35 results on '"Kons, Rafael"'
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2. Effects of Plyometric Training on Physical Performance: An Umbrella Review
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Kons, Rafael L., Orssatto, Lucas B. R., Ache-Dias, Jonathan, De Pauw, Kevin, Meeusen, Romain, Trajano, Gabriel S., Dal Pupo, Juliano, and Detanico, Daniele
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- 2023
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3. Participation in the International Judo Federation World Tour competitions and performance in Tokyo Olympic Games
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Santos, Danilo F. C., primary, Kons, Rafael L., additional, Lopes-Silva, João P., additional, Agostinho, Marcus F., additional, Detanico, Daniele, additional, Takito, Monica Y., additional, and Franchini, Emerson, additional
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- 2023
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4. Effects Of Photobiomodulation Therapy On Fatigue And Muscle Damage In Judo Athletes: 2368 Board #32 May 31 9:30 AM - 11:00 AM
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Kons, Rafael, da Rosa Orssatto, Lucas Bet, Sakugawa, Raphael Luiz, Junior, Jorge Nelson, Diefenthaeler, Fernando, and Detanico, Daniele
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- 2019
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5. More time for judo matches? Analysis of type of techniques, time, scores, and penalties in the Tokyo 2020 Olympic Games
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Kons, Rafael Lima, primary, Agostinho, Marcus F., additional, Lopes-Silva, João Paulo, additional, Conceição dos Santos, Danilo França, additional, Detanico, Daniele, additional, and Franchini, Emerson, additional
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- 2022
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6. Acute Dehydration Impairs Performance and Physiological Responses in Highly Trained Judo Athletes
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Ceylan, Bayram, primary, Kons, Rafael L., additional, Detanico, Daniele, additional, and Šimenko, Jožef, additional
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- 2022
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7. Denní variace ve výkonnosti ve fitness testu Uchikomi: Vliv rozcvičení
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Kons, Rafael, Eken, Özgür, Yagin, Fatma Hilal, Eken, Ismihan, Gabryś, Tomasz, Knappová, Věra, Bayrakdaroglu, Serdar, Akyildiz, Zeki, Nobari, Hadi, and Bayrakdaroglu, Serdar
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denní variace ,bojové sporty ,bojová umění ,džudo ,martial arts ,combat sports ,diurnal variation ,judo ,specific testing ,General Psychology ,specifické testování - Abstract
Výkon se posuzuje pomocí různých metod, aby byla zajištěna jednotnost mezi soutěžemi. Uchikomi Fitness Test (UFT) mohl být proveden mezi ranní kvalifikací a večerním finále. Účelem této studie je prozkoumat dopad různých zahřívacích protokolů na UFT v různých denních dobách u žen judistek. Této studie se zúčastnilo deset dobrovolnic, které se judu věnují pravidelně více než 5 let a aktivně závodily na mezinárodních turnajích. Judisté absolvovali protokoly UFT, a to buď po bez rozcvičení (NWU), specifickém rozcvičení (SWU) a lineárním + bočním rozcvičení (FWU) dvakrát denně ráno: 09:00-11:00 a večer: 16:00-18:00 ve dnech, které nejdou po sobě. Závěrem lze konstatovat, že došlo k významnému nárůstu skóre UFT (F = 9,89; p = 0,002), a + b (F = 4,42; p = 0,04) a srdeční frekvence (F = 28,99; p < 0,001) v podvečer ve srovnání s ránem. Zvýšení výkonu UFT bylo pozorováno v protokolu SWU ve srovnání s protokoly NWU a FWU (p < 0,05). Interakce mezi denní dobou a protokolem však nebyla významná (p > 0,05). Výkon UFT odhalil denní variace a výkony judistů mohou být příznivě ovlivněny více v pozdních hodinách, zejména po procedurách SWU. Performance is judged using a variety of methods to ensure uniformity between competitions. Uchikomi Fitness Test (UFT) could accomplished between morning qualifying and evening finals. The purpose of this study is to investigate the impact of different warm-up protocols on UFT at different times of the day in female judokas. Ten volunteer women who had been practising judo on a regular basis for more than 5 years and actively competed in international tournaments took part in this study. Judokas completed UFT, either after no-warm-up (NWU), specific warm-up (SWU), and linear+lateral warm-up (FWU) protocols for two times a day in the morning: 09:00-11:00 and in the evening: 16:00-18:00, on non-consecutive days. In conclusion, there was a significant increase in UFT scores (F = 9.89; p = 0.002), a + b (F = 4.42; p = 0.04) and heart rate (F = 28.99; p < 0.001) in the early evening compared to the morning. Increases in UFT performance were observed in the SWU protocol compared to the NWU and FWU protocols (p < 0.05). However, the interaction between time of day and warm protocol was not significant (p > 0.05). The UFT performance revealed diurnal variation, and the judokas' performances may be favourably affected more in the late hours, particularly following SWU procedures.
