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https://www.readbyqxmd.com/read/29623604/mental-fatigue-and-soccer-current-knowledge-and-future-directions
#1
Mitchell R Smith, Chris Thompson, Samuele M Marcora, Sabrina Skorski, Tim Meyer, Aaron J Coutts
Fatigue is a complex state with multiple physiological and psychological origins. However, fatigue in soccer has traditionally been investigated from a physiological perspective, with little emphasis on the cognitive demands of competition. These cognitive demands may induce mental fatigue, which could contribute to the fatigue-related performance decrements observed during and after soccer matches. Recent research investigating the relationship between mental fatigue and soccer-specific performance supports this suggestion...
April 5, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29599866/impact-of-official-matches-on-soccer-referees-power-performance
#2
Daniel Castillo, Javier Yanci, Jesús Cámara
The evaluation of match officials' neuromuscular performance is now an important consideration and the vertical jump test is considered suitable for assessing lower limb power, partly because it is directly related to refereeing. The aim of this study, therefore, was to determine the effect of soccer matches on match officials' vertical jump performance by assessing various biomechanical variables. Eighteen field referees (FRs) and 36 assistant referees (ARs) who officiated in 18 official matches participated in this study...
March 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29599862/fatigue-responses-in-various-muscle-groups-in-well-trained-competitive-male-players-after-a-simulated-soccer-game
#3
Dan Fransson, Jeppe Foged Vigh-Larsen, Ioannis G Fatouros, Peter Krustrup, Magni Mohr
We examined the degree of post-game fatigue and the recovery pattern in various leg and upper-body muscle groups after a simulated soccer game. Well-trained competitive male soccer players (n = 12) participated in the study. The players completed the Copenhagen Soccer Test, a 2 x 45 min simulated soccer protocol, following baseline measures of maximal voluntary contractions of multiple muscle groups and systemic markers of muscle damage and inflammation at 0, 24 and 48 h into recovery. All muscle groups had a strength decrement ( p ≤ 0...
March 2018: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29563884/symptoms-of-anxiety-and-depression-in-young-athletes-using-the-hospital-anxiety-and-depression-scale
#4
Stephanie Weber, Christian Puta, Melanie Lesinski, Brunhild Gabriel, Thomas Steidten, Karl-Jürgen Bär, Marco Herbsleb, Urs Granacher, Holger H W Gabriel
Elite young athletes have to cope with multiple psychological demands such as training volume, mental and physical fatigue, spatial separation of family and friends or time management problems may lead to reduced mental and physical recovery. While normative data regarding symptoms of anxiety and depression for the general population is available (Hinz and Brähler, 2011), hardly any information exists for adolescents in general and young athletes in particular. Therefore, the aim of this study was to assess overall symptoms of anxiety and depression in young athletes as well as possible sex differences...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29549745/exploring-the-effects-of-mental-and-muscular-fatigue-in-soccer-players-performance
#5
Diogo Coutinho, Bruno Gonçalves, Del P Wong, Bruno Travassos, Aaron J Coutts, Jaime Sampaio
This study examined the effects of induced mental and muscular fatigue on soccer players' physical activity profile and collective behavior during small-sided games (SSG). Ten youth soccer players performed a 5vs5 SSG under three conditions: a) control, playing without any previous activity; b) muscular fatigue, playing after performing a repeated change-of-direction task; c) mental fatigue, playing after completing a 30 min Stroop color-word task. Players' positional data was used to compute time-motion and tactical-related variables...
April 2018: Human Movement Science
https://www.readbyqxmd.com/read/29541136/physical-and-physiological-demands-of-futsal
#6
REVIEW
Naser Naser, Ajmol Ali, Paul Macadam
Futsal, the 5-a-side version of soccer (i.e. 1 goalkeeper and 4 outfield players), was introduced in 1930 and continues to grow in popularity around the world. Competitive games comprise of two 20-min periods of high-intensity and intermittent activities requiring substantial physical, tactical, and technical efforts from the players. A greater understanding of the physical and skill requirements will aid the development of futsal and enable practitioners to undertake appropriate training regimes for the demands of the sport...
December 2017: Journal of Exercise Science and Fitness
https://www.readbyqxmd.com/read/29514736/corrigendum-to-monitoring-training-load-and-fatigue-in-soccer-players-with-physiological-markers-physiol-behav-181-2017-86-94
#7
L Djaoui, M Haddad, K Chamari, A Dellal
No abstract text is available yet for this article.
