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https://www.readbyqxmd.com/read/28759540/a-comparison-of-the-technique-of-the-football-quarterback-pass-between-high-school-and-university-athletes
#1
Adam Toffan, Marion J L Alexander, Jason Peeler
The purpose of the study was to compare the most effective joint movements, segment velocities and body positions to perform the fastest and most accurate pass of high school and university football quarterbacks. Secondary purposes were to develop a quarterback throwing test to assess skill level, to determine which kinematic variables were different between high school and university athletes as well as to determine which variables were significant predictors of quarterback throwing test performance. Ten high school and ten university athletes were filmed for the study, performing nine passes at a target and two passes for maximum distance...
July 28, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28757236/fiber-based-modeling-of-in-situ-ankle-ligaments-with-consideration-of-progressive-failure
#2
Bingbing Nie, Jason L Forman, Matthew B Panzer, Alexander R Mait, John-Paul Donlon, Richard W Kent
Ligament sprains account for a majority of injuries to the foot and ankle complex among athletic populations. The infeasibility of measuring the in situ response and load paths of individual ligaments has precluded a complete characterization of their mechanical behavior via experiment. In the present study a fiber-based modeling approach of in situ ankle ligaments was developed and validated for determining the heterogeneous force-elongation characteristics and the consequent injury patterns. Nine major ankle ligaments were modeled as bundles of discrete elements, corresponding functionally to the structure of collagen fibers...
July 18, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28743205/do-baseball-pitchers-improve-mechanics-after-biomechanical-evaluations
#3
Glenn S Fleisig, Alek Z Diffendaffer, Brett Ivey, Kyle T Aune
The purpose of this study was to determine how often flaws in pitching mechanics identified from biomechanical analysis are corrected. The biomechanics of 46 baseball pitchers were evaluated twice, with an average of 12 months (range 2-48 months) between evaluations. Pitchers were healthy at the time of both evaluations, competing at the high school, college, minor league or Major League level. After warming up, each participant pitched 10 full-effort fastballs. Automated three-dimensional motion analysis was used to compute eight kinematic parameters which were compared with a database of elite professional pitchers...
July 25, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28693353/injury-characteristics-of-low-energy-lisfranc-injuries-compared-with-high-energy-injuries
#4
Christopher H Renninger, Grant Cochran, Trevor Tompane, Joseph Bellamy, Kevin Kuhn
BACKGROUND: Lisfranc injuries result from high- and low-energy mechanisms though the literature has been more focused on high-energy mechanisms. A comparison of high-energy (HE) and low-energy (LE) injury patterns is lacking. The objective of this study was to report injury patterns in LE Lisfranc joint injuries and compare them to HE injury patterns. METHODS: Operative Lisfranc injuries were identified over a 5-year period. Patient demographics, mechanism of injury, injury pattern, associated injuries, missed diagnoses, clinical course, and imaging studies were reviewed and compared...
July 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28684897/influence-of-cleats-surface-interaction-on-the-performance-and-risk-of-injury-in-soccer-a-systematic-review
#5
REVIEW
Diogo C F Silva, Rubim Santos, João Paulo Vilas-Boas, Rui Macedo, António Mesquita Montes, Andreia S P Sousa
OBJECTIVE: To review the influence of cleats-surface interaction on the performance and risk of injury in soccer athletes. DESIGN: Systematic review. DATA SOURCES: Scopus, Web of science, PubMed, and B-on. ELIGIBILITY CRITERIA: Full experimental and original papers, written in English that studied the influence of soccer cleats on sports performance and injury risk in artificial or natural grass. RESULTS: Twenty-three articles were included in this review: nine related to performance and fourteen to injury risk...
2017: Applied Bionics and Biomechanics
https://www.readbyqxmd.com/read/28665770/blocking-landing-techniques-in-volleyball-and-the-possible-association-with-anterior-cruciate-ligament-injury
#6
David Zahradnik, Daniel Jandacka, Michal Holcapek, Roman Farana, Jaroslav Uchytil, Joseph Hamill
The number and type of landings performed after blocking during volleyball matches has been related to the potential risk of ACL injury. The aim of the present study was to determine whether gender affects the frequency of specific blocking landing techniques with potential risk of ACL injury from the perspective of foot contact and subsequent movement after the block used by volleyball players during competitive matches. Three matches involving four female volleyball teams (fourteen sets) and three matches involving four male volleyball teams (thirteen sets) in the Czech Republic were analyzed for this study...
June 30, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28652829/patellofemoral-pain-in-athletes
#7
REVIEW
Wolf Petersen, Ingo Rembitzki, Christian Liebau
Patellofemoral pain (PFP) is a frequent cause of anterior knee pain in athletes, which affects patients with and without structural patellofemoral joint (PFJ) damage. Most younger patients do not have any structural changes to the PFJ, such as an increased Q angle and a cartilage damage. This clinical entity is known as patellofemoral pain syndrome (PFPS). Older patients usually present with signs of patellofemoral osteoarthritis (PFOA). A key factor in PFPS development is dynamic valgus of the lower extremity, which leads to lateral patellar maltracking...