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- 2022
8. Body Size Measurements and Physical Performance of Youth Female Judo Athletes with Differing Menarcheal Status
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Athayde, Marina Saldanha da Silva, primary, Kons, Rafael Lima, additional, Fukuda, David Hideyoshi, additional, and Detanico, Daniele, additional
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- 2021
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9. Relationships of field-normalized and non-normalized scientometrics with the Physical Education Web-Qualis grades.
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Kons, Rafael Lima, Veber Lopes, Marcus Vinicius, Milan, Fabrício João, Milistetd, Michel, Samara da Silva, Kelly, Detanico, Daniele, and Vieira Nascimento, Juarez
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SERIAL publications ,STATISTICAL models ,PERIODICAL articles ,DATA analysis ,PREDICTION models ,MULTIPLE regression analysis ,PHYSICAL education ,DESCRIPTIVE statistics ,IMPACT factor (Citation analysis) ,BIBLIOMETRICS ,STATISTICS ,COMMUNICATION ,DATA analysis software - Abstract
Copyright of Brazilian Journal of Kineanthropometry & Human Performance is the property of Brazilian Journal of Kineanthropometry & Human Performance and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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10. Physical and technical-tactical performance in judo athletes with visual impairments: analysis from official competitions and validity of a specific protocol
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Kons, Rafael Lima, Universidade Federal de Santa Catarina, and Detanico, Daniele
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Judô ,Esportes para pessoas com deficiência visual ,Educação física ,Atletas ,Paralimpíadas - Abstract
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Desportos, Programa de Pós-Graduação em Educação Física, Florianópolis, 2021. O judô convencional ou para deficientes visuais é uma modalidade esportiva de combate caracterizada como intermitente e de alta intensidade. A única diferença da classe do judô para deficientes visuais em relação aos atletas convencionais é que os atletas são divididos em três grupos (além da categoria de peso) conforme o acometimento da visão, sendo estes: B1 ? cego total, B2 ? percepção de vultos e B3 ? definição de imagens. Apesar dessa classificação existir, atletas das diferentes classes competem entre si, o que pode ocasionar desvantagem nos aspetos técnico-táticos e desempenho competitivo dos atletas com maior acometimento visual durante os combates. Além disso, pouco se sabe sobre a condição física em atletas de judô com deficiência visual, principalmente levando em consideração testes específicos, uma vez que alguns estímulos, como o tátil e o auditivo são compensados em função da falta total ou parcial do sentido da visão. A partir disso, esta tese foi dividida em três estudos cujo os objetivos foram: Estudo 1: (a) analisar o desempenho técnico-tático de atletas de judô com deficiência visual de alto nível de acordo com as diferentes classes esportivas a partir dos resultados dos Jogos Paralímpicos de Londres 2012 e Rio 2016; Estudo 2: (b) investigar a variação técnica e a performance competitiva nos Jogos Paralímpicos Rio 2016 de acordo com as classes esportivas e Estudo 3: (c) validar e adaptar o Special Judo Fitness Test (SJFT) para atletas de judô portadores de deficiência visual a partir de estímulos tátil e sonoro. Para os dois primeiros objetivos foram utilizados os livros de resultados dos Jogos Paralímpicos Londres 2012 e Rio 2016, os quais contêm resultados descritivos detalhados sobre o desempenho técnico-tático de cada atleta, juntamente com a classe esportiva individual. Para a validação e adaptação do SJFT, foram avaliados 20 atletas e 26 treinadores, das diferentes classes esportivas a partir de dois protocolos experimentais: estimulo tátil e sonoro, além de uma situação controle (sem estímulo). As análises estatísticas utilizadas nos estudos foram: Anova a um fator para verificar diferença das variáveis entre as classes, Qui-Quadrado para verificar associação entre as variáveis técnico-táticas, correlação de Pearson para verificar a relação entre o desempenho técnico-tático e a performance, índice de correlação intraclasse para verificar a reprodutibilidade dos diferentes protocolos do SJFT e regressão logística binomial para verificar a razão de chance de obter sucesso nas competições, de acordo com cada classe. Todos os testes consideraram um p-valor definido em 0,05. A partir do estudo 1 e 2, os resultados demonstraram que atletas com maior acometimento visual (B1) possuem menor desempenho nos aspectos de desempenho técnico-tático (e.g. scores, índice de eficiência) menores números de medalhas, e menor tempo para perder, comparado aos atletas com menor acometimento visual (B2 e B3). Adicionalmente a razão de chance um atleta B1 obter medalhas variou de 3,0 a 7,2 menores comparados aos atletas B2 e B3. O desempenho da variação técnica também foi inferior para os atletas B1, principalmente nas variáveis de razão de vitória, variabilidade técnica e projeções por luta (p
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- 2021
11. Effect of vision impairment on match-related performance and technical variation in attacking moves in Paralympic judo
