang Hwa Joo
PURPOSE: The aim of this study was to examine the effects of aerobic high-intensity training with reduced volume and training cessation on body composition and physical fitness after the end of season and the time required to recapture physical fitness with intensified retraining following two weeks of detraining in elite soccer players. METHOD: Twenty male semi-professional soccer players participated in this study. The soccer players were assigned to either a group that completed high-intensity aerobic training (HAT, n = 10) or to a detraining and retraining group (DHAT, n = 10) for a 5-week period immediately after the end of the season...
2018: PloS One
https://www.readbyqxmd.com/read/29746383/angle-specific-isokinetic-metrics-highlight-strength-training-needs-of-elite-youth-soccer-players
#7
Steven J Eustace, Richard M Page, Matt Greig
Eustace, SJ, Page, RM, and Greig, M. angle specific isokinetic metrics highlight strength training needs of elite youth soccer players. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to assess traditional and angle-specific isokinetic strength of eccentric knee flexors (eccKFs) and concentric knee extensors (conKEs) between senior professional and youth soccer players. Thirty-four male soccer players (17 senior and 17 youth) were recruited for bilateral assessments at 180, 270, and 60°·s...
May 2, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29745785/dose-response-relationship-between-training-load-and-changes-in-aerobic-fitness-in-professional-youth-soccer-players
#8
John F Fitzpatrick, Kirsty M Hicks, Philip R Hayes
PURPOSE: The aim of this study was to compare the dose-response relationship between, traditional arbitrary speed thresholds versus an individualised approach, with changes in aerobic fitness in professional youth soccer players. METHODS: Fourteen youth soccer players, completed a 1500 metre time trial to estimate maximal aerobic speed (km.h-1 , (MAS)) at the start and the end of a six week period. Training load was monitored on a daily basis during this study. External load measures were; total distance covered (TD), total acceleration and deceleration distance > 2m...
May 10, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29742748/planning-training-workload-in-football-using-small-sided-games-density
#9
Sebastien Sangnier, Thierry Cotte, Olivier Brachet, Jeremy Coquart, Claire Tourny
Sangnier, S, Cotte, T, Brachet, O, Coquart, J, and Tourny, C. Planning training workload in football using small-sided games density. J Strength Cond Res XX(X): 000-000, 2018-To develop the physical qualities, the small-sided games' (SSGs) density may be essential in soccer. Small-sided games are games in which the pitch size, players' number, and rules are different to those for traditional soccer matches. The purpose was to assess the relation between training workload and SSGs' density. The 33 densities data (41 practice games and 3 full games) were analyzed through global positioning system (GPS) data collected from 25 professional soccer players (80...
May 8, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29740792/monitoring-of-post-match-fatigue-in-professional-soccer-welcome-to-the-real-world
#10
Christopher Carling, Mathieu Lacome, Alan McCall, Gregory Dupont, Franck Le Gall, Ben Simpson, Martin Buchheit
Participation in soccer match-play leads to acute and transient subjective, biochemical, metabolic and physical disturbances in players over subsequent hours and days. Inadequate time for rest and regeneration between matches can expose players to the risk of training and competing whilst not entirely recovered. In professional soccer, contemporary competitive schedules can require teams to compete in excess of 60 matches over the course of the season with periods of fixture congestion occurring, prompting much attention from researchers and practitioners to the monitoring of fatigue and readiness to play...
May 8, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29740560/comparison-of-technical-and-physical-activities-between-8-vs-8-and-11-vs-11-games-in-young-korean-soccer-players
#11
Seong Hwan Oh, Chang Hwa Joo
The aims of this study were to examine the differences in technical aspects and physical demands between small-size games (SSG; 8 vs. 8) and regular-size games (RSG; 11 vs. 11) in young Korean soccer players. Seventy-nine young soccer players from 6 teams (U-12) volunteered to participate in the study. The players completed 4 games (2 SSG, 62×51 m, and 2 RSG, 80×54 m) in 2 days. Each game was filmed to evaluate technical actions. Physical demand variables were measured using global positioning system technology...
