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https://www.readbyqxmd.com/read/28060035/etiology-and-recovery-of-neuromuscular-fatigue-following-simulated-soccer-match-play
#1
Kevin Thomas, Jack Dent, Glyn Howatson, Stuart Goodall
PURPOSE: We profiled the etiology and recovery of neuromuscular fatigue post-simulated-soccer-match-play. METHODS: Fifteen semi-professional players completed a 90 min simulated soccer match. Pre-, immediately-post and at 24, 48 and 72 h participants completed a battery of neuromuscular, physical and perceptual tests. Perceived fatigue and muscle soreness were assessed via visual analogue scales. Maximum voluntary contraction (MVC) and twitch responses to electrical (femoral nerve) and magnetic (motor cortex) stimulation during isometric knee-extensor contractions and at rest were measured to assess central (voluntary activation, VA) and peripheral (quadriceps potentiated twitch force, Qtw,pot) fatigue, and responses to single and paired-magnetic stimuli were assessed to quantify corticospinal excitability and short-intracortical inhibition (SICI), respectively...
January 3, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28050927/energy-intake-and-expenditure-of-professional-soccer-players-of-the-english-premier-league-evidence-of-carbohydrate-periodization
#2
Liam Anderson, Patrick Orme, Robert J Naughton, Graeme L Close, Jordan Milsom, David Rydings, Andy O'Boyle, Rocco Di Michele, Julien Louis, Catherine Hambley, John Roger Speakman, Ryland Morgans, Barry Drust, James P Morton
In an attempt to better identify and inform the energy requirements of elite soccer players, we quantified the energy expenditure (EE) of players from the English Premier League (n=6) via the doubly labeled water method (DLW) over a 7-day in-season period. Energy intake (EI) was also assessed using food diaries, supported by the remote food photographic method and 24 h recalls. The 7-day period consisted of 5 training days (TD) and 2 match days (MD). Although mean daily EI (3186 ± 367 kcals) was not different from (P>0...
January 4, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/28031763/evolution-of-determinant-factors-of-repeated-sprint-ability
#3
Fernando Pareja-Blanco, Luis Suarez-Arrones, David Rodríguez-Rosell, Manuel López-Segovia, Pedro Jiménez-Reyes, Beatriz Bachero-Mena, Juan José González-Badillo
The aim of this study was to investigate the changes in the relationships between repeated sprint ability (RSA) and anthropometric measures as well as fitness qualities in soccer players. Twenty-one professional soccer players performed several anthropometric and physical tests including countermovement vertical jumps (CMJs), a straight-line 30 m sprint (T30), an RSA test (6 x 20 + 20 m with 20 s recovery), a progressive isoinertial loading test in a full squat, a Yo-Yo Intermittent Recovery Test Level-1 (YYIRT-1) and a 20 m shuttle run test (20mSRT)...
December 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28031189/nine-year-study-of-us-high-school-soccer-injuries-data-from-a-national-sports-injury-surveillance-programme
#4
Morteza Khodaee, Dustin W Currie, Irfan M Asif, R Dawn Comstock
BACKGROUND: Research on high school soccer injury epidemiology is sparse. AIM: To describe high school soccer injury rates, trends and patterns by type of athlete exposure (AE), position and sex. METHODS: This descriptive epidemiological study used data from a large national high school sports injury surveillance programme to describe rates and patterns of soccer-related injuries including concussion sustained from 2005/2006 to 2013/2014. Injury rates are calculated per 1000 AEs...
December 28, 2016: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/27940807/sex-based-differences-in-cognitive-deficits-and-symptom-reporting-among-acutely-concussed-adolescent-lacrosse-and-soccer-players
#5
Natalie K Sandel, Philip Schatz, Kenneth B Goldberg, Mary Lazar
BACKGROUND: Research on the acute effects of a concussion among lacrosse players is limited, and postconcussion patterns between male and female athletes have yet to be clearly established. Differences in the style of play and protective gear worn among male and female lacrosse players potentially confound a direct comparison of sex-based differences in this population. PURPOSE: To explore sex-based differences in postconcussive neurocognitive functioning and symptom reporting outcomes in concussed adolescent male and female lacrosse players compared with a group of soccer players...