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Kons, Rafael, Krabben, Kai, Mann, David L., Detanico, Daniele, Kons, Rafael, Krabben, Kai, Mann, David L., and Detanico, Daniele
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In Paralympic judo for athletes with vision impairment (VI judo) all eligible athletes (i.e. B1, B2 and B3 classes) compete against each other in the same competition. Evidence suggests that athletes with more impairment may be disadvantaged, but that more sensitive measures of performance are necessary to understand the impact of impairment on performance. The aim of this study was to investigate the relationship between Para sport class and technical variation, time-motion variables, and performance in Paralympic judo. All 175 judo matches from the Rio 2016 Paralympic Games were analysed across 129 competitors (82 male and 47 female). The main results indicated that athletes who demonstrated less technical variation also experienced less competitive success, with the functionally blind athletes (class B1) demonstrating less technical variation than partially sighted (class B2 and B3) athletes (p < 0.05). There was no difference in the time-motion variables between sport classes (p > 0.05). We conclude that measures of technical variation are sensitive to differences in impairment and are suitable for studies that investigate the impairment-performance relationship in VI judo. Results further confirm that some athletes with impairment are disadvantaged under the current rules of VI judo.
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- 2021
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12. Effects of stretch-shortening cycle fatigue protocol on lower limb asymmetry and muscle soreness in judo athletes
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Kons, Rafael Lima, Orssatto, Lucas Bet da Rosa, Sakugawa, Raphael Luiz, da Silva Junior, Jorge Nelson, Diefenthaeler, Fernando, Detanico, Daniele, Kons, Rafael Lima, Orssatto, Lucas Bet da Rosa, Sakugawa, Raphael Luiz, da Silva Junior, Jorge Nelson, Diefenthaeler, Fernando, and Detanico, Daniele
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This study aimed to analyse unilateral countermovement jumps (CMJ) performance and muscle soreness in lower limbs, as well as to compare lower limb asymmetry over 48h after a stretch-shortening cycle (SSC) fatigue protocol. Fourteen judo athletes performed unilateral CMJ on each leg before, and after the 5th and 10th sets over 24h and 48h of an SSC-fatigue protocol. The SSC protocol reduced CMJ performance after the 5th set and 10th sets, especially in the weaker limb (p < 0.05), but returned to the baseline values after 24h. Asymmetry increased for peak force, peak power, and mean power after the 5th set compared to the baseline (p < 0.05) and remained higher for peak force after the 10th set (p = 0.019), returning to the baseline values after 24h (p < 0.05). Soreness increased for the lower body at post, 24h, and 48h compared to the baseline (p < 0.05). In conclusion, a fatiguing SSC protocol can result in increased bilateral asymmetries in judo athletes, but after 24h and 48h of the protocol the bilateral asymmetry returned to the baseline values, with only muscle soreness still elevated.
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- 2020
13. Acute performance responses during repeated matches in combat sports: A systematic review
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Kons, Rafael L., Orssatto, Lucas B.R., Detanico, Daniele, Kons, Rafael L., Orssatto, Lucas B.R., and Detanico, Daniele
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Objective: Investigate the acute effects of repeated combat sports matches on vertical jump and handgrip strength performance in grappling and striking modalities. Design: Systematic review. Methods: PubMed, Scopus, and Web of Science databases were searched. The following eligibility criteria for selecting studies were adopted: Population: Combat sports athletes; Intervention: Official or simulated matches; Comparator: Baseline versus after-matches performance; Outcome: Vertical jump and/or handgrip strength performance. PROSPERO: CRD42019129264 Results: The systematic search resulted in 13 studies, including Brazilian jiu-jitsu, Greco-Roman, judo, taekwondo, and wrestling (freestyle and Greco-Roman) modalities, and a diverse number of repeated matches (i.e. 1–5). None of the studies adopted a randomized and controlled design and, consequently, none of them was classified as high quality. Brazilian jiu-jitsu and freestyle wrestling athletes presented an earlier onset of fatigue in upper and lower limbs, while judo and Greco Roman wrestling presented a later onset, from the third match. In taekwondo athletes, no fatigue was observed in the lower limbs, while handgrip strength decreased. However, studies have reported unclear data regarding the time-course of lower and upper limbs’ fatigue following repeated matches in taekwondo. Conclusion: Both upper and lower limbs performance were affected after repeated matches in grappling combat sports when assessed by handgrip strength and vertical jump performance. In taekwondo, the studies have shown unclear results concerning the effects of repeated matches on upper and lower limb performance. There is a lack of studies classified as high-quality and investigations into the neuromuscular mechanisms underpinning fatigue after the repeated matches.
