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https://www.readbyqxmd.com/read/29910349/differences-among-three-measures-of-reaction-time-based-on-hand-laterality-in-individual-sports
#1
Dana Badau, Bilgehan Baydil, Adela Badau
(1) Aim: The study aimed at assessing simple-reaction, recognition and cognitive-reaction times to visual stimuli among student athletes: boxing, gymnastics, taekwondo, judo, karate and wrestling, using computer games tests. (2) Methods: Our study involved 332 students and athletes. We applied three types of computer tests to measure the dominant and non-dominant hands: the simple motor reaction time through the Human Benchmark test, the recognition time by the Hit-the-dots and the cognitive reaction time by the Trail making test part B...
May 19, 2018: Sports
https://www.readbyqxmd.com/read/29844991/physical-fitness-predicts-technical-tactical-and-time-motion-profile-in-simulated-judo-and-brazilian-jiu-jitsu-matches
#2
Victor S Coswig, Paulo Gentil, João C A Bueno, Bruno Follmer, Vitor A Marques, Fabrício B Del Vecchio
Background: Among combat sports, Judo and Brazilian Jiu-Jitsu (BJJ) present elevated physical fitness demands from the high-intensity intermittent efforts. However, information regarding how metabolic and neuromuscular physical fitness is associated with technical-tactical performance in Judo and BJJ fights is not available. This study aimed to relate indicators of physical fitness with combat performance variables in Judo and BJJ. Methods: The sample consisted of Judo ( n  = 16) and BJJ ( n  = 24) male athletes...
2018: PeerJ
https://www.readbyqxmd.com/read/29809054/effects-of-rapid-weight-loss-on-balance-and-reaction-time-in-elite-judo-athletes
#3
Jose Morales, Carla Ubasart, Mónica Solana-Tramunt, Luis-Millán González, David Fukuda, Emerson Franchini
Balance, reaction time, and strength are key factors affecting judo performance. While ample research exists examining potential strength changes caused by weight loss prior to competition, changes in balance and reaction time, have been overlooked. PURPOSE: The objective of this study was to examine the effects of rapid and progressive weight loss (RWL and PWL) on balance, reaction time, and strength in a group of elite judo athletes. METHODS: 38 female and male judo athletes (age = 20...
May 29, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29795746/global-active-stretching-sga%C3%A2-practice-for-judo-practitioners-physical-performance-enhancement
#4
Heleno Almeida, Raphael F DE Souza, Felipe J Aidar, Alisson G DA Silva, Ricardo P Regi, Afrânio A Bastos
In order to analyze the Global Active Stretching (SGA®) practice on the physical performance enhancement in judo-practitioner competitors, 12 male athletes from Judo Federation of Sergipe (Federação Sergipana de Judô), were divided into two groups: Experimental Group (EG) and Control Group (CG). For 10 weeks, the EG practiced SGA® self-postures and the CG practiced assorted calisthenic exercises. All of them were submitted to a variety of tests (before and after): handgrip strength, flexibility, upper limbs' muscle power, isometric pull-up force, lower limbs' muscle power (squat-jump - SJ and countermovement jump - CMJ) and Tokui Waza test...
2018: International Journal of Exercise Science
https://www.readbyqxmd.com/read/29791605/athlete-s-heart-in-a-brazilian-paralympic-judo-team-case-series-study
#5
Japy Angelini Oliveira Filho, Maria Beatriz Monteiro Barros, Ana Fátima Salles, Leandro Santini Echenique, Orlando Campos Filho, Rui Manoel Santos Póvoa
BACKGROUND: Athlete's heart is a term describing the cardiovascular effects of long-term conditioning among highly trained athletes. It is a variation of normal standards. DESIGN AND SETTING: Case series study at the cardiology division of a public university hospital. METHODS: We studied 14 visually handicapped paralympic athletes (8 men) in the national judo team. They were 26.3 ± 6.4 years old, with body mass index 25 ± 14, and had been practicing judo for 9...