2017: Open Access Journal of Sports Medicine
https://www.readbyqxmd.com/read/28634682/searching-for-the-sweet-spot-the-foot-rotation-and-parallel-engagement-of-ankle-ligaments-in-maximizing-injury-tolerance
#8
Bingbing Nie, Jason L Forman, Alexander R Mait, John-Paul Donlon, Matthew B Panzer, Richard W Kent
Ligament sprains, defined as tearing of bands of fibrous tissues within ligaments, account for a majority of injuries to the foot and ankle complex in field-based sports. External rotation of the foot is considered the primary injury mechanism of syndesmotic ankle sprains with concomitant flexion and inversion/eversion associated with particular patterns of ligament trauma. However, the influence of the magnitude and direction of loading vectors to the ankle on the in situ stress state of the ligaments has not been quantified in the literature...
June 20, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28633790/ochrobactrum-anthropi-caused-osteomyelitis-in-the-foot-mimicking-a%C3%A2-bone-tumor-case-report-and-review-of-the-literature
#9
Roy Gigi, Gideon Flusser, Assaf Kadar, Moshe Salai, Shlomo Elias
Osteomyelitis due to Ochrobactrum anthropi, a new genus Ochrobacterum widely distributed in the environment and occasionally associated with human infection, has been described in only a few case reports. We present a report of an unusual case of osteomyelitis caused by O. anthropi that was identified 9 years after a nail puncture to the lateral cuneiform bone. The patient was an 18-year-old male with a painful foot lesion that had originally been misdiagnosed as an osteolytic tumor. He underwent surgery and 2 firm pieces of rubber measuring 7 and 10 mm were removed from the lower portion of the lateral cuneiform bone, which appeared to be affected by an infection...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28605235/effects-of-hip-strengthening-on-neuromuscular-control-hip-strength-and-self-reported-functional-deficits-in-individuals-with-chronic-ankle-instability
#10
Brent I Smith, Carrie L Docherty, Denice Curtis
CONTEXT: Deficits in ankle and hip strength and lower extremity postural control are associated with chronic ankle instability (CAI). Following strength training, muscle groups demonstrate increased strength. This change is partially credited to improved neuromuscular control and many studies have investigated ankle protocols for subjects with CAI. The effects of isolating hip musculature in strength training protocols in this population is not well understood. OBJECTIVE: Examine the effects of hip strengthening on clinical and self-reported outcomes in patients with CAI...
June 12, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28602113/primary-arthrodesis-versus-open-reduction-and-internal-fixation-for-low-energy-lisfranc-injuries-in-a-young-athletic-population
#11
Grant Cochran, Christopher Renninger, Trevor Tompane, Joseph Bellamy, Kevin Kuhn
BACKGROUND: There are 2 Level I studies comparing open reduction and internal fixation (ORIF) and primary arthrodesis (PA) in high-energy Lisfranc injuries. There are no studies comparing ORIF and PA in young athletic patients with low-energy injuries. METHODS: All operatively managed low-energy Lisfranc injuries sustained by active duty military personnel at a single institution were identified from 2010 to 2015. The injury pattern, method of treatment, and complications were reviewed...
June 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28599018/biopsychosocial-factors-associated-with-foot-and-ankle-pain-and-injury-in-irish-dance-a-prospective-study
#12
Roisin Cahalan, Helen Purtill, Kieran O'Sullivan
BACKGROUND: Foot and ankle pain/injury (FAPI) is the most common musculoskeletal problem suffered in Irish dancing. A prospective examination of risk factors for FAPI in this cohort has never been performed. STUDY DESIGN: Prospective study over 1-year. METHODS: 85 elite adult Irish dancers were screened at baseline for biopsychosocial factors and followed up prospectively each month for 1 year to evaluate FAPI rates and potential risk factors...
June 2017: Medical Problems of Performing Artists
https://www.readbyqxmd.com/read/28594504/achilles-tendon-rupture-in-elite-athletes
#13
Michael Isiah Sandlin, Cyrus E Taghavi, Timothy P Charlton
The management of acute Achilles tendon rupture in elite athletes is a current area of clinical controversy. Recent studies have reported near-equivocal outcomes in patients who undergo either nonsurgical or surgical treatment of Achilles tendon rupture; however, similar functional outcomes may not be observed in elite athletes who are at the highest levels of athletic performance and undergo nonsurgical or surgical treatment of Achilles tendon rupture. Surgeons should understand the risks and benefits of nonsurgical and surgical management of acute Achilles tendon rupture...
