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Holly J Silvers-Granelli, Mario Bizzini, Amelia Arundale, Bert R Mandelbaum, Lynn Snyder-Mackler
PURPOSE: The 11+ injury prevention program has been shown to decrease injury rate. However, few studies have investigated compliance and if it is correlated to time loss. The purpose of this study was to (1) analyze how differences in compliance may impact injury rate and (2) if compliance may impact time loss due to injury. METHODS: This study was a Level 1 prospective cluster randomized controlled trial conducted in NCAA men's football (soccer) teams that examined the efficacy of the 11+ injury prevention program...
March 19, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
Timothy J H Lathlean, Paul B Gastin, Stuart V Newstead, Caroline F Finch
OBJECTIVES: To describe the incidence, prevalence, severity, mechanism and body region of injuries in elite junior Australian football (AF) players over one competitive season in order to help inform injury prevention interventions. DESIGN: Prospective cohort, data collected during the 2014 playing season. METHODS: Player and staff-reported injuries sustained by 562 players from an under-18 state league were entered into an online sports injury surveillance system...
March 14, 2018: Journal of Science and Medicine in Sport
Enda F Whyte, Chris Richter, Siobhan O'Connor, Kieran A Moran
Anterior cruciate ligament (ACL) injuries frequently occur during side cutting maneuvers when fatigued or reacting to the sporting environment. Trunk and hip biomechanics are proposed to influence ACL loading during these activities. However, the effects of fatigue and unanticipation on the biomechanics of the kinetic chain may be limited by traditional discrete point analysis. We recruited twenty-eight male, varsity, Gaelic footballers (21.7±2.2 years; 178.7±14.6m; 81.8±11.4kg) to perform anticipated and unanticipated side cutting maneuvers pre- and post- a high intensity, intermittent exercise protocol (HIIP)...
March 13, 2018: Journal of Strength and Conditioning Research
Marcus J Colby, Brian Dawson, Peter Peeling, Jarryd Heasman, Brent Rogalski, Michael K Drew, Jordan Stares
OBJECTIVES: To assess the effect of multiple high risk scenario (HRS) exposures on non-contact injury prediction in elite Australian footballers. DESIGN: Retrospective cohort study. METHODS: Sessional workload data (session-rating of perceived exertion; GPS-derived distance, sprint distance, maximum velocity) from one club (n= 60 players) over 3 seasons were collated; several established HRS were also defined. Accumulated HRS sessional exposures were calculated retrospectively (previous 1-8 weeks)...
March 15, 2018: International Journal of Sports Physiology and Performance
Alireza Esmaeili, Andrew M Stewart, William G Hopkins, George P Elias, Brendan H Lazarus, Amber E Rowell, Robert J Aughey
Aim: The sit and reach test (S&R), dorsiflexion lunge test (DLT), and adductor squeeze test (AST) are commonly used in weekly musculoskeletal screening for athlete monitoring and injury prevention purposes. The aim of this study was to determine the normal week to week variability of the test scores, individual differences in variability, and the effects of training load on the scores. Methods: Forty-four elite Australian rules footballers from one club completed the weekly screening tests on day 2 or 3 post-main training (pre-season) or post-match (in-season) over a 10 month season...
2018: Frontiers in Physiology
Chris Feudtner, Steven H Miles
No abstract text is available yet for this article.
March 12, 2018: JAMA Pediatrics
Doug King, Patria A Hume, Natalie Hardaker, Cloe Cummins, Conor Gissane, Trevor Clark
OBJECTIVES: To provide epidemiological data and related costs for sport-related injuries of five sporting codes (cricket, netball, rugby league, rugby union and football) in New Zealand for moderate-to-serious and serious injury claims. METHODS: A retrospective analytical review using detailed descriptive epidemiological data obtained from the Accident Compensation Corporation (ACC) for 2012-2016. RESULTS: Over the 5 years of study data, rugby union recorded the most moderate-to-serious injury entitlement claims (25 226) and costs (New Zealand dollars (NZD$)267 359 440 (£139 084 749)) resulting in the highest mean cost (NZD$10 484 (£5454)) per moderate-to-serious injury entitlement claim...