April 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29740384/heading-frequency-is-more-strongly-related-to-cognitive-performance-than-unintentional-head-impacts-in-amateur-soccer-players
#12
Walter F Stewart, Namhee Kim, Chloe Ifrah, Martin Sliwinski, Molly E Zimmerman, Mimi Kim, Richard B Lipton, Michael L Lipton
Objective: Compared to heading, unintentional head impacts (e.g., elbow to head, head to head, head to goalpost) in soccer are more strongly related to risk of moderate to very severe Central Nervous System (CNS) symptoms. But, most head impacts associated with CNS symptoms that occur in soccer are mild and are more strongly related to heading. We tested for a differential relation of heading and unintentional head impacts with neuropsychological (NP) test performance. Method: Active adult amateur soccer players were recruited in New York City and the surrounding areas for this repeated measures longitudinal study of individuals who were enrolled if they had 5+ years of soccer play and were active playing soccer 6+ months/year...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29739304/soccer-injury-movement-screen-sims-composite-score-is-not-associated-with-injury-among-semi-professional-soccer-players
#13
Robert McCunn, Karen Aus der Fünten, Matthew Whalan, John A Sampson, Tim Meyer
Study Design Prospective cohort. Background The association between movement quality and injury is equivocal. No soccer-specific movement assessment has been prospectively investigated in relation to injury risk. Objectives To investigate the association between a soccer-specific movement quality assessment and injury risk among semi-professional soccer players. Methods Semi-professional soccer players (n=306) from 12 clubs completed the Soccer Injury Movement Screen (SIMS) during the pre-season period. Individual training/match exposure and non-contact time loss injuries were recorded prospectively for the entirety of the 2016 season...
May 8, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29739301/sub-elite-football-players-with-hip-related-groin-pain-and-positive-flexion-adduction-internal-rotation-test-exhibit-distinct-biomechanical-differences-compared-with-the-asymptomatic-side
#14
Matthew G King, Adam I Semciw, Harvi F Hart, Anthony G Schache, Kane J Middleton, Josh J Heerey, Rintje Agricola, Kay M Crossley
Study Design Observational cross-sectional study. Background Hip-related groin pain is common in sub-elite football players and may be associated with altered hip biomechanics. Objectives To compare the hip biomechanics, bony hip morphology associated with femoroacetabular impingement (FAI) syndrome, and hip strength and range of motion between the symptomatic and asymptomatic limb of sub-elite football players with unilateral hip-related groin pain and a positive flexion adduction internal rotation test. Methods Fifteen sub-elite football (soccer) players with unilateral hip-related groin pain and a positive flexion adduction internal rotation test were recruited...
May 8, 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29738285/futsal-task-constraints-promote-transfer-of-passing-skill-to-soccer-task-constraints
#15
Luca Oppici, Derek Panchuk, Fabio Rubens Serpiello, Damian Farrow
This study investigated how learning a passing skill with futsal or soccer task constraints influenced transfer to a new task. Futsal (n = 24, 13.6 ± 1.2 years old, 7.0 ± 1.6 years of experience) and soccer (n = 24, 13.6 ± 1.2 years old, 6.8 ± 1.2 years of experience) players performed two 5v5 + goalkeeper modified games - a futsal-like task (small playing area with the futsal ball) and soccer-like task (large playing area with the soccer ball). Participants' passing accuracy and their orientation of attention were assessed during the two tasks...
