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https://www.readbyqxmd.com/read/28724040/cardiac-remodeling-indicators-in-adolescent-athletes
#1
Joaquim Castanheira, João Valente-Dos-Santos, Daniela Costa, Diogo Martinho, Jorge Fernandes, João Duarte, Nuno Sousa, Vasco Vaz, Luis Rama, António Figueiredo, Manuel Coelho-E-Silva
Objective: The idea that different sports and physical training type results in different cardiac adaptations has been widely accepted. However, this remodelling process among different sport modalities is still not fully understood. Thus, the current study aims to investigate the heart morphology variation associated with a set of different modalities characterized by distinct models of preparation and different methods and demands of training and completion. Method: The sample comprises 42 basketball players, 73 roller hockey players, 28 judo athletes and 21 swimmers...
May 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28714773/impact-of-martial-arts-judo-karate-and-kung-fu-on-bone-mineral-density-gains-in-adolescents-of-both-genders-9-month-follow-up-martial-arts-and-bone-density
#2
Igor H Ito, Han C G Kemper, Ricardo R Agostinete, Kyle R Lynch, Diego G D Christofaro, Enio R Ronque, Rômulo A Fernandes
PURPOSE: To compare bone mineral density gains in adolescents of both genders stratified according to different martial art styles in a 9-month follow-up study. METHODS: The longitudinal study consisted of 29 adolescents of both genders and age between 11 and 17 years stratified into control group ([CG] not engaged in any sport) and 50 fighters (Kung-fu / karate-KF / KT, n = 29; Judo, n = 21). All 79 subjects underwent anthropometric measures (weight, height, leg length and height set), dual energy x-ray absorptiometry (Bone Mineral Density [BMD], in g/cm(2)) at two moments, baseline and nine months later...
July 17, 2017: Pediatric Exercise Science
https://www.readbyqxmd.com/read/28713473/home-advantage-in-judo-analysis-by-the-combat-phase-penalties-and-the-type-of-attack
#3
Ciro José Brito, Bianca Miarka, Alfonso López Díaz de Durana, David H Fukuda
Previous studies indicate positive home advantage in judo; however, the factors that influence home advantage have yet to be fully explored. This study investigated the potential differences in technical-tactical variables between home and visiting athletes. A total of 1411 video recorded matches were analyzed (123 home, 1288 away) from 36 international judo competitions contested in 2011-12. The matches were analyzed by the following criteria: combat phases (approach, gripping, attack, defense, groundwork and pause), penalties (by the athlete or the opponent) and the types of attacks (with or without a score)...
June 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28712981/judo-practice-in-early-age-promotes-high-level-of-bone-mass-acquisition-of-growing-boys-skeleton
#4
Kawther Missawi, Mohamed Zouch, Hamada Chaari, Yosra Chakroun, Zouhair Tabka, Elyès Bouajina
The current study aimed to exhibit effects of judo training for at least 2 yr on bone mass parameters in growing boys. Our population was composed of one hundred and thirty boys in tanner stage 1 and aged 10.52 ± 0.86 yr. Eleven judo players were therefore, excluded from the study because they do not have participate regularly to the judo training sessions during the last 2 yr. The resting sample was divided into two groups: 50 judo players (JU group) and 69 controls (C group). Bone mineral density (BMD), bone mineral content (BMC), and bone area (BA) were evaluated by using dual-photon X-ray absorptiometry on weight-bearing sites: the whole body, lumbar spine (L2-L4), legs, femoral necks and hips and on the non-weight bearing sites: arms and radiuses...
July 13, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28664327/effects-of-mindfulness-practice-on-performance-relevant-parameters-and-performance-outcomes-in-sports-a-meta-analytical-review
#5
REVIEW
Lucia Bühlmayer, Daniel Birrer, Philipp Röthlin, Oliver Faude, Lars Donath
BACKGROUND: Mindfulness as a present-oriented form of mental training affects cognitive processes and is increasingly considered meaningful for sport psychological training approaches. However, few intervention studies have examined the effects of mindfulness practice on physiological and psychological performance surrogates or on performance outcomes in sports. OBJECTIVE: The aim of the present meta-analytical review was to examine the effects of mindfulness practice or mindfulness-based interventions on physiological and psychological performance surrogates and on performance outcomes in sports in athletes over 15 years of age...
June 29, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28632049/kinematic-comparison-of-the-seoi-nage-judo-technique-between-elite-and-college-athletes
#6
Takanori Ishii, Michiyoshi Ae, Yuta Suzuki, Yasuto Kobayashi
This study sought to identify biomechanical factors that determine fast and skilful execution of the seoi-nage (shoulder throw) technique by comparing kinematics between elite and college judo athletes. Three-dimensional motion data were captured using a VICON-MX system with 18 cameras operating at 250 Hz as three male elite and seven male college judo athletes performed seoi-nage. No significant difference was found in motion phase time of the turning phase between the two groups, indicating that motion phase time is not necessarily a factor contributing quickness in seoi-nage...