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- 2020
14. Prevalência de lesões em atletas de Brazilian jiu-jitsu: comparação entre diferentes níveis competitivos
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Silva Júnior, Jorge Nelson da, Kons, Rafael Lima, Dellagrana, Rodolfo André, and Detanico, Daniele
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lcsh:Sports ,lcsh:GV557-1198.995 ,lcsh:R5-920 ,Epidemiology ,Lesões em atletas ,Esportes ,Athletic injuries ,Epidemiologia ,lcsh:Medicine (General) ,Sports - Abstract
This study aimed to identify types and sites of body injury, location of injury occurrence, and the mechanism and severity of injuries in novice and advanced Brazilian jiu-jitsu (BJJ) athletes. One hundred and eight BJJ athletes took part in this study separated in two groups: advanced (n = 53) and novice (n = 55). Athletes answered a questionnaire concerning regions of injury, locality of occurrence, injury severity and mechanism. Chi square test and a logistic regression analysis were used with the level of significance set at p < 0.05. The main results showed that shoulders and knees were the most injury location reported by novice and advanced athletes. Novice athletes demonstrated higher prevalence of injuries during training sessions (54.5%), whereas advanced athletes reported more injuries during competitions (66.1%). Significant associations between novice and advanced athletes were observed for major joints (p < 0.05). The odds ratio of having injury was 70-87% less for novice versus advanced athletes for the major joints cited. We concluded that BJJ athletes demonstrate high prevalence of injury mainly at knee and shoulder. While risk of injury appeared less in novice, the advanced demonstrated higher number of injuries during competitions as a consequence of injured joint keys. By contrast, novice athletes reported higher number of injuries associated with training sessions as a consequence of overuse. Resumo O objetivo deste estudo foi verificar as regiões do corpo afetadas por lesões, o local de maior ocorrência de lesão, o mecanismo e a gravidade das lesões em atletas iniciantes e avançados de Brazilian jiu-jitsu (BJJ). Cento e oito atletas participaram deste estudo, separados em dois grupos: avançados (n = 53) e iniciantes (n = 55). Os atletas responderam um questionário sobre as regiões acometidas por lesões, local de ocorrência, grau de gravidade e mecanismos. O teste do Qui-Quadrado e análise de regressão logística foram utilizados com o nível de significância de p < 0,05. Os principais resultados mostraram que o ombro e o joelho foram os locais de lesão mais citados pelos atletas iniciantes e avançados; os atletas iniciantes apresentaram maior prevalência de lesões durante a sessão de treino (54,5%), enquanto os atletas avançados apresentaram mais lesões durante as competições (66,1%). Foram observadas associações significativas entre atletas iniciantes e avançados para as principais articulações (p < 0,05). A chance de ter lesão foi de 70-87% menor para iniciantes do que avançados nas principais articulações citadas. Concluímos que os atletas do BJJ apresentaram alta prevalência de lesões principalmente no joelho e no ombro. A razão de chance de ter lesão foi menor para atletas iniciantes do que avançados. Atletas avançados apresentaram maior número de lesões durante as competições e o mecanismo principal foram chaves articulares. Os atletas iniciantes apresentaram maior número de lesões durante as sessões de treino e o mecanismo principal foi o uso excessivo.
