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https://www.readbyqxmd.com/read/29351948/order-from-chaos-unravelling-the-determinants-of-mixed-martial-arts-performance
#1
Lachlan Peter James
No abstract text is available yet for this article.
January 19, 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29347856/systematic-review-of-injuries-in-mixed-martial-arts
#2
Roger E Thomas, Bennett C Thomas
OBJECTIVES: To assess injury rates in all mixed martial arts (MMA) studies. METHODS: Six online databases were searched until November 2017 including MEDLINE, EMBASE, CINAHL, Web of Science, PubMed, Google/Google Scholar and conference proceedings. All included studies were entered in Pub Med Single Citation Matcher and all citation chains followed. Abstracts and titles were assessed for relevance, data independently abstracted and risk of bias for all competition studies evaluated independently by two reviewers...
January 19, 2018: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/29330780/safety-in-mixed-martial-arts-a-7-year-review-of-cancelled-mma-bouts-in-calgary-alberta-during-the-pre-bout-medical-examination-period
#3
Gwynn Curran-Sills
BACKGROUND: Presently, there is no literature that examines the reasons for the cancellation of amateur or professional mixed martial arts (MMA) bouts. The purpose of this study was to review the circumstances that lead to the cancellation of MMA bouts by Calgary ringside physicians during the pre-bout examination period and to identify any emerging patterns that may guide the regulatoin of this sport. METHODS: The case-series  was constructed from the Calgary Combative Sports Commission pre-bout examination records and the medical records submitted by each athlete from January 2010 to December 2016...
January 12, 2018: Sports Medicine—Open
https://www.readbyqxmd.com/read/29290603/axial-load-transmission-through-the-elbow-during-forearm-rotation
#4
Jung-Taek Hwang, Youngbok Kim, Daniel R Bachman, Maegan N Shields, Lawrence J Berglund, Alessandro T Fitzsimmons, James S Fitzsimmons, Shawn W O'Driscoll
BACKGROUND: Forearm rotation is closely associated with the axiorotational force transmission through the elbow joint. A technique has been developed to study the transmission of force across the radiocapitellar and ulnotrochlear joints during forearm rotation. METHODS: Ten human cadaveric upper limbs were prepared on a custom-designed apparatus that permits the application of extrinsic axial loads across an intact cadaveric elbow joint. A force-sensitive transducer was inserted into the elbow joint of each cadaver...
December 28, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29283792/weight-loss-strategies-in-combat-sports-and-concerning-habits-in-mixed-martial-arts
#5
Oliver R Barley, Dale W Chapman, Chris R Abbiss
PURPOSE: Combat sports are typically divided into weight classes and body mass manipulation to reach a weight class is commonplace. Previous research suggests that mixed martial arts (MMA) weight loss practices may be more extreme than other combat sports. We sought to investigate the magnitude of weight lost and prevalence of weight loss strategies in different combat sports. METHODS: Competitors (n=637) from Brazilian jiu jitsu (BJJ), boxing, judo, MMA, muay Thai/kickboxing (MT/K), taekwondo (TKD) and wrestling completed an online questionnaire seeking information regarding their weight loss practices...
December 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29259831/sport-related-portal-vein-thrombosis-an-unusual-complication
#6
Igor Dumic, Nikola Tankosic, Milica Stojkovic Lalosevic, Tamara Alempijevic
Portal vein thrombosis (PVT) is an uncommon condition usually associated with hypercoagulable states or liver cirrhosis. PVT due to sports-related injuries is rarely reported and, to the best of our knowledge, only two cases have been reported thus far. Brazilian jiu-jitsu (BJJ) is a form of martial arts and is considered very safe with minimal risk for injury. It has growing popularity worldwide. Here, we report the first case of PVT secondary to abdominal trauma related to the practice of (BJJ) in an otherwise healthy 32-year-old man with no other traditional risk factors for PVT...
2017: Case Reports in Hepatology
https://www.readbyqxmd.com/read/29207537/a-robust-indoor-outdoor-navigation-filter-fusing-data-from-vision-and-magneto-inertial-measurement-unit
#7
David Caruso, Alexandre Eudes, Martial Sanfourche, David Vissière, Guy Le Besnerais
Visual-inertial Navigation Systems (VINS) are nowadays used for robotic or augmented reality applications. They aim to compute the motion of the robot or the pedestrian in an environment that is unknown and does not have specific localization infrastructure. Because of the low quality of inertial sensors that can be used reasonably for these two applications, state of the art VINS rely heavily on the visual information to correct at high frequency the drift of inertial sensors integration. These methods struggle when environment does not provide usable visual features, such than in low-light of texture-less areas...