December 9, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27930450/yo-yo-intermittent-recovery-test-level-2-and-its-relationship-to-other-typical-soccer-field-tests-in-female-collegiate-soccer-players
#6
Robert G Lockie, Farzad Jalilvand, Matthew R Moreno, Ashley J Orjalo, Fabrice G Risso, Sophia Nimphius
The ability to complete high-intensity running is essential for soccer. The Yo-Yo Intermittent Recovery Test Level 2 (YYIRT2) can measure this capacity, but there is limited information regarding this assessment in collegiate female soccer players. This study investigated the YYIRT2 as a measure of high-intensity running in this population, and its relationship to other soccer field tests. Twenty-one players from a Division I team were recruited. In addition to the YYIRT2, subjects completed linear (0-5, 0-10, 0-30 m sprint intervals) and change-of-direction (pro-agility and 60-yard shuttle) speed tests, as well as the YYIRT Level 1 (YYIRT1), to assess relationships with YYIRT2 via correlations (p < 0...
November 19, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27918668/the-influence-of-changes-in-acute-training-load-on-daily-sensitivity-of-morning-measured-fatigue-variables-in-elite-soccer-players
#7
Robin T Thorpe, Anthony J Strudwick, Martin Buchheit, Greg Atkinson, Barry Drust, Warren Gregson
PURPOSE: To determine the sensitivity of a range of potential fatigue measures to daily training load accumulated over the previous two, three and four days during a short in-season competitive period in elite senior soccer players (n=10). METHODS: Total high-speed running distance, perceived ratings of wellness (fatigue, muscle soreness, sleep quality), counter-movement jump height (CMJ), submaximal heart rate (HRex), post-exercise heart rate recovery (HRR) and heart rate variability (HRV: Ln rMSSD) were analysed during an in-season competitive period (17 days)...
December 5, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27906554/sleep-quality-and-high-intensity-interval-training-at-two-different-times-of-day-a-crossover-study-on-the-influence-of-the-chronotype-in-male-collegiate-soccer-players
#8
Jacopo A Vitale, Matteo Bonato, Letizia Galasso, Antonio La Torre, Giampiero Merati, Angela Montaruli, Eliana Roveda, Franca Carandente
The influence of the chronotype on the sleep quality in male collegiate soccer players in response to acute high intensity interval training (HIIT) performed at two different times of day was evaluated. The sleep quality was poorer in the morning-type than in the evening-type players after the evening HIIT session, whereas no significant changes in the sleep quality of the two chronotypes after the morning HIIT session was observed. The results suggest that an athlete's chronotype should be taken into account when scheduling training sessions and to promote faster recovery processes...
December 1, 2016: Chronobiology International
https://www.readbyqxmd.com/read/27901339/cardiac-parasympathetic-reactivation-after-small-sided-soccer-games-and-repeated-sprints-in-untrained-healthy-adolescents
#9
Amri Hammami, Sofien Kasmi, Narimen Yousfi, Marwa Bouamra, Zouhaier Tabka, Ezdine Bouhlel
BACKGROUND: It has been shown that recreational soccer was a highly motivating and social activity which produces large improvements in health-related indices in sedentary healthy and unhealthy subjects. The purpose of this study was to compare the acute parasympathetic reactivation after small-sided soccer games (SSG) and repeated sprints training (RST) sessions. METHODS: Eight post-pubertal untrained adolescents (age 15.8 ± 0.6 years, body mass 59.1 ± 3.7 kg, height 1...
November 30, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27900291/elastin-a-possible-genetic-biomarker-for-more-severe-ligament-injuries-in-elite-soccer-a-pilot-study
#10
Rosa Artells, Ricard Pruna, Alexandre Dellal, Nicola Maffulli
BACKGROUND: The study of new genetic biomarkers in genes related to connective tissue repair and regeneration may help to identify individuals with greater predisposition to injury, who may benefit from targeted preventive measures, and those who require longer recovery time following a muscle, ligament or tendon injury. The present study investigated whether single nucleotide polymorphisms of the Elastin gene could be related to MCL injury. METHODS: 60 top class football players were studied to identify single nucleotide polymorphisms for the Elastin (ELN) gene using Allelic Discrimination analysis...