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- 2018
15. Are vertical jump height and power output correlated to physical performance in different sports? An allometric approach
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Pupo, Juliano, primary, Ache-Dias, Jonathan, additional, Kons, Rafael Lima, additional, and Detanico, Daniele, additional
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- 2021
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16. PREDICTORS OF JUDO-SPECIFIC TASKS FROM NEUROMUSCULAR PERFORMANCE IN YOUNG ATHLETES AGED 11–16 YEARS
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Kons, Rafael Lima, primary, da Silva Athayde, Marina Saldanha, additional, da Silva Junior, Jorge Nelson, additional, Katcipis, Luiz Felipe Guarise, additional, and Detanico, Daniele, additional
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- 2020
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17. The ratio standard is not adequate for scaling handgrip strength in judo athletes and nonathletes
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Külkamp, Wladymir, primary, Ache-Dias, Jonathan, additional, Kons, Rafael Lima, additional, Detanico, Daniele, additional, and Pupo, Juliano Dal, additional
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- 2020
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18. Photobiomodulation therapy does not attenuate fatigue and muscle damage in judo athletes: A randomized, triple-blind, placebo-controlled trial
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Da Rosa Orssatto, Lucas Bet, Detanico, Daniele, Kons, Rafael Lima, Sakugawa, Raphael Luiz, Da Silva, Jorge Nelson, Diefenthaeler, Fernando, Da Rosa Orssatto, Lucas Bet, Detanico, Daniele, Kons, Rafael Lima, Sakugawa, Raphael Luiz, Da Silva, Jorge Nelson, and Diefenthaeler, Fernando
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Fatigue and muscle damage negatively affect performance in lower limb exercises involving the stretch-shortening cycle in judo athletes during competition and training sessions. Photobiomodulation therapy has emerged as an effective non-invasive strategy to attenuate fatigue and muscle damage when applied before different types of exercises. Our objective was to investigate the effects of photobiomodulation therapy on fatigue and muscle damage in judo athletes. Sixteen judo athletes participated in the study (23.1 ± 3.8 years, 77.9 ± 14.9 kg, 173.1 ± 8.9 cm, 17.5 ± 7.3 body fat%, 12.9 ± 5.0 years of practice). Each participant received, in a randomized manner, photobiomodulation in one limb and placebo in the contralateral limb on the same day. Thereafter, subjects performed a stretch-shortening cycle protocol to induce muscle fatigue and damage. Countermovement jump (impulse, peak power, peak velocity, and peak force), echo intensity (rectus femoris and vastus lateralis), and muscle soreness were assessed at different time points before, during, immediately post, and 24 and 48 h after the protocol. Muscle fatigue was detected due to reductions in countermovement jump impulse (14.7 ± 9.8 and 15.9 ± 15.5%), peak power (12.9 ± 8.5 and 11.9 ± 6.9%), peak velocity (8.6 ± 8.1 and 6.5 ± 6.0%), and peak force (7.0 ± 5.3 and 8.0 ± 6.1%) after the protocol (p < 0.001), for placebo and photobiomodulation therapy, respectively. Muscle damage was detected due to reductions in countermovement jump impulse (-6.1 ± 19.2% and-4.5 ± 9.2%, p < 0.05), increases in echo intensity (rectus femoris, 21.0 ± 11.9 and 20.8 ± 9.0%; and vastus lateralis, 22.4 ± 23.2%; and 16.7 ± 23.8%; p < 0.001), and quadriceps muscle soreness (3.6 ± 1.6 and 3.5 ± 1.7 a.u; p < 0.011), 48 h after the protocol, for placebo and photobiomodulation therapy, respectively. No differences were observed between photobiomodulation therapy and placebo at any time points for any variables (p > 0.05), indicating no pos
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- 2019
19. Relação entre o desempenho técnico-tático e testes genéricos e específicos em atletas de judô
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Kons, Rafael Lima, Universidade Federal de Santa Catarina, and Detanico, Daniele
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Judô ,Educação física - Abstract
