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https://www.readbyqxmd.com/read/27763582/assessment-of-the-impact-of-regular-judo-practice-on-body-posture-balance-and-lower-limbs-mechanical-output-in-six-year-old-boys
#1
Robert Walaszek, Stanislaw Sterkowicz, Wieslaw Chwala, Katarzyna Sterkowicz-Przybycien, Katarzyna Walaszek, Marcin Burdacki, Artur Klys
BACKGROUND: Physical activity is beneficial for young children. The aim is to monitor the changes in body posture and balance, as well as in the level of lower limbs mechanical output in six-year-old boys practicing judo (JU) and in a group not practicing that sport (NT). METHODS: In 12 matched pairs of boys (JU+NT) body mass and height were measured and BMI was calculated at three time points (baseline, three months, six months). Body posture was evaluated with the use of Moiré method (TT, DTK, MR, LALBC-F, DALBS)...
October 20, 2016: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/27762171/decrease-of-spasticity-after-hybrid-assistive-limb-%C3%A2-training-for-a-patient-with-c4-quadriplegia-due-to-chronic-sci
#2
Akira Ikumi, Shigeki Kubota, Yukiyo Shimizu, Hideki Kadone, Aiki Marushima, Tomoyuki Ueno, Hiroaki Kawamoto, Yasushi Hada, Akira Matsumura, Yoshiyuki Sankai, Masashi Yamazaki
CONTEXT: Recently, locomotor training with robotic assistance has been found effective in treating spinal cord injury (SCI). Our case report examined locomotor training using the robotic suit hybrid assistive limb (HAL) in a patient with complete C4 quadriplegia due to chronic SCI. This is the first report examining HAL in complete C4 quadriplegia. FINDINGS: The patient was a 19-year-old man who dislocated C3/4 during judo 4 years previously. Following the injury, he underwent C3/4 posterior spinal fusion but remained paralyzed despite rehabilitation...
October 20, 2016: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/27751193/the-role-of-echocardiography-in-the-evaluation-of-cardiac-re-modelling-and-differentiation-between-physiological-and-pathological-hypertrophy-in-teenagers-engaged-in-competitive-amateur-sports
#3
Ljiljana S Sulovic, Meho Mahmutovic, Snezana Lazic, Nenad Sulovic
: Aims "Athlete's heart" is a cardiac adaptation to long-term intensive training. The aims of this study were to show the prevalence of left ventricular hypertrophy in teenagers who participate in sports, to define the different types of cardiac re-modelling, and to differentiate between physiological and pathological hypertrophy. METHOD: Echocardiographic measurements were obtained by M-mode, two dimensional, and Doppler techniques of participants from sports and control groups...
October 18, 2016: Cardiology in the Young
https://www.readbyqxmd.com/read/27736312/evaluation-of-sex-specific-movement-patterns-in-judo-using-probabilistic-neural-networks
#4
Bianca Miarka, Katarzyna Sterkowicz-Przybycien, David H Fukuda
The purpose of the present study was to create a probabilistic neural network (PNN) to clarify the understanding of movement patterns in international judo competitions by gender. Analysis of 773 male and 638 female bouts was utilized to identify movements during the approach, gripping, attack (including biomechanical designations), groundwork, defense, and pause phases. PNN and χ(2) tests modeled and compared frequencies (p≤0.05). Women (mean[interquartile range]: 9.9[4;14]) attacked more than men (7.0[3;10]) while attempting a greater number of arm/leg lever (women: 2...
October 13, 2016: Motor Control
https://www.readbyqxmd.com/read/27736310/effects-of-a-10-week-introductory-judo-course-on-postural-control-during-a-bilateral-reactionary-gripping-task
#5
Tyler W D Muddle, David H Fukuda, Ran Wang, Joshua J Riffe, David D Church, Kyle S Beyer, Jay R Hoffman, Jeffrey R Stout
This study examined the effect of a 10-week introductory judo course on postural control during a bilateral reactionary gripping task using varied stance conditions. Twenty volunteers were divided into experimental (JDO) or control (CON) groups. Countermovement jump (CMJ) was measured and center of pressure (COP) variables were evaluated while performing a bilateral reactionary gripping task under varied stance conditions during pre and post testing. No interactions were observed for the COP variables (p>0...