April 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/27787466/relationship-between-running-performance-and-recovery-stress-state-in-collegiate-soccer-players
#11
Nicholas A Coker, Klarie M Ake, David L Griffin, Stephen J Rossi, Jim L McMillan, Adam J Wells
The purpose of this study was to evaluate the relationship between changes in running performance and the stress-recovery state in collegiate soccer players. Running performance was evaluated in seven Division I NCAA male soccer players (179.39±5.24 cm; 75.46±5.98 kg; 20.37±1.41 yrs.) via global positioning system over the course of 12 competitive games in a single season. The regular season was divided into four competitive blocks: B1 (n=3), B2 (n=3), B3 (n=3) and B4 (n=3). Total distance and distance covered while engaging in walking, jogging, low-speed running, high-speed running, sprinting, low-intensity running and high-intensity running were assessed during each block...
October 17, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27772532/multidisciplinary-management-of-pediatric-sports-related-concussion
#12
Michael J Ellis, Lesley J Ritchie, Patrick J McDonald, Dean Cordingley, Karen Reimer, Satnam Nijjar, Mark Koltek, Shahid Hosain, Janine Johnston, Behzad Mansouri, Scott Sawyer, Norm Silver, Richard Girardin, Shannon Larkins, Sara Vis, Erin Selci, Michael Davidson, Scott Gregoire, Angela Sam, Brian Black, Martin Bunge, Marco Essig, Peter MacDonald, Jeff Leiter, Kelly Russell
OBJECTIVES: To summarize the clinical characteristics and outcomes of pediatric sports-related concussion (SRC) patients who were evaluated and managed at a multidisciplinary pediatric concussion program and examine the healthcare resources and personnel required to meet the needs of this patient population. METHODS: We conducted a retrospective review of all pediatric SRC patients referred to the Pan Am Concussion Program from September 1st, 2013 to May 25th, 2015...
January 2017: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
https://www.readbyqxmd.com/read/27763581/match-analysis-of-an-elite-beach-soccer-team
#13
Rosario Scarfone, Antonio Ammendolia
BACKGROUND: The aim of this study was to investigate the physiological demands and technical-tactical performances of field players in Italian elite beach soccer team. METHODS: Three official matches of the Italian First Division beach soccer tournament were analyzed to evaluate the heart rate (HR) and time-motion analysis considering: standing, walking, jogging, running and sprinting, and technical-tactical aspects. Repeated-measures ANOVAs were used to determine the effects of time on the physiological measures and time motion analysis...
October 20, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27761664/increasing-performance-of-professional-soccer-players-and-elite-track-and-field-athletes-with-peak-performance-training-and-biofeedback-a-pilot-study
#14
Noortje H Rijken, Remko Soer, Ewold de Maar, Hilco Prins, Wouter B Teeuw, Jan Peuscher, Frits G J Oosterveld
The aim of this pilot study was to investigate the effects of an intervention consisting of mental coaching combined with either electro encephalogram (EEG) alpha power feedback or heart rate variability (HRV) feedback on HRV, EEG outcomes and self-reported factors related to stress, performance, recovery and sleep quality in elite athletes. A prospective pilot study was performed with two distinct cohorts. Soccer players were provided with four sessions of mental coaching combined with daily HRV biofeedback (Group A); track and field athletes were provided with four sessions of mental coaching in combination with daily neurofeedback (Group B)...
December 2016: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/27757284/the-relationship-between-trunk-endurance-plank-tests-and-athletic-performance-tests-in-adolescent-soccer-players
#15
Atsushi Imai, Koji Kaneoka
BACKGROUND: Although it is believed that trunk function is important for athletic performance, few researchers have demonstrated a significant relationship between the trunk function and athletic performance. Recently, the prone plank and side plank tests have been used to assess trunk function. PURPOSE: The purpose of this study was to investigate the relationships between trunk endurance plank tests and athletic performance tests, including whether there is a relationship between long distance running and trunk endurance plank tests in adolescent male soccer players...