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Desportos, Programa de Pós-Graduação em Educação Física, Florianópolis, 2018. O judô é uma modalidade esportiva de combate olímpica caracterizada como intermitente e de alta intensidade. Resultados positivos em competições estão atrelados a componentes técnico-táticos e elevado nível físico durante as lutas, uma vez que o atleta precisa sustentar alta intensidade buscando manter a eficiência técnica em diversas lutas em sequência. Testes físicos genéricos e específicos têm sido utilizados como monitoramento das cargas de treino ao longo da preparação física, porém não se sabe ao certo se um bom desempenho nestes testes esta atrelado a um bom desempenho em competição. Assim, o objetivo deste estudo é investigar a relação do desempenho técnico-tático com testes específicos e genéricos em atletas de judô de ambos os sexos. Participaram deste estudo 22 atletas de judô do sexo masculino com tempo de prática 10,1 ± 3,0 anos e 19 atletas do sexo feminino com tempo de prática de 11,0 ± 4,5 anos. Os atletas foram submetidos a dois momentos de avaliações. O primeiro consistia nas avaliações dos testes genéricos e específicos, nessa ordem: countermovement jump (CMJ), teste de força de preensão manual, Judogi Grip Strenght Test (JGST) realizado de modo dinâmico e isométrico e o Special Judo Fitness Test (SJFT). Após duas semanas foram filmadas as lutas dos mesmos atletas em competição e analisados os parâmetros técnico-táticos. Foi utilizada correlação de Spearman (dados não normais) e Pearson (dados normais) para verificar a relação entre as variáveis dos testes e o desempenho técnico-tático em competição e para verificar quais variáveis dos testes podem explicar o desempenho técnico-tático foi realizada uma regressão linear múltipla, ambos considerando p < 0,05. Os principais resultados do sexo masculino a partir dos testes específicos foram correlação positiva da efetividade com a segunda série do SJFT (r = 0,44; p = 0,038) e com o JGST isométrico (r = 0,43; p = 0,043), e negativa entre o número de ataques por luta e o JGST isométrico (r = -0,45; p = 0,033). Com relação aos os testes genéricos, foi encontrada correlação positiva entre o tempo efetivo e os parâmetros cinéticos do salto vertical: a altura do salto (r = 0,54; p = 0,009) potência pico, (r = 0,52; p = 0,013), potência média (r = 0,58, p = 0,004), pico de velocidade (r = 0,58, p = 0,004) e força máxima (r = 0,56; p = 0,006). Para o grupo feminino não foram encontradas correlações entre o desempenho técnico-tático e testes específicos, no entanto, foram encontradas correlações positivas entre o tempo efetivo e os parâmetros cinéticos do salto vertical: altura do salto (r = 0,69; p = 0,001), potência pico (r = 0,65; p = 0,002), potência média (r = 0,76, p =
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- 2018
20. Photobiomodulation Therapy Does Not Attenuate Fatigue and Muscle Damage in Judo Athletes: A Randomized, Triple-Blind, Placebo-Controlled Trial
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Orssatto, Lucas Bet da Rosa, primary, Detanico, Daniele, additional, Kons, Rafael Lima, additional, Sakugawa, Raphael Luiz, additional, Silva, Jorge Nelson da, additional, and Diefenthaeler, Fernando, additional
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- 2019
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21. Neuromuscular and postural control in visually and nonvisually impaired judo athletes: case study
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Kons, Rafael Lima, primary, Sakugawa, Raphael Luiz, additional, Rossato, Mateus, additional, Diefenthaeler, Fernando, additional, and Detanico, Daniele, additional
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- 2019
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22. Influência da gordura corporal no desempenho do salto com contramovimento em judocas de diferentes categorias de peso
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Athayde, Marina Saldanha da Silva, Detanico, Daniele, and Kons, Rafael Lima
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Salto com contra movimento ,Combat sports ,Muscle power ,Ciclo alongamento-encurtamento ,Esportes de combate ,Composição corporal ,Stretch-shortening cycle ,Potência muscular ,Countermovement jump ,Body composition - Abstract
Este estudo teve como objetivo verificar a influência da gordura corporal nos parâmetros cinéticos do salto vertical em judocas de diferentes categorias. Participaram deste estudo 48 judocas do sexo masculino agrupados por categorias: 55-60 kg/60-66 kg (ligeiro/meio-leve), 66-73 kg/73-81 kg (leve/meio-médio) e 81-90 kg/90-100 kg (médio/meio-pesado). Os judocas realizaram saltos verticais countermovement jump (CMJ) sobre uma plataforma de força, sendo analisadas as variáveis de desempenho (altura do salto e potência), força máxima e pico de velocidade. Para análise dos dados foi utilizada análise de variância (ANOVA) e análise de covariância (ANCOVA) com o percentual de gordura como covariável. Para