February 24, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28566804/reticulocyte-and-erythrocyte-hypochromia-markers-in-detection-of-iron-deficiency-in-adolescent-female-athletes
#7
J Malczewska-Lenczowska, J Orysiak, B Szczepańska, D Turowski, K Burkhard-Jagodzińska, J Gajewski
The aim of this study was to analyse the effectiveness of new haematology parameters related to reticulocytes and mature red blood cells to differentiate pre latent and latent iron deficiency. The study included 219 female athletes (aged 15-20 years) representing volleyball, handball, cycling, canoeing, cross-country skiing, swimming and judo. To assess iron status the concentration of ferritin, soluble transferrin receptor (sTfR), iron and total iron binding capacity (TIBC) were determined in serum. In addition to blood morphology, the mean cellular haemoglobin content in erythrocytes (CH) and reticulocytes (CHr), mean cellular haemoglobin concentration in reticulocytes (CHCMr), the percentage of erythrocytes (HYPOm) and reticulocytes (HYPOr) with decreased cellular haemoglobin concentration, the percentage of erythrocytes (LowCHm) and reticulocytes (LowCHr) with decreased cellular haemoglobin content, and percentage of erythrocytes with decreased volume (MICROm) were determined...
June 2017: Biology of Sport
https://www.readbyqxmd.com/read/28503526/be-seeded-or-not-be-seeded-a-study-with-olympic-judo-athletes
#8
Leandro Marques Guilheiro, Emerson Franchini
The main purpose of the present study was to calculate the probability-based on a Bayesian approach-to win a medal in the Olympic Games given the athlete is seeded and to verify if the number one ranked athlete has any advantage compared to other seeded athletes concerning his/her chances to be Olympic champion. For this, data from athletes who took part in the London 2012 and Rio 2016 Olympic Games were considered. For males the probability of seeded athletes to win a medal was 41.1% and 42.9%, while for females it was 35...
April 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28469759/factors-determining-success-in-youth-judokas
#9
Goran Kuvačić, Saša Krstulović, Petra Đapić Caput
The aim of this study was to compare two models of determining factors for success in judo. The first model (Model A) included testing motor abilities of high-level Croatian judokas in the cadet age category. The sample in Model A consisted of 71 male and female judokas aged 16 ± 0.6 years who were divided into four subsamples according to sex and weight category. The second model (Model B) consisted of interviewing 40 top-level judo experts on the importance of motor abilities for cadets' success in judo...
February 2017: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28460708/shoulder-pain-in-adolescent-athletes-prevalence-associated-factors-and-its-influence-on-upper-limb-function
#10
Valéria M A de Oliveira, Ana C R Pitangui, Mayra R A Gomes, Hítalo A da Silva, Muana H P Dos Passos, Rodrigo C de Araújo
BACKGROUND: Sports that require the constant use of an upper limb demand the maximum kinetic chain efficiency in this segment. Immaturity of the musculoskeletal system, followed by failure in motor skills can expose adolescents to major reports of pain complaints, particularly for the shoulder. OBJECTIVE: To evaluate the prevalence of shoulder pain in adolescent athletes and identify possible factors associated with the complaint. METHOD: A total of 310 athletes, of both sexes and aged between 10 and 19 years old participated on this study...
March 2017: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/28446454/epidemiology-of-injuries-in-judo-a-cross-sectional-survey-of-severe-injuries-based-on-time-loss-and-reduction-in-sporting-level
#11
Ralph Akoto, Christophe Lambert, Maurice Balke, Bertil Bouillon, Karl-Heinz Frosch, Jürgen Höher
BACKGROUND: Sport injury severity can be detected by duration of time loss and reduction of sporting performance. AIM: To detect injury type-specific time loss duration and sporting performance reduction in judo. METHODS: An online survey of active and former judo athletes was conducted (exclusion criterion: incomplete questionnaire). Only injuries causing more than 3 weeks' time loss were recorded. Athletes classified themselves into performance classes...
April 26, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28391716/epidemiological-survey-of-anterior-cruciate-ligament-injury-in-japanese-junior-high-school-and-high-school-athletes-cross-sectional-study
#12
Saeko Takahashi, Toru Okuwaki
We investigated the incidence of anterior cruciate ligament (ACL) injuries among athletes in junior high school and high school by retrospectively reviewing Japan Sports Council notification data registered over a period of 10 years. The total number of ACL injuries during the 10-year period was 30,458, with an incidence of 0.81 per 1000 athlete-years. Among those with ACL injuries, the ratio of girls to boys was 2.8, and incidence of injury was significantly greater among girls than boys (1.36 as against 0...
April 10, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/28381762/carotid-artery-occlusion-caused-by-the-judo-chokehold-technique-shime-waza
#13
Yuji Kato, Takeshi Hayashi, Norio Tanahashi, Masaki Takao
No abstract text is available yet for this article.
