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https://www.readbyqxmd.com/read/29150270/m-biceps-femoris-a-wolf-in-sheep-s-clothing-the-downside-of-a-lower-limb-injury-prevention-training
#1
Thomas Ertelt, Thomas Gronwald
Both, hamstring and ACL injuries are among the most typical injuries, particularly in change of direction and high speed running sports. They're also difficult to treat. Therefore, in the past few years, sports medicine practitioners and exercise scientists have mainly been focusing on the development and implementation of preventive programs in order to reduce the number of lower limb injuries, mainly by improving knee alignment. A number of studies have been able to prove the success of these training interventions, which are mainly addressing sensorimotor abilities and plyometric activities...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29132269/correlation-of-concussion-symptom-profile-with-head-impact-biomechanics-a-case-for-individual-specific-injury-tolerance
#2
Steven Rowson, Stefan M Duma, Brian D Stemper, Alok S Shah, Jason Mihalik, Jaroslaw Harezlak, Larry D Riggen, Christopher C Giza, John DiFiori, Alison Brooks, Kevin K Guskiewicz, Darren Campbell, Jerry McGinty, Steve Svoboda, Ken Cameron, Steven P Broglio, Thomas McAllister, Michael McCrea
Concussion is a brain injury induced by biomechanical forces that is broadly defined as a complex pathophysiological process affecting the brain. The intricate link between biomechanical input and concussion injury response is poorly understood. We aimed to test the hypothesis that greater biomechanical forces would result in the presentation of more concussion-related symptoms that would take longer to resolve. The objective of this study was to investigate the relationship between an array of biomechanical parameters measured for concussive impacts and the presentation and resolution of concussion symptoms...
November 13, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29126659/phases-of-match-play-in-professional-australian-football-descriptive-analysis-and-reliability-assessment
#3
Michael J Rennie, Mark L Watsford, Robert W Spurrs, Stephen J Kelly, Matthew J Pine
OBJECTIVES: To examine the frequency and time spent in the phases of Australian Football (AF) match-play and to assess the intra-assessor reliability of coding these phases of match-play. DESIGN: Observational, intra-reliability assessment. METHODS: Video footage of 10 random quarters of AF match-play were coded by a single researcher. Phases of offence, defence, contested play, umpire stoppage, set shot and goal reset were coded using a set of operational definitions...
October 23, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29117428/change-in-knee-flexor-torque-after-fatiguing-exercise-identifies-previous-hamstring-injury-in-football-players
#4
Cameron Lord, Fadi Ma'ayah, Anthony J Blazevich
PURPOSE: Muscular fatigue and inter-limb strength asymmetry are factors known to influence hamstring injury risk, however limb-specific exacerbation of knee flexor (hamstrings) torque production after fatiguing exercise has previously been ignored. To investigate changes in muscular force production before and after sport-specific (repeated-sprint) and non-specific (knee extension-flexion) fatiguing exercise, and explore the sensitivity and specificity of isokinetic endurance (i.e. muscle-specific) and single-leg vertical jump (i...
November 8, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29075200/neuromuscular-adaptations-to-multimodal-injury-prevention-programs-in-youth-sports-a-systematic-review-with-meta-analysis-of-randomized-controlled-trials
#5
Oliver Faude, Roland Rössler, Erich J Petushek, Ralf Roth, Lukas Zahner, Lars Donath
Objective: Neuromuscular injury prevention programs (IPP) can reduce injury rate by about 40% in youth sport. Multimodal IPP include, for instance, balance, strength, power, and agility exercises. Our systematic review and meta-analysis aimed to evaluate the effects of multimodal IPP on neuromuscular performance in youth sports. Methods: We conducted a systematic literature search including selected search terms related to youth sports, injury prevention, and neuromuscular performance. Inclusion criteria were: (i) the study was a (cluster-)randomized controlled trial (RCT), and (ii) investigated healthy participants, up to 20 years of age and involved in organized sport, (iii) an intervention arm performing a multimodal IPP was compared to a control arm following a common training regime, and (iv) neuromuscular performance parameters (e...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29037104/high-magnitude-head-impact-exposure-in-youth-football
#6
Eamon T Campolettano, Ryan A Gellner, Steven Rowson
OBJECTIVE Even in the absence of a clinically diagnosed concussion, research suggests that neurocognitive changes may develop in football players as a result of frequent head impacts that occur during football games and practices. The objectives of this study were to determine the specific situations in which high-magnitude impacts (accelerations exceeding 40 g) occur in youth football games and practices and to assess how representative practice activities are of games with regard to high-magnitude head impact exposure...
October 17, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29028445/return-to-sport-specific-performance-after-primary-anterior-cruciate-ligament-reconstruction-a-systematic-review
#7
Nicholas G Mohtadi, Denise S Chan
BACKGROUND: Physicians counseling athletes on the prognosis of sport-specific performance outcomes after anterior cruciate ligament reconstruction (ACLR) depend on the published literature. However, critical appraisal of the validity and biases in these studies is required to understand how ACLR affects an athlete's ability to return to sport, the athlete's sport-specific performance, and his or her ability to achieve preinjury levels of performance. PURPOSE: This review identifies the published prognostic studies evaluating sport-specific performance outcomes after ACLR...