May 8, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29736402/accuracy-of-anthropometric-equations-for-estimating-body-fat-in-professional-male-soccer-players-compared-with-dxa
#16
Juan R López-Taylor, Roberto G González-Mendoza, Alejandro Gaytán-González, Juan Antonio Jiménez-Alvarado, Marisol Villegas-Balcázar, Edtna E Jáuregui-Ulloa, Francisco Torres-Naranjo
Background: There are several published anthropometric equations to estimate body fat percentage (BF%), and this may prompt uncertainty about their application. Purpose: To analyze the accuracy of several anthropometric equations (developed in athletic [AT] and nonathletic [NAT] populations) that estimate BF% comparing them with DXA. Methods: We evaluated 131 professional male soccer players (body mass: 73.2 ± 8.0 kg; height: 177.5 ± 5...
2018: Journal of Sports Medicine (Hindawi Publishing Corporation)
https://www.readbyqxmd.com/read/29736342/validity-and-reliability-of-the-wimu-inertial-device-for-the-assessment-of-the-vertical-jump
#17
José Pino-Ortega, Javier García-Rubio, Sergio J Ibáñez
The aim of this study was to test the validity and reliability of the inertial device WIMU (Realtrack Systems SL, Almería, Spain) for the assessment of the vertical jump, counter movement jump (CMJ) and squat jump (SJ). Fifteen soccer players were evaluated in two identical sessions separated by one week. In each session, participants performed three jumps of each type. The flight time was quantified by the inertial device WIMU and by a force platform (Twin Plates; Globus Sport and Health Technologies LLC, Codogné, Italy) at the same time...
2018: PeerJ
https://www.readbyqxmd.com/read/29723200/longitudinal-motor-performance-development-in-early-adolescence-and-its-relationship-to-adult-success-an-8-year-prospective-study-of-highly-talented-soccer-players
#18
Daniel Leyhr, Augustin Kelava, Johannes Raabe, Oliver Höner
Several talent identification and development (TID) programs in soccer have implemented diagnostics to measure players' motor performance. Yet, there is a lack of research investigating the relationship between motor development in adolescence and future, adult performance. This longitudinal study analyzed the three-year development of highly talented young soccer players' speed abilities and technical skills and examined the relevance of this development to their adult success. The current research sample consisted of N = 1,134 players born between 1993 and 1995 who were selected for the German Soccer Association's TID program and participated in nationwide motor diagnostics (sprinting, agility, dribbling, ball control, shooting) four times between the Under 12 (U12) and Under 15 (U15) age class...
2018: PloS One
https://www.readbyqxmd.com/read/29721459/differences-between-the-sexes-in-athletes-body-composition-and-lower-limb-bioimpedance-values
#19
Gabriele Mascherini, Jorge Castizo-Olier, Alfredo Irurtia, Cristian Petri, Giorgio Galanti
Introduction: The differences between the sexes in body composition are well established, although sports activity at an elite level seems to reduce them. The aim of this study is a comparison of the sexes in terms of athletes' body composition with a three-compartment model and a localized bioimpedance analysis in elite soccer players. Methods: 18 female and 18 male elite soccer players of the same age were matched (female=26.2±2.4, male 26.9±2.5; p=0.87). An assessment of body composition was performed through the integration of anthropometrics parameters, skinfold thickness and bioimpedance data...
October 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29721458/tripled-semitendinosus-with-single-harvesting-is-as-effective-but-less-invasive-compared-to-standard-gracilis-semitendinosus-harvesting
#20
Luca Drocco, Daniele Camazzola, Riccardo Ferracini, Sebastien Lustig, Laura Ravera, Eugenio Graziano, Alessandro Massè, Alessandro Bistolfi
Introduction: The anterior cruciate ligament (ACL) reconstruction with pes anserinus tendons has been increasingly used throughout the last years. Although less invasive compared to other autologous grafts, a reduction of internal rotation and flexion strength after gracilis and semitendinosus harvesting has been reported. Harvesting one tendon instead of two from the pes anserinus can reduce the deficit of the knee flexor strength and improve the functional recover without weakening the reconstructed ligament...
October 2017: Muscles, Ligaments and Tendons Journal
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