todos os testes foi utilizado p < 0,05. Os principais resultados mostraram que os atletas de categorias mais pesadas (81-90 kg/90-100 kg) apresentaram maior percentual de gordura (p < 0,05) e somatório de dobras (p < 0,05) quando comparado às demais categorias (55-60 kg/60-66 kg e 66-73 kg/73-81 kg). Foi encontrado menor desempenho nos judocas mais pesados em quase todas as variáveis do CMJ quando comparados com judocas de categorias mais leves, com destaque para altura do salto (55-60 kg/60-66 kg = 46,78 ± 6,05 cm; 66-73 kg/73-81 kg = 47,42 ± 4,39 cm; 81-90 kg/90-100 kg = 42,11 ± 4,11; p < 0,05). Porém, quando retirada a influência do percentual de gordura as diferenças desapareceram para a maioria das variáveis (p > 0,05). Pode-se concluir que judocas de categorias mais leves apresentaram valores superiores na maioria das variáveis do CMJ (altura do salto, potência e velocidade) quando comparados com atletas de categorias mais pesadas. Esses resultados parecem ser influenciados pelo menor percentual de gordura dos judocas mais leves. This study aimed to verify the influence of body fat on kinetic parameters of vertical jump in judo athletes from different weight categories. The study included 48 male judokas grouped by categories: 55-60 kg/60- 66 kg (light/half-light), 66-73 kg/73-81 kg (light/half-middle) and 81-90 kg/90-100 kg (middle/half-heavy weight). Judokas performed vertical jumps such as the countermovement jump (CMJ) on a force platform, and the following performance variables were analyzed: jump height and power, maximum power and peak velocity. Analysis of variance (ANOVA) and analysis of covariance (ANCOVA) – body fat as covariate – were used with the level of significance set at p < 0.05. The main results showed that athletes in heavier categories (81-90 kg/90-100 kg) showed higher body fat (p < 0.05) and sum of skinfold thickness (p < 0.05) when compared to lighter categories (55-60 kg/60-66 kg and 66-73 kg/73-81 kg). Lower performance was found in almost all CMJ variables when compared to judokas from lighter categories, with highlight for jump height (55-60 kg/60-66 kg = 46.78 ± 6.05 cm; 66-73 kg/73-81 kg = 47.42 ± 4.39 cm; 81-90 kg/90-100 kg = 42.11 ± 4.11; p < 0.05). However, when the effect of body fat was removed, the differences disappeared (p > 0.05). We concluded that the judokas from lighter categories showed higher values in the most of CMJ variables (jump height, power and velocity) when compared with judokas from heavier categories. This seems to be influenced by lower body fat in lighter judo athletes.
- Published
- 2017
23. ARE VERTICAL JUMP HEIGHT AND POWER OUTPUT CORRELATED TO PHYSICAL PERFORMANCE IN DIFFERENT SPORTS? AN ALLOMETRIC APPROACH.
- Author
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DAL PUPO, JULIANO, ACHE-DIAS, JONATHAN, LIMA KONS, RAFAEL, and DETANICO, DANIELE
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VERTICAL jump ,SPORTS ,ALLOMETRY ,BODY mass index ,SPRINTING - Abstract
Purpose. This study aimed to analyse the relationship between vertical jump parameters - jump height (JH), peak power output (PPO), and mean power output (MPO) - and specific physical performance in different sports using the allometric approach. In this sense, it was verified whether scaled power output for body mass might have a stronger correlation with physical performance than raw power output. Methods. The study involved 52 male athletes (21 judokas, 18 futsal players, and 13 sprint runners). They performed the following tests: vertical jumps (countermovement and squat), specific physical tests for judo (Special Judo Fitness Test), repeated sprint ability for futsal players, and sprint running (20 m and 200 m) for runners. A specific allometric exponent for PPO and MPO was established. Pearson's correlation was used to determine the relationship between physical tests and vertical jump parameters for absolute and allometric scales. Results. Moderate to very large correlations were found between physical performance and JH (r: 0.47-0.87), PPO (r: 0.47-0.75), and MPO (r: 0.49-0.81). Considering power output scaled for body mass, the correlation between jump parameters and physical performance was greater than absolute values, in which the r values ranged 0.46-0.81 for PPO and 0.52-0.84 for MPO. Conclusions. JH and power output seem to correlate in a similar magnitude with physical performance tests for most variables and sports analysed. From a practical point of view, coaches and physical trainers are encouraged to use JH to monitor training, considering the cost of equipment and practicality. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