October 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29016720/predicting-regulatory-compliance-in-beer-advertising-on-facebook
#8
Jonathan K Noel, Thomas F Babor
Aims: The prevalence of alcohol advertising has been growing on social media platforms. The purpose of this study was to evaluate alcohol advertising on Facebook for regulatory compliance and thematic content. Methods: A total of 50 Budweiser and Bud Light ads posted on Facebook within 1 month of the 2015 NFL Super Bowl were evaluated for compliance with a self-regulated alcohol advertising code and for thematic content. An exploratory sensitivity/specificity analysis was conducted to determine if thematic content could predict code violations...
August 30, 2017: Alcohol and Alcoholism: International Journal of the Medical Council on Alcoholism
https://www.readbyqxmd.com/read/28985697/characterization-of-prepractice-injury-prevention-exercises-of-high-school-athletic-teams
#9
James R Slauterbeck, Autumn Reilly, Pamela M Vacek, Rebecca Choquette, Timothy W Tourville, Bert Mandelbaum, Robert J Johnson, Bruce D Beynnon
BACKGROUND: Static and dynamic exercises are performed before activity to decrease injury risk and increase performance. Although evidence supports using dynamic over static stretching and performing Fédération Internationale de Football Association (FIFA) 11+ as a dynamic prepractice routine, we do not know the frequency at which these exercises are utilized in high school populations. HYPOTHESIS: We hypothesize that there is a wide variety of preparticipation exercises performed by high school athletes, and that few high school teams perform FIFA 11+ as an injury prevention program in its entirety...
November 2017: Sports Health
https://www.readbyqxmd.com/read/28959698/risk-factors-for-the-postoperative-recurrence-of-instability-after-arthroscopic-bankart-repair-in-athletes
#10
Shigeto Nakagawa, Tatsuo Mae, Seira Sato, Shinichiro Okimura, Miki Kuroda
BACKGROUND: Several risk factors for the postoperative recurrence of instability after arthroscopic Bankart repair have been reported, but there have been few detailed investigations of the specific risk factors in relation to the type of sport. PURPOSE: This study investigated the postoperative recurrence of instability after arthroscopic Bankart repair without additional reinforcement procedures in competitive athletes, including athletes with a large glenoid defect...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28949247/the-epidemiology-of-overuse-conditions-in-youth-football-and-high-school-football-players
#11
Kevin Morris, Janet E Simon, Dustin R Grooms, Chad Starkey, Thomas P Dompier, Zachary Y Kerr
CONTEXT:   High-intensity sport training at the youth level has led to increased concern for overuse conditions. Few researchers have examined overuse conditions in youth sports. OBJECTIVE:   To examine the rates, risks, and distributions of overuse conditions between youth and high school football players. DESIGN:   Descriptive epidemiologic study. SETTING:   Youth and high school football teams. PATIENTS OR OTHER PARTICIPANTS:   The Youth Football Safety Study (YFSS) investigated youth football athletes from age 5 to 14 years...
October 2017: Journal of Athletic Training
https://www.readbyqxmd.com/read/28941634/applying-graphs-and-complex-networks-to-football-metric-interpretation
#12
E Arriaza-Ardiles, J M Martín-González, M D Zuniga, J Sánchez-Flores, Y de Saa, J M García-Manso
This work presents a methodology for analysing the interactions between players in a football team, from the point of view of graph theory and complex networks. We model the complex network of passing interactions between players of a same team in 32 official matches of the Liga de Fútbol Profesional (Spain), using a passing/reception graph. This methodology allows us to understand the play structure of the team, by analysing the offensive phases of game-play. We utilise two different strategies for characterising the contribution of the players to the team: the clustering coefficient, and centrality metrics (closeness and betweenness)...
September 20, 2017: Human Movement Science
https://www.readbyqxmd.com/read/28937917/head-impact-exposure-measured-in-a-single-youth-football-team-during-practice-drills
#13
Mireille E Kelley, Joeline M Kane, Mark A Espeland, Logan E Miller, Alexander K Powers, Joel D Stitzel, Jillian E Urban
OBJECTIVE This study evaluated the frequency, magnitude, and location of head impacts in practice drills within a youth football team to determine how head impact exposure varies among different types of drills. METHODS On-field head impact data were collected from athletes participating in a youth football team for a single season. Each athlete wore a helmet instrumented with a Head Impact Telemetry (HIT) System head acceleration measurement device during all preseason, regular season, and playoff practices...
November 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28912742/perception-action-and-cognition-of-football-referees-in-extreme-temperatures-impact-on-decision-performance
#14
Nadia Gaoua, Rita F de Oliveira, Steve Hunter
Different professional domains require high levels of physical performance alongside fast and accurate decision-making. Construction workers, police officers, firefighters, elite sports men and women, the military and emergency medical professionals are often exposed to hostile environments with limited options for behavioral coping strategies. In this (mini) review we use football refereeing as an example to discuss the combined effect of intense physical activity and extreme temperatures on decision-making and suggest an explicative model...