March 12, 2018: British Journal of Sports Medicine
Felix Fischer, Christian Hoser, Cornelia Blank, Wolfgang Schobersberger, Caroline Hepperger, Peter Gföller, Christian Fink
PURPOSE AND HYPOTHESIS:  With its load characteristics, the team sport of football places high physical demands on players and thus is associated with a high risk of injury. Therefore, the purpose of this study was to collect information about injuries suffered by football players in Austria during training or matches to enable participating clubs to learn about injuries. METHODS:  One hundred and forty-five players from seven teams with age ranging from 16 to 38 years participated in this prospective study during the 2015/16 season...
March 12, 2018: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
Gary B Wilkerson, Ashish Gupta, Marisa A Colston
Sport injuries restrict participation, impose a substantial economic burden, and can have persisting adverse effects on health-related quality of life. The effective use of Internet of Things (IoT), when combined with analytics approaches, can improve player safety through identification of injury risk factors that can be addressed by targeted risk reduction training activities. Use of IoT devices can facilitate highly efficient quantification of relevant functional capabilities prior to sport participation, which could substantially advance the prevailing sport injury management paradigm...
March 12, 2018: Risk Analysis: An Official Publication of the Society for Risk Analysis
Timothy J H Lathlean, Paul B Gastin, Stuart Newstead, Caroline F Finch
Well-developed physical qualities such as high jumping ability, running endurance, acceleration and speed can help aspiring junior elite Australian football (AF) players transition to the Australian Football League competition. In order to do so, players need to experience sufficient load in order to enhance their physical resilience without increasing their risk of negative outcomes in terms of impaired wellness or injury. The aim of this study was to investigate the differences in load for different levels of competition and training modes across one competitive season...
March 6, 2018: Journal of Strength and Conditioning Research
Sailesh V Tummala, David E Hartigan, Karan A Patel, Justin L Makovicka, Anikar Chhabra
Background: Up to 50% of National Collegiate Athletic Association (NCAA) football players have a history of shoulder injuries. The quarterback position has been shown to have a high prevalence of these injuries because of its unique exposures. There is little information regarding the shoulder injury type and mechanism in NCAA quarterbacks. Purpose: To understand the 10-year epidemiology of specific shoulder injury rates in NCAA quarterbacks. Study Design: Descriptive epidemiology study...
February 2018: Orthopaedic Journal of Sports Medicine
Kerry Peek, Don Gatherer, Kyle J M Bennett, Job Fransen, Mark Watsford
The objective of this study was to investigate knee muscle strength characteristics in players from a high-level youth football Academy. In total, 110 players (aged 8-15 years) underwent muscle strength assessments carried out by a research physiotherapist using a computer-linked hand-held dynamometer. Results indicated that isometric hamstrings and quadriceps strength increased with age, whereas the isometric hamstring to quadriceps (H/Q) ratio decreased with age. A number of youth football players (n = 20; 18%; 95% CI: 11-27%) demonstrated isometric H/Q ratios of less than 0...
March 5, 2018: Research in Sports Medicine
Paula C Charlton, Benjamin Raysmith, Martin Wollin, Simon Rice, Craig Purdam, Ross A Clark, Michael K Drew
OBJECTIVES: To evaluate strength and flexibility measures pre- and post- Australian Football (AF) competition to determine their potential utility as secondary prevention measures. DESIGN: Cohort study. SETTING: Semi-professional AF club. PARTICIPANTS: Ten male AF athletes (mean ± SD; age, 21.3 ± 2.2 years; height, 186.1 ± 6.3 cm; weight, 83.5 ± 8.6 kg). MAIN OUTCOME MEASURES: Maximal unilateral isometric knee flexion strength performed in 45 degrees of hip flexion and 30 degrees of knee flexion, flexibility measures of hip and knee extension and ankle dorsiflexion...
February 2, 2018: Physical Therapy in Sport
Matthew J Kraeutler, Eric C McCarty, John W Belk, Brian R Wolf, Carolyn M Hettrich, Shannon F Ortiz, Jonathan T Bravman, Keith M Baumgarten, Julie Y Bishop, Matthew J Bollier, Robert H Brophy, James L Carey, James E Carpenter, Charlie L Cox, Brian T Feeley, John A Grant, Grant L Jones, John E Kuhn, John D Kelly, C Benjamin Ma, Robert G Marx, Bruce S Miller, Brian J Sennett, Matthew V Smith, Rick W Wright, Alan L Zhang
BACKGROUND: Shoulder instability is a common diagnosis among patients undergoing shoulder surgery. PURPOSE: To perform a descriptive analysis of patients undergoing surgery for shoulder instability through a large multicenter consortium. STUDY DESIGN: Case series; Level of evidence, 4. METHODS: All patients undergoing surgery for shoulder instability who were enrolled in the MOON Shoulder Instability Study were included...