February 15, 2017: Instructional Course Lectures
https://www.readbyqxmd.com/read/28573322/plasmonic-gold-nanoparticles-for-detection-of-fungi-and-human-cutaneous-fungal-infections
#14
Tobiloba Sojinrin, João Conde, Kangze Liu, James Curtin, Hugh J Byrne, Daxiang Cui, Furong Tian
Fungi, which are common in the environment, can cause a multitude of diseases. Warm, humid conditions allow fungi to grow and infect humans via the respiratory, digestive and reproductive tracts, genital area and other bodily interfaces. Fungi can be detected directly by microscopy, using the potassium hydroxide test, which is the gold standard and most popular method for fungal screening. However, this test requires trained personnel operating specialist equipment, including a fluorescent microscope and culture facilities...
June 2, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28551288/routine-trimming-and-therapeutic-farriery-in-foals
#15
REVIEW
Stephen E O'Grady
Hoof care in the first few months of life is serious business and should never be taken lightly. Farriery plays a vital role in both the development of the hoof and the conformation of the limb. Management of the feet and limbs during this period will often dictate the success of the foal as a sales yearling or mature sound athlete. A sound foot care program is time-consuming, whereas assembly-line trimming is quick and easy, but the former is much more beneficial.
May 25, 2017: Veterinary Clinics of North America. Equine Practice
https://www.readbyqxmd.com/read/28544949/the-influence-of-shoe-aging-on-children-running-biomechanics
#16
Alexis Herbaut, Pascale Chavet, Maxime Roux, Nils Guéguen, Franck Barbier, Emilie Simoneau-Buessinger
Athletic children are prone to overuse injuries, especially at the heel and knee. Since footwear is an extrinsic factor of lower limb injury risk, the aim of this study was to assess the influence of shoe aging on children running biomechanics. Fourteen children active in sports participated in a laboratory biomechanical evaluation. A new pair of shoes was provided to each participant at an inclusion visit. Four months later, the participants performed a running task and their kinematics and kinetics were assessed both with their used shoes and with a new pair of shoes identical to the first...
July 2017: Gait & Posture
https://www.readbyqxmd.com/read/28538308/effect-of-electrical-myostimulation-on-the-function-of-lower-leg-muscles
#17
Viktoras Silinskas, Albinas GrŪnovas, Jurate Stanislovaitiene, Alfonsas Buliuolis, Eugenijus Trinkunas, Jonas Poderys
Electrical myostimulation (EMS) method is applied to improve skeletal muscle function. The aim of this study was to evaluate the efficacy of EMS applied to the sole and calf muscles on their strength and on maximal sprint performance. Each of 10 training sessions involved 10 seconds of stimulation and 50 seconds of rest for a total of 10 minutes. After the 10 training sessions, the maximal voluntary contraction (MVC) of right calf muscles increased by 6.0% from 830.0 ± 47.0 N to 878.0 ± 45.3 N (p ≤ 0.05)...
June 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28514214/imaging-of-acute-capsuloligamentous-sports-injuries-in-the-ankle-and-foot-sports-imaging-series
#18
James M Linklater, Catherine L Hayter, Dzung Vu
The ankle and foot are commonly injured during sporting activities. Clinical diagnosis can at times be challenging, due to the complex anatomy and multiple sites of potential injury. In the athlete, there is a reduced threshold for imaging to clarify diagnosis, guide prognosis, and treatment. Diagnostic imaging is also helpful in evaluating ongoing symptoms in the subacute or chronic setting. (©) RSNA, 2017.
June 2017: Radiology
https://www.readbyqxmd.com/read/28503415/kickboxing-power-hour-case-report-of-fifth-metatarsal-apophysitis-iselin-disease-and-its-magnetic-resonance-imaging-features
#19
Nishant Gupta, Komal Sharma, Itisha Bansal, Yogesh Kumar, Daichi Hayashi
Youth now-a-days are getting more involved in mixed martial arts, with increasing number of cases of lateral foot pain due to various causes. The differential diagnoses of lateral foot pain in the pediatric population include avulsion fracture of the fifth metatarsal base, Jones fracture, diaphyseal stress fracture as well as os vesalianum pedis. We present a case of a 15-year-old athletic boy who presented with left lateral foot pain for a few weeks. The patient was actively involved in Kickboxing as well as active running...
April 2017: Translational pediatrics
https://www.readbyqxmd.com/read/28484850/return-to-sporting-activity-after-osteochondral-autograft-transplantation-for-freiberg-disease-in-young-athletes
#20
Tetsuro Ishimatsu, Ichiro Yoshimura, Kazuki Kanazawa, Tomonobu Hagio, Takuaki Yamamoto
INTRODUCTION: Freiberg disease is defined as osteochondrosis of the metatarsal head and typically occurs in adolescents with sporting activity. This study aimed to evaluate the sporting activity of young athletes after osteochondral autograft transplantation (OAT) for Freiberg disease. MATERIALS AND METHODS: OAT for Freiberg disease was conducted in 12 consecutive patients between August 2008 and November 2014. The present study evaluated 10 of these patients who both undertook sporting activity preoperatively and were teenagers at the time of surgery...
May 8, 2017: Archives of Orthopaedic and Trauma Surgery
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