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https://www.readbyqxmd.com/read/29781940/alpha-actinin-3-r577x-polymorphism-influences-muscle-damage-and-hormonal-responses-after-a-soccer-game
#1
Daniel B Coelho, Eduardo M Pimenta, Izinara C Rosse, Christiano Veneroso, Guilherme De Azambuja Pussieldi, Lenice K Becker, Emerson C Oliveira, Maria R S Carvalho, Emerson Silami-Garcia
Coelho, DB, Pimenta, EM, Rosse, IC, Veneroso, C, Pussieldi, GDA, Becker, LK, De Oliveira, EC, Carvalho, MRS, and Silami-Garcia, E. Alpha-actinin-3 R577X polymorphism influences muscle damage and hormonal responses after a soccer game. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to evaluate indicators of muscle damage and hormonal responses after soccer matches and its relation to alpha-actinin-3 (ACTN3) gene expression (XX vs. RR/RX), considering that the R allele produces alpha-actinin-3 and provides greater muscle strength and power...
May 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29776815/strength-recovery-after-anterior-cruciate-ligament-reconstruction-with-quadriceps-tendon-versus-hamstring-tendon-autografts-in-soccer-players-a-randomized-controlled-trial
#2
Jose Luis Martin-Alguacil, Manuel Arroyo-Morales, Jose Luis Martín-Gomez, Isidro Manuel Monje-Cabrera, Juan F Abellán-Guillén, Francisco Esparza-Ros, Mario Lozano Lozano, Irene Cantarero-Villanueva
BACKGROUND: The comparison between HT and QT grafts in strength recovery and function after an ACLR is scarce in the literature. METHODS: A total of 56 participants were enrolled in this randomized controlled trial and placed into two groups: HT or QT. The hamstring/quadriceps (H/Q) ratio was the primary end-point measured with a Genu-3 dynamometer. Peak torque, functional assessment (Lysholm knee scoring scale and Cincinnati Knee Rating System), and anteroposterior laxity (KT-2000™ arthrometer) were also assessed...
May 15, 2018: Knee
https://www.readbyqxmd.com/read/29769822/maturity-status-strongly-influences-the-relative-age-effect-in-international-elite-under-9-soccer
#3
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/29765348/numerical-affordance-influences-action-execution-a-kinematic-study-of-finger-movement
#4
Rosa Rugani, Sonia Betti, Luisa Sartori
Humans represent symbolic numbers as oriented from left to right: the mental number line (MNL). Up to now, scientific studies have mainly investigated the MNL by means of response times. However, the existing knowledge on the MNL can be advantaged by studies on motor patterns while responding to a number. Cognitive representations, in fact, cannot be fully understood without considering their impact on actions. Here we investigated whether a motor response can be influenced by number processing. Participants seated in front of a little soccer goal...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29758569/relation-between-iliopsoas-cross-sectional-area-and-kicked-ball-speed-in-soccer-players
#5
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
#6
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
#7
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
#8
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/29740792/monitoring-of-post-match-fatigue-in-professional-soccer-welcome-to-the-real-world
#9
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/29740384/heading-frequency-is-more-strongly-related-to-cognitive-performance-than-unintentional-head-impacts-in-amateur-soccer-players
#10
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/29738285/futsal-task-constraints-promote-transfer-of-passing-skill-to-soccer-task-constraints
#11
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/29736342/validity-and-reliability-of-the-wimu-inertial-device-for-the-assessment-of-the-vertical-jump
#12
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
#13
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
#14
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/29704189/periodic-health-examination-and-injury-prediction-in-professional-football-soccer-theoretically-the-prognosis-is-good
#15
Tom Hughes, Jamie C Sergeant, Danielle A van der Windt, Richard Riley, Michael J Callaghan
In professional soccer and other elite sports, medical and performance screening of athletes (also termed periodic health examination or PHE) is common practice. The purposes of this are: (1) to assist in identifying prevalent conditions that may be a threat to safe participation, (2) to assist in setting benchmark targets for rehabilitation or performance purposes and (3) to assist clinicians in determining which athletes may be at risk of future injury and selecting appropriate injury prevention strategies to reduce the perceived risk...