March 2018: São Paulo Medical Journal, Revista Paulista de Medicina
https://www.readbyqxmd.com/read/29788859/female-judo-athletes-physical-test-performances-are-unrelated-to-technical-tactical-competition-skills
#6
Rafael L Kons, Juliano Dal Pupo, Jonathan Ache-Dias, Daniele Detanico
This study analyzed the relationship between generic and judo-specific physical test performances and technical-tactical competition performances among 19 female judo athletes. Participant data were gathered in two stages: (a) physical tests-countermovement jump (CMJ), handgrip strength, Special Judo Fitness Test and Judogi Grip Strength Test; and (b) match performances recorded for technical-tactical analysis. Pearson's linear correlation and multiple linear regression analysis showed no significant correlations between any technical-tactical parameter and judo-specific physical tests...
January 1, 2018: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/29782218/postural-control-and-physiological-responses-to-a-simulated-match-in-u-20-judo-competitors
#7
Luis Santos, Javier Fernández-Río, Eliseo Iglesias-Soler, Miguel Blanco-Traba, Markus Due Jakobsen, Vicente González-Díez, Emerson Franchini, Carlos Gutiérrez, Xurxo Dopico-Calvo, Eduardo Carballeira-Fernández, William Amonette, Oscar Suman
The aim was to evaluate the effects of judo combat on the athletes' postural control (PC) and physiological loading before, during and after a simulated match. Seventeen under-20 regional and national level athletes completed one modified 7-min match. At baseline, during the combat (3rd and 7th minutes) and 2-min post-match centre of pressure (CoP) parameters were assessed. Heart rate (HR), blood lactate (BLa) and rating of perceived exertion (RPE) and local RPE (LRPE) were collected. Significant increments were observed in CoP mean positioning and velocity at 3rd and 7th minutes, but the CoP deviation in both axes was unaffected...
May 21, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29741447/health-effects-of-wrist-loading-sports-during-youth-a-systematic-literature-review
#8
Laura S Kox, P Paul F M Kuijer, Dagmar A J Thijssen, Gino M M J Kerkhoffs, Rick R van Rijn, Monique H W Frings-Dresen, Mario Maas
BACKGROUND: The benefits and risks of performing popular wrist-loading sports at a young age have not been investigated systematically. We aimed to evaluate positive and negative long-term wrist-related health effects of sports performance requiring repetitive wrist loading during youth. METHODS: Six databases were searched for cohort and cross-sectional studies. Three investigators selected studies evaluating quantitatively measured health effects of upper extremities in athletes practicing wrist-loading sports (gymnastics, tennis, volleyball, field hockey, rowing, and judo) for minimally 4 months before the age of 18...
May 9, 2018: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/29740559/comparison-of-special-judo-fitness-test-and-dynamic-and-isometric-judo-chin-up-tests-performance-and-classificatory-tables-development-for-cadet-and-junior-athletes
#9
Marcus Fábio Agostinho, José Alfredo Olivio Junior, Nemanja Stankovic, Raquel Escobar-Molina, Emerson Franchini
The aims of this work were to compare the performances of male and female cadet and junior judo athletes and to develop classificatory tables to these judo-specific tests for international-level from these ages. Data collected during training camps of male and female cadet and junior judo teams from three nations (Brazil, Serbia, and Spain) were analyzed, totalizing 252 individual results of special judo fitness test (SJFT), and 222 and 208 of dynamic and isometric judogi chin-up tests, respectively. Juniors performed better than cadets in the SJFT, with higher number of throws in A, B, C, and total ( P <0...