October 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27751660/measuring-recovery-an-adapted-brief-assessment-of-mood-bam-compared-to-biochemical-and-power-output-alterations
#16
David A Shearer, William Sparkes, Jonny Northeast, Daniel J Cunningham, Christian J Cook, Liam P Kilduff
OBJECTIVES: Biochemical (e.g. creatine kinase (CK)) and neuromuscular (e.g. peak power output (PPO)) markers of recovery are expensive and require specialist equipment. Perceptual measures are an effective alternative, yet most validated scales are too long for daily use. DESIGN: This study utilises a longitudinal multi-level design to test an adapted Brief Assessment of Mood (BAM+), with four extra items and a 100mm visual analogue scale to measure recovery. METHODS: Elite under-21 academy soccer players (N=11) were monitored across five games with data (BAM+, CK and PPO) collected for each game at 24h pre, 24h and 48h post-match...
October 5, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27676275/hormonal-cortical-gonadotropic-axis-and-physical-changes-with-two-years-intense-exercise-training-in-elite-young-soccer-players
#17
Mohamed Ali Hammami, Abderraouf Ben Abderrahman, Anthony C Hackney, Wiem Kebsi, Adam L Owen, Amar Nebigh, Ghazi Racil, Zouhair Tabka, Hassane Zouhal
The aim of this study was to investigate the effects of two soccer-training seasons on physical fitness and hormone concentrations in elite youth soccer players. Twenty male elite soccer players (SP, age 14.5 ± 0.4 years) and 20 male control subjects (CS, age 14.3 ± 0.3years) participated to the study. Anthropometric measurements, aerobic (Yo-Yo Intermittent Recovery Test Level 1 (YYIRT1)) and anaerobic soccer relevant performances (jump and sprint tests), blood testosterone (T), cortisol (C),sex hormone binding globulin (SHBG) and T/C ratio were assessed 5 times (from T0 to T4) during two competitive seasons...
September 23, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27618386/effects-of-velocity-loss-during-resistance-training-on-performance-in-professional-soccer-players
#18
Fernando Pareja-Blanco, Luis Sánchez-Medina, Luis Suárez-Arrones, Juan José González-Badillo
AIM: To analyze the effects of two resistance training (RT) programs that used the same relative loading but different repetition volume, using the velocity loss during the set as the independent variable: 15% (VL15) vs. 30% (VL30). METHODS: Sixteen professional soccer players with RT experience (age 23.8 ± 3.5 years, body mass 75.5 ± 8.6 kg) were randomly assigned to two groups: VL15 (n = 8) or VL30 (n = 8) that followed a 6-week (18 sessions) velocity-based squat training program...
September 6, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27614926/the-biomechanical-and-physiological-response-to-repeated-soccer-specific-simulations-interspersed-by-48-or-72%C3%A2-hours-recovery
#19
Richard Michael Page, Kelly Marrin, Chris Michael Brogden, Matt Greig
PURPOSE: To assess the residual fatigue response associated with the completion of two successive soccer-specific exercise protocols (SSEP). METHODS: Twenty male soccer players were pair-matched before completing SSEPs, interspersed by either 48 or 72 h. Outcome variables were measured every 15 min, and comprised uni-axial measures of PlayerLoad, mean (HR) and peak heart rate (HRpeak), blood lactate concentration, mean and peak (V˙O2peak) oxygen consumption, and rating of perceived exertion (RPE)...
November 2016: Physical Therapy in Sport
https://www.readbyqxmd.com/read/27601783/effects-of-far-infrared-rays-emitting-clothing-on-recovery-after-an-intense-plyometric-exercise-bout-applied-to-elite-soccer-players-a-randomized-double-blind-placebo-controlled-trial
#20
I Loturco, Ccc Abad, F Y Nakamura, S P Ramos, R Kobal, S Gil, L A Pereira, Fhp Burini, H Roschel, C Ugrinowitsch, V Tricoli
The aim was to investigate the effects of far infrared (FIR) ray emitting clothes on indirect markers of exercise-induced muscle damage and physical performance recovery after a plyometric bout applied to soccer players. Twenty-one male players (18.9±0.6 years; 70.8±5.01 kg; 178.3±0.06 cm) performed 100 drop-jumps. Six hours after the bout, athletes put on FIR clothes (FIR) (density of 225 g·m(-2), 88% far infrared rays emitting polyamide 66 Emana yarn (PA66) fibre, 12% Spandex, emissivity of 0.88 and power emitted of 341 W/m2µm at 37°C in the 5-20 µm wavelength range, patent WO 2009/077834 A2) (N = 10) or placebo clothes (PLA) (N = 11)...
September 2016: Biology of Sport
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