April 27, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29702519/new-tool-to-control-and-monitor-weighted-vest-training-load-for-sprinting-and-jumping-in-soccer
#16
Jorge Carlos-Vivas, Tomás T Freitas, Miguel Cuesta, Jorge Perez-Gomez, Moisés De Hoyo, Pedro E Alcaraz
Carlos-Vivas, J, Freitas, TT, Cuesta, M, Perez-Gomez, J, De Hoyo, M, and Alcaraz, PE. New tool to control and monitor weighted vest training load for sprinting and jumping in soccer. J Strength Cond Res XX(X): 000-000, 2018-The purpose of this study was to develop 2 regression equations that accurately describe the relationship between weighted vest loads and performance indicators in sprinting (i.e., maximum velocity, Vmax) and jumping (i.e., maximum height, Hmax). Also, this study aimed to investigate the effects of increasing the load on spatio-temporal variables and power development in soccer players and to determine the "optimal load" for sprinting and jumping...
April 26, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29702518/team-dynamics-running-and-skill-related-performances-of-brazilian-u11-to-professional-soccer-players-during-official-matches
#17
Luiz H Palucci Vieira, Rodrigo Aquino, Felipe A Moura, Ricardo M L de Barros, Vitor M Arpini, Lucas P Oliveira, Bruno L S Bedo, Paulo R P Santiago
Palucci Vieira, LH, Aquino, R, Moura, FA, Barros, RMLd, Arpini, VM, Oliveira, LdP, Bedo, BLdS, and Pereira Santiago, PR. Team dynamics, running, and skill-related performances of Brazilian U11 to professional soccer players during official matches. J Strength Cond Res XX(X): 000-000, 2018-Analyses of movements during soccer competition have been used previously to help develop conditioning programs. However, this has not been extensively studied in youth populations. Therefore, the purposes of this study were to examine (1) dynamics of collective tactical movements, (2) running, and (3) skill-related performances during soccer matches disputed by children to senior players...
April 26, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29702517/assessing-repeated-sprint-ability-in-division-i-collegiate-women-soccer-players
#18
Robert G Lockie, Tricia M Liu, Alyssa A Stage, Adrina Lazar, Dominic V Giuliano, Jillian M Hurley, Ibett A Torne, Megan D Beiley, Samantha A Birmingham-Babauta, John J Stokes, Fabrice G Risso, DeShaun L Davis, Matthew R Moreno, Ashley J Orjalo
Lockie, RG, Liu, TM, Stage, AA, Lazar, A, Giuliano, DV, Hurley, JM, Torne, IA, Beiley, MD, Birmingham-Babauta, SA, Stokes, JJ, Risso, FG, Davis, DL, Moreno, MR, and Orjalo, AJ. Assessing repeated-sprint ability in Division I collegiate women soccer players. J Strength Cond Res XX(X): 000-000, 2018-Repeated-sprint ability (RSA) is a key component of soccer, and is the capacity to repeatedly produce near-maximal to maximal sprints with short recovery periods. Repeated-sprint ability has received little analysis in collegiate women soccer players...
April 26, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29702162/eeg-alpha-activity-during-imagining-creative-moves-in-soccer-decision-making-situations
#19
Andreas Fink, Christian Rominger, Mathias Benedek, Corinna M Perchtold, Ilona Papousek, Elisabeth M Weiss, Anna Seidel, Daniel Memmert
This study investigated task-related changes of EEG alpha power while participants were imagining creative moves in soccer decision-making situations. After presenting brief video clips of a soccer scene, participants had to imagine themselves as the acting player and to think either of a creative/original or an obvious/conventional move (control condition) that might lead to a goal. Performance of the soccer task generally elicited comparatively strong alpha power decreases at parietal and occipital sites, indicating high visuospatial processing demands...
April 24, 2018: Neuropsychologia
https://www.readbyqxmd.com/read/29697215/variability-of-activity-profile-during-medium-sided-games-in-professional-soccer
#20
Vincenzo Rago, João R Silva, Magni Mohr, Daniel Barreira, Peter Krustrup, António N Rebelo
BACKGROUND: In Southern European countries it is very frequent to perform medium-sized games (MSG) as last training drill. We analyzed the individual variability and changes in activity patterns during MSG throughout the preseason. METHODS: Activity profile during MSGs (10v10+goalkeepers, duration: 10-min, field length: 50 m, width: 90 m, area per player: 204.5 m2) was quantified using a GPS in 14 professional male players (6 defenders, 5 midfielders 5 and attackers)...
April 24, 2018: Journal of Sports Medicine and Physical Fitness
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