April 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29692739/tests-for-the-assessment-of-sport-specific-performance-in-olympic-combat-sports-a-systematic-review-with-practical-recommendations
#10
Helmi Chaabene, Yassine Negra, Raja Bouguezzi, Laura Capranica, Emerson Franchini, Olaf Prieske, Hamdi Hbacha, Urs Granacher
The regular monitoring of physical fitness and sport-specific performance is important in elite sports to increase the likelihood of success in competition. This study aimed to systematically review and to critically appraise the methodological quality, validation data, and feasibility of the sport-specific performance assessment in Olympic combat sports like amateur boxing, fencing, judo, karate, taekwondo, and wrestling. A systematic search was conducted in the electronic databases PubMed, Google-Scholar, and Science-Direct up to October 2017...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29619792/degree-of-vision-impairment-influence-the-fight-outcomes-in-the-paralympic-judo-a-10-year-retrospective-analysis
#11
Evgeny Mashkovskiy, Ayshat Magomedova, Evgeny Achkasov
INTRODUCTION: In the International Blind Sports Federation (IBSA) judo Sports Classes B1, B2, and B3 compete against each other within weight- and gender-specific categories. B1 athletes are totally blind, whereas B2 and B3 are partially sighted. PURPOSE: The aim of this study is to examine the impact of the degree of vision impairment on fight outcomes. METHODS: We analysed 1,936 fights from official competitions and compare win ratio in fights between discordant Sports Classes...
April 4, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29563884/symptoms-of-anxiety-and-depression-in-young-athletes-using-the-hospital-anxiety-and-depression-scale
#12
Stephanie Weber, Christian Puta, Melanie Lesinski, Brunhild Gabriel, Thomas Steidten, Karl-Jürgen Bär, Marco Herbsleb, Urs Granacher, Holger H W Gabriel
Elite young athletes have to cope with multiple psychological demands such as training volume, mental and physical fatigue, spatial separation of family and friends or time management problems may lead to reduced mental and physical recovery. While normative data regarding symptoms of anxiety and depression for the general population is available (Hinz and Brähler, 2011), hardly any information exists for adolescents in general and young athletes in particular. Therefore, the aim of this study was to assess overall symptoms of anxiety and depression in young athletes as well as possible sex differences...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29551273/rating-of-perceived-exertion-is-a-stable-and-appropriate-measure-of-workload-in-judo
#13
Sally J Bromley, Michael K Drew, Andrew McIntosh, Scott Talpey
OBJECTIVES: Heart rate (HR), blood lactate concentration [La] and/or rating of perceived exertion (RPE) have been utilised to monitor judo training load in technical and randori (competition training) sessions, but are yet to be investigated in mixed sessions containing both elements. Therefore the purpose of this study was to: (1) determine the stability of these variables, and (2) to assess the efficacy of RPE as a load variable for mixed judo sessions. DESIGN: Cross-sectional study...
March 15, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29526262/a-comparison-of-penetration-and-damage-caused-by-different-types-of-arrowheads-on-loose-and-tight-fit-clothing
#14
Nichole MacPhee, Anne Savage, Nikolas Noton, Eilidh Beattie, Louise Milne, Joanna Fraser
Bows and arrows are used more for recreation, sport and hunting in the Western world and tend not to be as popular a weapon as firearms or knives. Yet there are still injuries and fatalities caused by these low-velocity weapons due to their availability to the public and that a licence is not required to own them. This study aimed to highlight the penetration capabilities of aluminium arrows into soft tissue and bones in the presence of clothing. Further from that, how the type and fit of clothing as well as arrowhead type contribute to penetration capacity...
March 2018: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/29511658/effect-of-official-judo-matches-on-handgrip-strength-and-perceptual-responses
#15
Rafael Lima Kons, Juliano Dal Pupo, Jonathan Ache-Dias, Thyago Garcia, Romário Rodrigues da Silva, Luiz Felipe Guarise Katicips, Daniele Detanico
This study aimed to verify the effect of judo matches on handgrip strength and perceptual responses during an official tournament in medalists and nonmedalists. Thirty-four male judo athletes participated in an official judo tournament. Before the first match and immediately after each match, maximum isometric handgrip strength and rate of perceived exertion overall and in specific areas were assessed. Analysis of variance for repeated measures was used to compare variables before the first match and after each match, and t -test was used to compare medalists and nonmedalists with the level of significance set at 5%...