2017: Frontiers in Psychology
https://www.readbyqxmd.com/read/28904595/a-cross-continental-study-on-children-s-drawings-of-football-players-implications-for-understanding-key-issues-and-controversies-in-human-figure-drawings
#15
Bahman Baluch, Linda J Duffy, Rokhsareh Badami, Elisangela C Ap Pereira
Professionals examine various aspects of girls' and boys' drawings as a way of understanding their intelligence, personality and emotional state. However, the extent to which such measures could be universally generalised or attributed to a specific cultural norm is still a debatable issue. In the present study five key features of children's drawings namely: the size (height) of the drawings, profile or full face, figure in action or static, shaded or non-shaded and the nature of additional details were examined from a cross-cultural perspective, and by providing a topic (football) for which children's drawing of a human figure could provide opportunities for the latter indices to manifest and flourish...
August 2017: Europe's journal of psychology
https://www.readbyqxmd.com/read/28885451/visual-structure-and-function-in-collision-sport-athletes
#16
Danielle Leong, Christina Morettin, Leonard V Messner, Robert J Steinmetz, Yi Pang, Steven L Galetta, Laura J Balcer
BACKGROUND: Vision-based measures have been shown to be useful markers in multiple sclerosis (MS), Alzheimer and Parkinson disease. Therefore, these testing paradigms may have applications to populations explaining repetitive head trauma that has been associated with long-term neurodegenerative sequelae. We investigated retinal structure and visual function in professional collision sport athletes compared to age- and race-matched control participants. METHODS: In this cross-sectional study, participants underwent spectral-domain optical coherence tomography (OCT) measurements of peripapillary retinal nerve fiber layer (RNFL) and macular ganglion cell complex (GCC = ganglion cell + inner plexiform layers) thickness...
September 6, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28874926/craniosacral-therapy-and-visceral-manipulation-a-new-treatment-intervention-for-concussion-recovery
#17
Gail Wetzler, Melinda Roland, Sally Fryer-Dietz, Dee Dettmann-Ahern
Background: Military service members and veterans face health issues related to traumatic brain injury (TBI), especially during combat, use of heavy equipment, and exposures to environmental hazards and explosives. There were 400,000 TBIs reported in deployed U.S. troops in 2012. Athletes are also subject to TBI. Studies have indicated that some manual therapies could be helpful for treating patients who have post-concussive syndrome. Objective: This case series report describes the effects of CranioSacral Therapy (CST), Visceral Manipulation (VM), and Neural Manipulation (NM) modalities for treating patients who have post-concussion syndrome...
August 1, 2017: Medical Acupuncture
https://www.readbyqxmd.com/read/28872485/what-is-the-value-of-a-national-football-league-draft-pick-an-analysis-based-on-changes-made-in-the-collective-bargaining-agreement
#18
Matthew J Kraeutler, Trevor J Carver, John W Belk, Eric C McCarty
The purpose of this study was to analyze and compare the value of players drafted in early rounds of the NFL Draft since the new collective bargaining agreement (CBA) began in 2011. The NFL's player statistics database and database of player contract details were searched for players drafted in the first three rounds of the 2011 to 2013 NFL Drafts. Performance outcomes specific to each position were divided by each player's salary to calculate a value statistic. Various demographics, NFL Combine results, and total number of games missed due to injury were also recorded for each player...
June 2, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28870119/a-history-of-concussions-is-associated-with-symptoms-of-common-mental-disorders-in-former-male-professional-athletes-across-a-range-of-sports
#19
Vincent Gouttebarge, Haruhito Aoki, Michael Lambert, William Stewart, Gino Kerkhoffs
OBJECTIVE: Recent reports suggest that exposure to repetitive concussions in sports is associated with an increased risk of symptoms of distress, anxiety and depression, sleep disturbance or substance abuse/dependence (typically referred as symptoms of common mental disorders[CMD]) and of later development of neurodegenerative disease, in particular chronic traumatic encephalopathy (CTE). The primary aim of this study was to explore the relationship between sports career-related concussions and the subsequent occurrence of symptoms of CMD among former male professional athletes retired from football (soccer), ice hockey and rugby (union)...
September 13, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/28858055/thermoregulatory-and-perceptual-effects-of-a-percooling-garment-worn-underneath-an-american-football-uniform
#20
Megan L Keen, Kevin C Miller, Micah N Zuhl
Keen, ML, Miller, KC, and Zuhl, MN. Thermoregulatory and perceptual effects of a percooling garment worn underneath an American football uniform. J Strength Cond Res 31(11): 2983-2991, 2017-American football athletes are at the highest risk of developing exertional heat illness (EHI). We investigated whether percooling (i.e., cooling during exercise) garments affected perceptual or physiological variables in individuals exercising in the heat while wearing football uniforms. Twelve male participants (age = 24 ± 4 year, mass = 80...
November 2017: Journal of Strength and Conditioning Research
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