December 4, 2017: Sensors
https://www.readbyqxmd.com/read/29194182/effect-of-post-activation-potentiation-induced-by-elastic-resistance-on-kinematics-and-performance-in-a-roundhouse-kick-of-trained-martial-arts-practitioners
#8
Håkon Strand Aandahl, Erna Von Heimburg, Roland Van den Tillaar
The aim of this study was to examine if kicking with elastic resistance during warm-up could initiate Post-Activation Potentiation (PAP), and thereby positively influence kinematics and performance on subsequent explosive roundhouse kicking. Five woman and eleven men (n=16) with a background in kickboxing (n=10) and/or TaeKwonDo (n=6) performed two warm-up strategies with three subsequent test-kicks 5-8 minutes after a PAP inducing exercise. Kicking performance, defined as roundhouse kicking velocity with the foot, was measured using 3D motion capture (500 Hz) with a 15 marker lower body 3D model...
November 29, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29192550/kinematic-analysis-of-proximal-to-distal-and-simultaneous-motion-sequencing-of-straight-punches
#9
Philip Xaver Fuchs, Stefan Josef Lindinger, Hermann Schwameder
Consecutive proximal-to-distal sequencing of motion is considered to be integral for generating high velocity of distal segments in many sports. Simultaneous usage of proximal and distal segments as seen in martial arts is by far less well investigated. Therefore, the aim of the study was to characterise and differentiate the concepts of consecutive (CSM) and simultaneous (SSM) sequence of motion in straight reverse punches as practised in Practical Wing Chun. Four experienced martial artists succeeded an eligibility test for technical proficiency in both concepts and performed a total number of 20 straight punches per concept...
December 1, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/29182903/total-laparoscopic-splenectomy-for-giant-epidermoid-cyst-a-case-report
#10
P Lobascio, G Carbotta, R Laforgia, S Fedele, M G Sederino, M Minafra, A Delvecchio, F Ferrarese, N Palasciano
INTRODUCTION: Splenic cysts are benign tumors, accidentally detected using US or CT scan. They are classified into true cyst (primary, 25%) and pseudocyst (secondary, 75%). Conventional treatment of splenic cyst, especially giant, symptomatic and complicated has been open or laparoscopic total splenectomy. Recently, partial splenectomy is recommended as well to preserve its hematopoietic function and homeostasis of blood, but it is not considered safe for complications as intra and post operative bleeding...
July 2017: Il Giornale di Chirurgia
https://www.readbyqxmd.com/read/29157151/health-benefits-of-hard-martial-arts-in-adults-a-systematic-review
#11
Sandra Origua Rios, Jennifer Marks, Isaac Estevan, Lisa M Barnett
Participation in organized sports is promoted as a means of increasing physical activity levels and reducing chronic disease risk in adults. Hard martial arts practice (i.e. using body contact techniques), has gained in popularity over time. This review explores the evidence for health benefits of "hard" martial arts practice within the adult population. A systematic electronic database search was conducted, and quality assessments applied the Effective Public Health Practice Project tool. Twenty-eight studies met the inclusion criteria, examining balance, cognitive function, muscular skeletal status, psychological, cardiovascular fitness, and metabolic effects...
November 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29152471/internal-carotid-artery-dissection-in-brazilian-jiu-jitsu
#12
Zeferino Demartini, Maxweyd Rodrigues Freire, Roberto Oliver Lages, Alexandre Novicki Francisco, Felipe Nanni, Luana A Maranha Gatto, Gelson Luis Koppe
Carotid artery dissection is a significant cause of stroke in young patients. It may be asymptomatic and go undiagnosed, or minimal transient manifestations may follow, commanding a higher index of suspicion than ordinarily exists to avoid misdiagnosis. Reported herein is a 27-year-old man who suffered extracranial internal carotid artery dissection while practicing a Brazilian Jiu-Jitsu submission maneuver. The patient's condition suddenly deteriorated one week later due to distal embolization and stroke. Despite endovascular treatment, with stenting of the cervical carotid artery, neurologic deficits remained...
June 2017: Journal of Cerebrovascular and Endovascular Neurosurgery
https://www.readbyqxmd.com/read/29125560/human-actions-analysis-templates-generation-matching-and-visualization-applied-to-motion-capture-of-highly-skilled-karate-athletes
#13
Tomasz Hachaj, Marcin Piekarczyk, Marek R Ogiela
The aim of this paper is to propose and evaluate the novel method of template generation, matching, comparing and visualization applied to motion capture (kinematic) analysis. To evaluate our approach, we have used motion capture recordings (MoCap) of two highly-skilled black belt karate athletes consisting of 560 recordings of various karate techniques acquired with wearable sensors. We have evaluated the quality of generated templates; we have validated the matching algorithm that calculates similarities and differences between various MoCap data; and we have examined visualizations of important differences and similarities between MoCap data...