February 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29491232/molecular-epidemiology-of-trichophyton-tonsurans-the-causative-dermatophyte-of-the-tinea-gladiatorum-epidemic-in-japan-between-2011-and-2015
#16
Yuichi Sakata, Tsuyoshi Ushigami, Kazushi Anzawa, Takashi Mochizuki
Trichophyton tonsurans, a major pathogen causing tinea capitis and tinea corporis, has been isolated from contact sports-players in Japan. The molecular types of 208 strains isolated between 2011 and 2015 were determined to understand the contemporary Japanese epidemic. Of these, 142 were isolated from practitioners of judo, 28 from wrestlers, 7 from sumo wrestlers, and 31 from individuals with unknown backgrounds. Based on length polymorphisms of the non-transcribed spacer (NTS) region of the ribosomal RNA gene, these 208 strains were divided into 3 subtypes: NTS I (204; 98...
March 22, 2018: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29472740/physiological-and-performance-changes-in-national-and-international-judo-athletes-during-block-periodization-training
#17
Lucas Marques, Emerson Franchini, Gustavo Drago, Marcelo S Aoki, Alexandre Moreira
Block periodization (BP) has been proposed as an alternative approach for application in the context of high-level sports. Despite its growing acceptance, there is no empirical evidence of BP adoption in high-level judo athletes. Therefore, this study aimed to compare the maximal strength, muscle power, judo-specific performances, and hormonal concentration changes of state/national level (NG) and international level (IG) judo athletes subjected to BP. Twenty-one elite judo athletes (international level = 10; 21...
December 2017: Biology of Sport
https://www.readbyqxmd.com/read/29444538/-effects-of-judo-specific-resistance-training-on-kinetic-and-electromyographic-parameters-of-pulling-exercises-in-judo-athletes
#18
Norman Helm, Olaf Prieske, Thomas Muehlbauer, Tom Krüger, Urs Granacher
BACKGROUND:  In judo, rapid force production during pulling movements is an important component of athletic performance, which is why this capacity needs to be specifically exercised in judo. This study aimed at examining the effects of a judo-specific resistance training program using a judo ergometer system (PTJ) versus a traditional resistance training regime using a partner (PTP) on kinetics and muscle activity of judo-specific pulling exercises. METHOD:  Twenty-four male judo athletes (age: 22 ± 4 years, training experience: 15 ± 3 years) were randomly assigned to two groups...
February 14, 2018: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/29441036/does-blue-uniform-color-enhance-winning-probability-in-judo-contests
#19
Peter D Dijkstra, Paul T Y Preenen, Hans van Essen
The color of an athlete's uniform may have an effect on psychological functioning and consequently bias the chances of winning contests in sport competition. Several studies reported a winning bias for judo athletes wearing a blue outfit relative to those wearing a white outfit. However, we argue there is no winning bias and that previous studies were confounded and based on small and specific data sets. We tested whether blue biases winning in judo using a very extensive judo data set (45,874 contests from all international judo tournaments between 2008 and 2014)...
2018: Frontiers in Psychology
https://www.readbyqxmd.com/read/29387639/prevalence-techniques-and-knowledge-of-rapid-weight-loss-amongst-adult-british-judo-athletes-a-questionnaire-based-study
#20
Nikos Malliaropoulos, Shaan Rachid, Vasileios Korakakis, Stephen Andrew Fraser, Georgios Bikos, Nicola Maffulli, Manuela Angioi
Background: No investigation has analysed the RWL approaches since new rules by the International Judo Federation (IJF) regarding weigh-ins have been implemented in international competitions in 2014. The current study analyses the prevalence, most common methods and knowledge surrounding the effects of rapid weight loss (RWL) amongst adult UK judo athletes. Additionally, it examines differences in rapid weight loss behaviour (RWLB) between gender, weight-class, competitive level, age RWL began and "high"/"low" knowledge athletes...
July 2017: Muscles, Ligaments and Tendons Journal
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