October 13, 2016: Motor Control
https://www.readbyqxmd.com/read/27736247/energy-system-contributions-to-simulated-judo-matches
#6
Ursula F Julio, Valéria L G Panissa, João Victor D C Esteves, Rubiana L Cury, Marcus F Agostinho, Emerson Franchini
PURPOSE: To estimate the contribution of the three energy systems to simulated judo matches. METHODS: Twelve judo athletes (18 ± 1 years-old, 175.1 ± 5.3 cm, 74.3 ± 10.5 kg, 11.7 ± 1.5 % body fat, and 8 ± 2 years of practice) performed five combats with different durations (1, 2, 3, 4 and 5-min), against the same opponent, on different days and blinded to the duration. The estimated energy contribution for the oxidative, glycolytic and ATP-PCr systems were calculated based on V̇O2 during activity, delta of lactate and the fast phase of excess V̇O2, respectively...
October 13, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27724999/sports-preference-and-digit-ratio-2d-4d-among-female-students-in-wroc%C3%A5-aw-poland
#7
Marek Kociuba, Slawomir Kozieł, Raja Chakraborty, Zofia Ignasiak
Humans exhibit sex differences in competitiveness, sensation seeking and risk-taking attitude, which are required in sports. These attributes are often linked to prenatal testosterone (PT) exposure. The second-to-fourth digit length ratio (2D:4D) is an indicator of PT exposure. A lower 2D:4D indicates higher PT exposure and vice versa. Males generally have a lower 2D:4D than females. Sensation- and/or thrill-seeking behaviours have also been found to be negatively associated with 2D:4D. Boxing and judo are considered to be high-risk sports...
October 11, 2016: Journal of Biosocial Science
https://www.readbyqxmd.com/read/27676870/aerobic-metabolism-response-in-paraspinal-muscles-of-chronic-low-back-pain-patients-and-judo-athletes-during-an-isokinetic-trunk-extension-exercise
#8
Agathe Anthierens, Nicolas Olivier, Patrick Mucci, André Thevenon
OBJECTIVE: Low back pain is a pathology associated to a trunk extensors muscles weakness. Studies suggested that it could be associated with an inadequacy between oxygen demand and oxygen utilization by paraspinal muscles (Kell and Bhambhani, 2006). In contrast to chronic low back pain (CLBP) patients, judo athletes are characterized by a great trunk extensors muscles endurance, due to their intensive solicitation within sport practice. Our purpose was to compare aerobic metabolism in those muscles of CLBP patients with judo athletes...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27631153/optimal-interval-for-success-in-judo-world-ranking-competitions
#9
Emerson Franchini, Monica Y Takito, Rodrigo M da Silva, Seihati A Shiroma, Lance Wicks, Ursula F Julio
PURPOSE: was to determine the optimal interval between competitions for success in the different events of the judo world tour. METHODS: A total of 20,916 female and 29,900 male competition participations in the judo world tour competitions disputed between January 2009 and December 2015 were analyzed, considering the dependent variable, winning a medal, and the independent variables, level of competition. RESULTS: there was an increased probability of winning a medal when the interval was in the 10-13 week range for both male and female athletes competing at Grand Prix, Continental Championship and World Championship events, while for Grand Slam only male had increased probability of winning a medal in this interval range...
September 15, 2016: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27611084/correction-trunk-stability-trunk-strength-and-sport-performance-level-in-judo
#10
David Barbado, Alejandro Lopez-Valenciano, Casto Juan-Recio, Carlos Montero-Carretero, Jaap H van Dieën, Francisco J Vera-Garcia
[This corrects the article DOI: 10.1371/journal.pone.0156267.].
2016: PloS One
https://www.readbyqxmd.com/read/27601217/beta-alanine-supplementation-enhances-judo-related-performance-in-highly-trained-athletes
#11
Caroline de Andrade Kratz, Vitor de Salles Painelli, Kleiner Márcio de Andrade Nemezio, Rafael Pires da Silva, Emerson Franchini, Alessandro Moura Zagatto, Bruno Gualano, Guilherme Giannini Artioli
OBJECTIVES: In official judo competitions, athletes usually engage in 5-7 matches in the same day, performing numerous high-intensity efforts interspersed by short recovery intervals. Thus, glycolytic demand in judo is high and acidosis may limit performance. Carnosine is a relevant intracellular acid buffer whose content is increased with beta-alanine supplementation. Thus, we hypothesized that beta-alanine supplementation could attenuate acidosis and improve judo performance. DESIGN: Twenty-three highly-trained judo athletes were randomly assigned to receive either beta-alanine (6...