November 10, 2017: Sensors
https://www.readbyqxmd.com/read/28967239/effect-of-martial-arts-training-on-il-6-and-other-immunological-parameters-among-trinidadian-subjects
#14
Geeta Kurhade, B Shivananda Nayak, Arvind Kurhade, Chandrasekhar Unakal, Krutika Kurhade
BACKGROUND: Persistent bouts of extended exercise and heavy training are associated with depressed immune cell function. It has recently been demonstrated that IL-6 is produced locally in contracting skeletal muscles and acts on a wide range of tissues. Larger amounts of IL-6 are produced in response to exercise than any other cytokines. Though the majority of existing data obtained following prolonged exercise, it remains to be explained the effect of martial arts training on IL-6 and other immunological parameters and associated changes to the duration of this type of exercise...
September 29, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28944643/injury-rates-in-martial-art-athletes-anthropometric-parameters-and-training-volume-but-not-foot-morphology-indexes-are-predictive-risk-factors-for-lower-limb-injuries
#15
Jacopo A Vitale, Tito Bassani, Fabio Galbusera, Alberto Bianchi, Nicolò Martinelli
BACKGROUND: Previous studies attempted to identify possible risk factors for acute and overuse injuries in several sports disciplines such as running, gymnastics or team sports. Given the lack of scientific works focused on risk factors for lower limb injuries in martial arts, the present study was aimed to investigate foot anatomy, anthropometric measures, and other background information as possible risk factors of injury in barefoot athletes practicing judo, karate, kung fu, thai boxe, or aikido...
September 22, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28933715/rating-of-perceived-exertion-for-quantification-of-training-and-combat-loads-during-combat-sport-specific-activities-a-short-review
#16
Maamer Slimani, Philip Davis, Emerson Franchini, Wassim Moalla
The aim of this short review was to summarize data pertaining to the rating of perceived exertion (RPE) methods (RPE value and session-RPE) during combat sport-specific activities (i.e., competition and training) based on many factors, including contest type (i.e., official vs. simulated vs. training), combat rounds, age of participants and muscle groups, and their correlation with physiological variables (i.e., blood lactate concentration [La] and heart rate [HR]). The current review shows higher RPE in a match of mixed martial arts (MMAs) than Brazilian jiu-jitsu and kickboxing matches and during the competitive period compared with the precompetitive period...
October 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28932751/return-to-sports-and-recurrences-after-arthroscopic-anterior-shoulder-stabilization-in-martial-arts-athletes
#17
Maximiliano Ranalletta, Luciano A Rossi, Adrian Sirio, Fernando Diaz Dilernia, Agustin Bertona, Gastón D Maignon, Santiago L Bongiovanni
BACKGROUND: The high demands to the glenohumeral joint and the violent shoulder blows experienced during martial arts (MA) could compromise return to sports and increase the recurrence rate after arthroscopic stabilization for anterior shoulder instability in these athletes. PURPOSE: To report the functional outcomes, return to sports, and recurrences in a series of MA athletes with anterior shoulder instability treated with arthroscopic stabilization with suture anchors...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28930879/repeat-effort-performance-is-reduced-24-h-following-acute-dehydration-in-mixed-martial-arts-athletes
#18
Oliver R Barley, Fiona Iredale, Dale W Chapman, Amanda Hopper, Chris Abbiss
This study sought to determine the influence of acute dehydration on physical performance and physiology in Mixed Martial Arts (MMA). MMA athletes (n=14; age: 23±4 years), completed in a randomised counterbalanced order a dehydration protocol, (DHY: 3 h cycling at 60 W in 40°C to induce 5% dehydration) or thermoneutral control (25°C: CONT) exercise, followed by ad libitum fluid/food intake. Performance testing (a repeat sled push test, medicine ball chest throw and vertical jump) was completed 3 and 24 h following the intervention, while urine and blood samples were collected before, 20 min, 3 and 24 h following the intervention...
September 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28886548/investigating-the-impact-of-different-sport-trainings-on-particulate-matter-resuspension-in-a-sport-center-using-well-characterized-reference-instruments-and-a-low-cost-monitor
#19
Mehdi Amouei Torkmahalleh, Karakat Kabay, Meruyet Bazhanova, Obaidullah Mohiuddin, Madina Obaidullah, Soudabeh Gorjinezhad
The present study investigated the exposure of teenagers, adults, and students to PM1, PM2.5, PM4, PM10, particle number concentration at two sport facilities of Nazarbayev University including Gymnastics Hall and Multi-purpose Hall. Measurements were conducted during variety of sport training sessions including soccer, basketball, volleyball, Mixed Martial Arts (MMA), boxing, table tennis, etc. A low-cost instrument, Dylos was employed to compare its performance against two TSI instruments. In overall, the Dylos showed acceptable peaks when the source of particle resuspension was present...
January 15, 2018: Science of the Total Environment
https://www.readbyqxmd.com/read/28853120/martial-arts-based-high-intensity-interval-training-in-the-rehabilitation-of-combat-amputees
#20
Gavin L Mills, David J Tennent, Joseph F Aldrete, Anthony E Johnson
No abstract text is available yet for this article.
July 2017: U.S. Army Medical Department Journal
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