March 4, 2018: Physiology & Behavior
https://www.readbyqxmd.com/read/29506307/effect-of-muscular-strength-asymmetries-and-fatigue-on-kicking-performance-in-soccer-players
#8
Tomas Maly, Dai Sugimoto, Jana Izovska, Frantisek Zahalka, Lucia Mala
The aim of this study was to determine the effect of muscular strength, strength asymmetries, and fatigue on the speed and accuracy of an instep kick in soccer players. We measured ball velocity (BV) and kicking accuracy (KA) in the preferred (PL) and non-preferred leg (NPL) before (PRE) and after (POST) physical load in the PL. Maximum peak muscle torque of the knee extensors and flexors in the PL and NPL as well as ipsilateral knee flexors and knee extensors ratio (H:Q ratio) for both legs were assessed. BV was significantly decreased in POST physical load (5...
March 5, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29485920/age-related-differences-in-functional-hamstring-quadriceps-ratio-following-soccer-exercise-in-female-youth-players-an-injury-risk-factor
#9
Mark De Ste Croix, Abigail Priestley, Rhodri Lloyd, Jon Oliver
PURPOSE: Fatigue negatively alters dynamic knee control, and the functional hamstring/quadriceps ratio (H/QFUNC ) plays an important role in stabilizing the joint. The aim of this study was to investigate the influence of soccer-specific exercise on H/QFUNC in under (U) 13-, U15-, and U17-year-old female soccer players. METHODS: A total of 36 female players performed concentric and eccentric actions of the hamstrings at 60°, 120°, and 180°/s before and after an age group-specific field-based soccer protocol...
February 27, 2018: Pediatric Exercise Science
https://www.readbyqxmd.com/read/29420135/impaired-sleep-mediates-the-negative-effects-of-training-load-on-subjective-well-being-in-female-youth-athletes
#10
Andrew Watson, Stacey Brickson
BACKGROUND: Although increased training load (TL) and impaired sleep are associated with decreases in subjective well-being in adult athletes, these relationships among female youth athletes are unclear. It is unknown whether the effects of sleep and TL on well-being are independent or whether alterations in sleep mediate the effects of TL on subjective well-being. HYPOTHESIS: Sleep and TL exert independent effects on subjective well-being among youth athletes, although alterations in sleep mediate a significant portion of the effect of TL on well-being in female youth athletes...
February 1, 2018: Sports Health
https://www.readbyqxmd.com/read/29376416/influence-of-well-being-variables-and-recovery-state-in-physical-enjoyment-of-professional-soccer-players-during-small-sided-games
#11
Okba Selmi, Bruno Gonçalves, Ibrahim Ouergui, Jaime Sampaio, Anissa Bouassida
This study aimed to assess the effects of the total quality of recovery and well-being indices (self-ratings of sleep during the preceding night, stress, fatigue and delayed onset muscle soreness) on rating of perceived exertion (RPE) and physical enjoyment (PE) during small-sided games. A total of 20 professional soccer players (25 ± 0.8 years) completed four 5-a-side game sessions of 25-min duration each (4 × 4 min work with 3-min passive recovery in-between). All variables were collected before each game session with the exception of RPE and Physical Activity Enjoyment Scale that were collected after...
January 28, 2018: Research in Sports Medicine
https://www.readbyqxmd.com/read/29345537/post-match-perceived-exertion-feeling-and-wellness-in-professional-soccer-players
#12
Mohamed Saifeddin Fessi, Wassim Moalla
PURPOSE: The aim of this study was to assess post-match perceived exertion, feeling and wellness according to the match outcome (winning, drawing or losing) in professional soccer players. METHODS: Twelve outfield players were followed during 52 official matches where the outcomes (win, draw or lose) were noted. Following each match players completed both a 10-point scale rating of perceived exertion (RPE) and an 11-point scale rating of perceived feeling. Rating of perceived sleep quality, stress, fatigue and muscle soreness were collected separately on a 7-point scale the day following each match...
January 18, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29339989/association-between-match-activity-variables-measures-of-fatigue-and-neuromuscular-performance-capacity-following-elite-competitive-soccer-matches
#13
Ian Varley, Ryan Lewin, Robert Needham, Robin T Thorpe, Ross Burbeary
The aim of the study was to assess the relationships between match activity variables, subsequent fatigue and neuromuscular performance capacity in elite soccer players. Subjects (n = 10) were professional soccer players participating in the English Championships. Match activity variables and markers of fatigue status were measured before and following two matches. Creatine kinase (CK) and muscle soreness were measured at baseline, immediately following, as well as 40 and 64 h post-match. Countermovement jump performance and perceived ratings of wellness were measured at baseline, then 40 and 64 h post-match...
December 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/29337832/comparison-of-step-by-step-kinematics-in-repeated-30m-sprints-in-female-soccer-players
#14
Roland van den Tillaar
The aim of this study was to compare kinematics in repeated 30m sprints in female soccer players. Seventeen subjects performed seven 30m sprints every 30s in one session. Kinematics were measured with an infrared contact mat and laser gun, and running times with an electronic timing device. The main findings were that sprint times increased in the repeated sprint ability test. The main changes in kinematics during the repeated sprint ability test were increased contact time and decreased step frequency, while no change in step length was observed...