2017: Internal Medicine
https://www.readbyqxmd.com/read/28349036/monitoring-internal-training-load-and-salivary-immune-endocrine-responses-during-an-annual-judo-training-periodization
#14
Marcus F Agostinho, Alexandre Moreira, Ursula F Julio, Gilvan S Marcolino, Barbara M M Antunes, Fabio S Lira, Emerson Franchini
The objective of this study was to examine the internal training load (TL), IgA, and salivary steroid hormone responses in elite youth judo athletes during an entire annual training periodization. Ten male judo athletes (18±2 years, 72.3±12.3 kg, and 175±6 cm) competing at a state/national level were examined for the TL and salivary imune-endocrine responses variations over an annual judo season, divided in three macrocyles composed by distinct periods denominated preparatory period (PP), competitive period (CP) and transition period (TP)...
February 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28282745/overuse-wrist-injuries-in-young-athletes-what-do-sports-physicians-consider-important-signals-and-functional-limitations
#15
Laura S Kox, P Paul F M Kuijer, Jip Opperman, Gino M M J Kerkhoffs, Mario Maas, Monique H W Frings-Dresen
This study's objective was to collect items from experienced sports physicians, relating to the presence and severity of overuse wrist injuries in young athletes, for developing a measurement instrument for signals of overuse wrist injury. Seven Dutch elite sports physicians involved in guidance and treatment of young athletes in wrist-loading sports (gymnastics, tennis, judo, field hockey, volleyball and rowing) participated in a focus group. They discussed signals and limitations related to overuse wrist injuries in young athletes...
February 21, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28276914/biomechanics-of-judo-backward-breakfall-for-different-throwing-techniques-in-novice-judokas
#16
Sentaro Koshida, Takanori Ishii, Tadamitsu Matsuda, Toshihiko Hashimoto
It is generally accepted that proper learning of the breakfall technique during early judo training is essential for attenuating the risk of judo-related head injury. Therefore, it is critical to understand the kinematics and head injury risks of breakfall motion to design a more safe and effective judo teaching paradigm that results in reduction of injury risk. We aimed to investigate the biomechanics of judo backward breakfalls by comparing osoto-gari and ouchi-gari in novice judokas. Twelve male novice judokas (age: 21...
May 2017: European Journal of Sport Science
https://www.readbyqxmd.com/read/28149374/sex-differences-and-the-effects-of-modified-combat-regulations-on-endurance-capacity-in-judo-athletes-a-meta-analytic-approach
#17
Katarzyna Sterkowicz-Przybycień, David H Fukuda
Judo requires endurance capacity to recover from its high-intensity intermittent actions. This systematic review aimed to evaluate VO2max and the anaerobic threshold in competitive male and female judo athletes. Twelve eligible studies were chosen for quantitative meta-analysis, including results for 188 male and 159 female athletes. Combined values were calculated and compared by gender prior to and following altered combat regulations in 2003. No significant differences in VO2max were noted following the rule changes, but female athletes' values increased to a level comparable to those reported in male athletes prior to the alterations...
June 1, 2016: Journal of Human Kinetics
https://www.readbyqxmd.com/read/28125330/effects-of-bilateral-and-non-dominant-practices-on-the-lateral-preference-in-judo-matches
#18
Eliseo Iglesias-Soler, Xian Mayo, Xurxo Dopico, Miguel Fernández-Del-Olmo, Eduardo Carballeira, Juan Fariñas, Sergio Fernández-Uribe
This study analysed the effects of bilateral and non-dominant practice on novice practitioners' lateral preference for judo skills in a combat context (i.e., randori). Thirty sports sciences students (22 men and 8 women; mean age 19 ± 1 years) with right hand, foot, and counterclockwise rotation preferences were divided into 3 groups: bilateral (BG; n = 8), non-dominant (NDG; n = 11), and control (CG; n = 11). Participants received 8 weeks of training at a rate of 3 days per week. The NDG was trained to perform judo skills exclusive with their non-dominant side, while the BG performed every task symmetrically...
January 26, 2017: Journal of Sports Sciences
https://www.readbyqxmd.com/read/28119874/performance-and-energy-systems-contributions-during-upper-body-sprint-interval-exercise
#19
Emerson Franchini, Monica Yuri Takito, Maria Augusta Peduti Dal'Molin Kiss
The main purpose of this study was to investigate the performance and energy systems contribution during four upper-body Wingate tests interspersed by 3-min intervals. Fourteen well-trained male adult Judo athletes voluntarily took part in the present study. These athletes were from state to national level, were in their competitive period, but not engaged in any weight loss procedure. Energy systems contributions were estimated using oxygen uptake and blood lactate measurements. The main results indicated that there was higher glycolytic contribution compared to oxidative (P<0...
December 2016: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/28090146/rapid-weight-loss-in-the-context-of-ramadan-observance-recommendations-for-judokas
#20
REVIEW
A Aloui, H Chtourou, W Briki, M Tabben, A Chaouachi, N Souissi, R J Shephard, K Chamari
Judo is a weight-classified combat sport, and many athletes seek to compete at the lightest possible weight category to gain an advantage from competing against shorter/smaller, and supposedly weaker opponents. To achieve a desired weight, most judokas opt for rapid weight loss techniques. Short-duration maximal efforts are not greatly affected by "making weight", but prolonged and/or repeated exercise is significantly impaired. Negative effects on mood, ratings of perceived exertion, and cognitive function are also reported...
December 2016: Biology of Sport
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