August 26, 2016: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/27562900/installation-of-multiple-aed-to-prevent-sudden-death-in-school-aged-children
#12
Takashi Higaki, Toshiyuki Chisaka, Tomozo Moritani, Masaaki Ohta, Hidemi Takata, Toshifumi Yamauchi, Youhei Yamaguchi, Kyoko Konishi, Eiichi Yamamoto, Fumihiro Ochi, Mariko Eguchi, Minenori Eguchi-Ishimae, Yoshihide Mitani, Eiichi Ishii
BACKGROUND: Recently, we have experienced a student who died of idiopathic ventricular fibrillation in a school where automated external defibrillator (AED) had been installed. The tragedy could not be prevented because the only AED in the school was installed in teachers' office situated far from the school ground where the accident took place. This occurrence prompted us to establish multiple AED system in schools. OBJECTIVE: We analyzed the effect of multiple AED system to prevent the sudden death of school aged children...
August 26, 2016: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/27561090/comparison-of-neuropsychological-test-scores-of-high-school-athletes-in-high-and-low-contact-sports-a-replication-study
#13
William T Tsushima, Andrea M Siu, Nozomi Yamashita, Ross S Oshiro, Nathan M Murata
This replication study re-examined the neuropsychological effects of participation in high and low contact youth sports. Modeled after a recently published investigation, two contact sport groups of participants ages 12 to 18 were formed based on the rate of concussion in their respective sport, with the assumption that more head impacts and neuropsychological effects occur in high contact sports that have a greater number of reported concussions as compared with low contact sports. The preseason baseline ImPACT neuropsychological test scores and symptom scores of non-concussed youth athletes in a High Contact Sport (football, n = 139) and a Low Contact Sport (basketball, baseball, soccer, wrestling, volleyball, paddling, and cheerleading, n = 57) were compared...
August 25, 2016: Applied Neuropsychology. Child
https://www.readbyqxmd.com/read/27548785/sex-and-weight-category-differences-in-time-motion-analysis-of-elite-judo-athletes-implications-for-assessment-and-training
#14
Katarzyna Sterkowicz-Przybycień, Bianca Miarka, David H Fukuda
The purpose of this investigation was to support training program development through the comparison of combat and pause phases during elite male and female judo competition in athletes of varying weight categories. A total of 1,411 video recorded judo matches between athletes that qualified for the 2012 Olympic Games were analyzed. Within the matches, 111,203 competitive situations were categorized as combat (with sub-phases of approach, gripping, attack, defense, and groundwork) or pause phases. Time motion analysis data were compared between extra light, light, middle, and heavyweight categories for men and women...
August 18, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27536641/descriptive-epidemiology-of-symptomatic-femoroacetabular-impingement-in-young-athlete-single-center-study
#15
Woo-Yong Lee, Chan Kang, Deuk-Soo Hwang, Je-Hyung Jeon, Long Zheng
PURPOSE: The purpose of this study was to determine the prevalence of symptomatic femoroacetabular impingement (FAI) in athletic patients. MATERIALS AND METHODS: From July 2003 to May 2013, 388 patients (422 hips) who underwent arthroscopic surgery for FAI were evaluated demographic characteristics. The patients' age, gender, diagnosis, and type of sports were analyzed using medical records and radiography. RESULTS: Among 422 hips in 388 patients, 156 hips were involved with sports...