January 4, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29283689/physiological-and-physical-responses-according-to-the-game-surface-in-a-soccer-simulation-protocol
#15
Jorge Lopez-Fernandez, Javier Sánchez-Sánchez, Jorge García-Unanue, José Luis Felipe, Enrique Colino-Acevedo, Leonor Gallardo
PURPOSE: Recent studies have shown that soccer player's responses are similar on natural grass (NG) and artificial turf (AT), but they did not control the mechanical properties of these surfaces. This work aimed to analyse the influence of the game surface on amateur soccer player's physical and physiological responses using a soccer simulation protocol (SSP). METHODS: Sixteen amateur players performed three bouts of the SSP on AT and NG. The mechanical properties of both surfaces were recorded...
December 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29243038/what-performance-analysts-need-to-know-about-research-trends-in-association-football-2012-2016-a-systematic-review
#16
REVIEW
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
https://www.readbyqxmd.com/read/29216703/-effect-of-sports-training-in-angular-compartment-of-the-lower-limbs-in-children-footballers-aged-11-to-12-years-old
#17
J Burboa, M Bahamonde, M Inostroza, P Lillo, M Barahona, M Palet, J Hinzpeter
Anterior Cruciate Ligament (ACL) injury is an important cause of days lost in athletes. Most ACL injuries are non-contact and are associated with biomechanical risk factors that increase tension in the ACL: increased knee valgus (KV) and hip flexion (HF) and decreased flexion of knee (KF). Muscle around the knee contributes to knee stability, so fatigue produced by exercise could alter knee balance, increasing LCA tension. The aim of the study is to determine the angular behavior before and after a physical load for CF, RR and RV in children born in 2002-2003...
May 2017: Acta Ortopédica Mexicana
https://www.readbyqxmd.com/read/29184275/effects-of-lower-extremity-injuries-on-aerobic-exercise-capacity-anaerobic-power-and-knee-isokinetic-muscular-function-in-high-school-soccer-players
#18
Kwang-Jun Ko, Gi-Chul Ha, Dong-Woo Kim, Seol-Jung Kang
[Purpose] The study investigated the effects of lower extremity injuries on aerobic exercise capacity, anaerobic power, and knee isokinetic muscular function in high school soccer players. [Subjects and Methods] The study assessed U High School soccer players (n=40) in S area, South Korea, divided into 2 groups: a lower extremity injury group (n=16) comprising those with knee and ankle injuries and a control group (n=24) without injury. Aerobic exercise capacity, anaerobic power, and knee isokinetic muscular function were compared and analyzed...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29118716/etiology-and-recovery-of-neuromuscular-fatigue-following-competitive-soccer-match-play
#19
Callum G Brownstein, Jack P Dent, Paul Parker, Kirsty M Hicks, Glyn Howatson, Stuart Goodall, Kevin Thomas
Aim: Previous research into the etiology of neuromuscular fatigue following competitive soccer match-play has primarily focused on peripheral perturbations, with limited research assessing central nervous system function in the days post-match. The aim of the present study was to examine the contribution and time-course of recovery of central and peripheral factors toward neuromuscular fatigue following competitive soccer match-play. Methods: Sixteen male semi-professional soccer players completed a 90-min soccer match...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29099680/pre-exercise-infrared-photobiomodulation-therapy-810%C3%A2-nm-in-skeletal-muscle-performance-and-postexercise-recovery-in-humans-what-is-the-optimal-power-output
#20
Adriano Rodrigues de Oliveira, Adriane Aver Vanin, Shaiane Silva Tomazoni, Eduardo Foschini Miranda, Gianna Móes Albuquerque-Pontes, Thiago De Marchi, Vanessa Dos Santos Grandinetti, Paulo Roberto Vicente de Paiva, Treice Beatriz Gonçalves Imperatori, Paulo de Tarso Camillo de Carvalho, Jan Magnus Bjordal, Ernesto Cesar Pinto Leal-Junior
BACKGROUND: Photobiomodulation therapy (PBMT) has recently been used to alleviate postexercise muscle fatigue and enhance recovery, demonstrating positive results. A previous study by our research group demonstrated the optimal dose for an infrared wavelength (810 nm), but the outcomes could be optimized further with the determination of the optimal output power. OBJECTIVE: The aim of the present study was to evaluate the effects of PBMT (through low-level laser therapy) on postexercise skeletal muscle recovery and identify the best output power...
November 2017: Photomedicine and Laser Surgery
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