March 1, 2018: American Journal of Sports Medicine
Mark Roe, Shane Malone, Eamonn Delahunt, Kieran Collins, Conor Gissane, Ulrik McCarthy Persson, John C Murphy, Catherine Blake
OBJECTIVE: Report eccentric knee flexor strength values of elite Gaelic football players from underage to adult level whilst examining the influence of body mass and previous hamstring injury. DESIGN: Cross-sectional study. SETTING: Team's training facility. PARTICIPANTS: Elite Gaelic football players (n = 341) from under 14 years to senior age-grades were recruited from twelve teams. MAIN OUTCOME MEASURES: Absolute (N) and relative (N·kg-1 ) eccentric hamstring strength as well as corresponding between-limb imbalances (%) were calculated for all players...
March 1, 2018: Physical Therapy in Sport
Matthew J Matava
Although the epidemiology and risk factors for chondral injuries of the knee among prospective National Football League athletes have been reported, the effect of previously untreated chondral injuries on players' early National Football League career performance has been unclear to this point. Despite not requiring surgical treatment, players with these untreated injuries were drafted later, played and started fewer games, and exhibited lower fantasy scores-a surrogate marker for performance. Untreated chondral injuries of the knee can have potentially deleterious effects on the playing careers (and financial prospects) of professional American football players...
March 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
Andrew Post, Marshall Kendall, Janie Cournoyer, Clara Karton, R Anna Oeur, Lauren Dawson, T Blaine Hoshizaki
Concussion in American football is a prevalent concern. Research has been conducted examining frequencies, location, and thresholds for concussion from impacts. Little work has been done examining how impact location may affect risk of concussive injury. The purpose of this research was to examine how impact site on the helmet and type of impact, affects the risk of concussive injury as quantified using finite element modelling of the human head and brain. A linear impactor was used to impact a helmeted Hybrid III headform in several locations and using centric and non-centric impact vectors...
March 4, 2018: Computer Methods in Biomechanics and Biomedical Engineering
Malia N Blue, Eric T Trexler, Katie R Hirsch, Abbie E Smith-Ryan
BACKGROUND: Body composition (%BF), omega-3 and vitamin D (VitD) status are important components of an athlete's individual physiological profile, as each measure has potential to influence performance, inflammation, and injury recovery. The purpose of this study was to characterize %BF, omega-3, and VitD in a subset of professional football athletes. Secondary analyses investigated changes in %BF, omega-3, and VitD, throughout a competitive season, and evaluated the relationship between physiological variables, race, and injury prevalence...
March 1, 2018: Journal of Sports Medicine and Physical Fitness
Edward S Chang, Meghan E Bishop, Christopher C Dodson, Peter F Deluca, Michael G Ciccotti, Steven B Cohen, Matthew L Ramsey
Background: Although much literature exists regarding the treatment and management of elbow dislocations in the general population, little information is available regarding management in the athletic population. Furthermore, no literature is available regarding the postinjury treatment and timing of return to play in the contact or professional athlete. Purpose: To review the clinical course of elbow dislocations in professional football players and determine the timing of return to full participation...
February 2018: Orthopaedic Journal of Sports Medicine
Ben Macdonald, John O'Neill, Noel Pollock, Bas Van Hooren
Poor hamstring strength-endurance is a risk factor for hamstring injuries. This study investigated the effectiveness of the single-leg Roman hold and Nordic hamstring curl in improving hamstring strength-endurance. Twelve Gaelic footballers (mean ± standard deviation age, height and mass were 25.17 ± 3.46 years, 179.25 ± 5.88 cm, 85.75 ± 4.75 kilo) with a history of hamstring injury were randomized into 2 groups that performed 6 weeks of either Nordic hamstring curl, or single-leg Roman chair hold training...
February 27, 2018: Journal of Strength and Conditioning Research
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