March 2016: Hip & Pelvis
https://www.readbyqxmd.com/read/27530614/injuries-sustained-by-the-mixed-martial-arts-athlete
#16
Andrew R Jensen, Robert C Maciel, Frank A Petrigliano, John P Rodriguez, Adam G Brooks
CONTEXT: Mixed martial arts (MMA) is rapidly growing in popularity in the United States and abroad. This combat sport joins athletes from a wide variety of martial art disciplines, each with characteristic and distinguishing injury profiles, together in competition. Because of increasing participation by professionals and amateurs alike, injuries sustained by MMA athletes have been on the rise. EVIDENCE ACQUISITION: A review of relevant publications using the search term mixed martial arts and each of its component combat sports (eg, Muay Thai, Brazilian jiu-jitsu) from 1980 through 2015 was completed using PubMed and Google Scholar...
August 16, 2016: Sports Health
https://www.readbyqxmd.com/read/27509501/implementation-and-analysis-of-ism-2-4-ghz-wireless-sensor-network-systems-in-judo-training-venues
#17
Peio Lopez-Iturri, Erik Aguirre, Leyre Azpilicueta, José Javier Astrain, Jesús Villadangos, Francisco Falcone
In this work, the performance of ISM 2.4 GHz Wireless Sensor Networks (WSNs) deployed in judo training venues is analyzed. Judo is a very popular martial art, which is practiced by thousands of people not only at the competition level, but also as part of physical education programs at different school levels. There is a great variety of judo training venues, and each one has specific morphological aspects, making them unique scenarios in terms of radio propagation due to the presence of furniture, columns, equipment and the presence of human beings, which is a major issue as the person density within this kind of scenarios could be high...
2016: Sensors
https://www.readbyqxmd.com/read/27508148/interaction-of-actn3-gene-polymorphism-and-muscle-imbalance-effects-on-kinematic-efficiency-in-combat-sports-athletes
#18
Hansang Jung, Namju Lee, Sok Park
PURPOSE: The purpose of this study was to determine the interaction of ACTN3 gene polymorphism and muscle imbalance effects on kinematic efficiency changes in combat sports athletes. METHODS: Six types of combat sports athletes (Judo, Taekwondo, boxing, kendo, wrestling, and Korean Ssi-reum) participated in the study. ATCN3 gene polymorphism and muscle imbalance in lower extremity were evaluated followed by analysis of differences of moment in hip, knee, and ankle joint during V-cut jumping and stop...
June 2016: Journal of Exercise Nutrition & Biochemistry
https://www.readbyqxmd.com/read/27471037/modification-and-validation-of-the-triglyceride-to-hdl-cholesterol-ratio-as-a-surrogate-of-insulin-sensitivity-in-white-juveniles-and-adults-without-diabetes-mellitus-the-single-point-insulin-sensitivity-estimator-spise
#19
Katharina Paulmichl, Mensud Hatunic, Kurt Højlund, Aleksandra Jotic, Michael Krebs, Asimina Mitrakou, Francesca Porcellati, Andrea Tura, Peter Bergsten, Anders Forslund, Hannes Manell, Kurt Widhalm, Daniel Weghuber, Christian-Heinz Anderwald
BACKGROUND: The triglyceride-to-HDL cholesterol (TG/HDL-C) ratio was introduced as a tool to estimate insulin resistance, because circulating lipid measurements are available in routine settings. Insulin, C-peptide, and free fatty acids are components of other insulin-sensitivity indices but their measurement is expensive. Easier and more affordable tools are of interest for both pediatric and adult patients. METHODS: Study participants from the Relationship Between Insulin Sensitivity and Cardiovascular Disease [43...
September 2016: Clinical Chemistry
https://www.readbyqxmd.com/read/27457913/neuromuscular-responses-to-short-term-resistance-training-with-traditional-and-daily-undulating-periodization-in-adolescent-elite-judoka
#20
Boris Ullrich, Thiemo Pelzer, Sergio Oliveira, Mark Pfeiffer
Ullrich, B, Pelzer, T, Oliveira, S, and Pfeiffer, M. Neuromuscular responses to short-term resistance training with traditional and daily undulating periodization in adolescent elite judoka. J Strength Cond Res 30(8): 2083-2099, 2016-The influence of different periodization models on neuromuscular outcomes after short-term strength training periods has not been examined in adolescent athletes. Eleven elite judoka (age: 14.8 ± 0.6 years, height: 163.2 ± 7.5 cm, body mass: 57.3 ± 11.1 kg, 5 boys/6 girls, and strength training experience: 2...
August 2016: Journal of Strength and Conditioning Research
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