24. Impact of different judo rules: analysis of scores and penalties in Paris Grand Slam Championships.
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Katcipis, Luiz Felipe Guarise, Júnior, Jorge Nelson Silva, Kons, Rafael L., Detanico, Daniele, Katcipis, Luiz Felipe Guarise, Júnior, Jorge Nelson Silva, Kons, Rafael L., and Detanico, Daniele
- Abstract
In the last two decades, the International Judo Federation (IJF) has been implementing a series of changes in its official rules, in order to improve efficiency and achieve more dynamism in judo combat. The aim of the present investigation was to analyze the effects of judo rule changes proposed by IJF in three periods (2011, 2016 and 2017), considering the scores and penalties in the Grand Slam Paris (GSP). The values of the scores (yuko, wazari and ippon) and the penalties (shido) were relativized by the total number of matches. The normality of data was assessed by the Kolmogorov-Smirnov test. Two-way analysis of variance and Bonferroni post hoc test (or t-test when necessary) were used to compare the scores, penalties and the efficiency index among GSP2011, GSP2016 and GSP2017. The significance level was set at p< 0.05.The results indicated that GSP2016 presented higher incidence of penalties in the general male teams and lower number of yuko score compared to the GSP2011 and GSP2017, while the GSP2011 showed higher efficiency in the female teams (general and medalists). Ippon was the score that determined the outcome of the matches in GSP2011 and GSP2017 particularly for male medalist teams. We conclude that the rule changes in the GSP2016 deviated from the IJF objectives compared to GSP2011 and GSP2017, considering the greater importance of scores than punishments, En las últimas dos décadas, la Federación Internacional de Judo (IJF) ha estado implementando una serie de cambios en sus reglas oficiales, con el fin de mejorar la eficiencia y lograr más dinamismo en el combate de judo. El objetivo de la presente investigación fue analizar los efectos de los cambios en las normas de judo propuestas por IJF en tres períodos (2011, 2016 y 2017) teniendo en cuenta las puntuaciones y penalizaciones en el Grand Slam de París (GSP). Los valores de las puntuaciones (yuko, wazari e ippon) y las penalizaciones (shido) se relativizaron por el número total de combates. La normalidad de los datos se evaluó mediante la prueba de Kolmogorov-Smirnov. El análisis de varianza de dos vías y la prueba post hoc de Bonferroni (o prueba t-test cuando fue necesario) se usaron para comparar las puntuaciones, las penalizaciones y el índice de eficiencia entre GSP2011, GSP2016 y GSP2017. El nivel de significancia se estableció en p< 0,05. Los resultados indicaron que GSP2016 presentó una mayor incidencia de penalizaciones en los equipos masculinos generales y un menor número de puntajes de yuko en comparación con el GSP2011 y GSP2017. Mientras que el GSP2011 mostró una mayor eficiencia en los equipos femeninos (general y medallistas). Ippon fue la puntuación que determinó el resultado de los combates en GSP2011 y GSP2017, especialmente para los equipos de medallistas masculinos. Concluimos que los cambios en la norma en el GSP2016 se desviaron de los objetivos de IJF en comparación con GSP2011 y GSP2017, considerando la mayor importancia de las puntuaciones que las penalizaciones.
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- 2018
25. Neuromuscular and judo-specific tests: Can they predict judo athletes' ranking performance?
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KONS, RAFAEL LIMA, FRANCHINI, EMERSON, and DETANICO, DANIELE
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JUDO ,ANAEROBIC capacity ,VERTICAL jump ,GRIP strength ,LEG - Abstract
Copyright of Ido Movement for Culture. Journal of Martial Arts Anthropology is the property of Idokan Poland Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2020
- Full Text
- View/download PDF
26. Impact of different judo rules: analysis of scores and penalties in Paris Grand Slam Championships. [Impacto de las diferentes reglas de judo: análisis de puntuaciones y penalizaciones en los Campeonatos de Grand Slam de París].
- Author
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Katicips, Luiz Felipe Guarise, primary, Júnior, Jorge Nelson Silva, additional, Kons, Rafael Lima, additional, and Detanico, Daniele, additional
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- 2018
- Full Text
- View/download PDF
27. Influência da gordura corporal no desempenho do salto com contramovimento em judocas de diferentes categorias de peso
- Author
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Athayde, Marina Saldanha da Silva, primary, Detanico, Daniele, additional, and Kons, Rafael Lima, additional
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- 2018
- Full Text
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28. Effect of official judo matches on handgrip strength and perceptual responses
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Kons, Rafael Lima, primary, Dal Pupo, Juliano, additional, Ache-Dias, Jonathan, additional, Garcia, Thyago, additional, Rodrigues da Silva, Romário, additional, Katicips, Luiz Felipe Guarise, additional, and Detanico, Daniele, additional
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- 2018
- Full Text
- View/download PDF
29. Methods and magnitudes of rapid weight loss in judo athletes over pre-competition periods
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Kons, Rafael Lima, primary, Athayde, Marina Saldanha Da Silva, additional, Follmer, Bruno, additional, and Detanico, Daniele, additional
- Published
- 2018
- Full Text
- View/download PDF
30. Olympic and Paralympic Games Rio 2016
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Lima Kons, Rafael, primary, Da Silva Júnior, Jorge Nelson, additional, Fischer, Gabriela, additional, and Detanico, Daniele, additional
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- 2018
- Full Text
- View/download PDF
31. Neuromuscular features in sprinters with cerebral palsy: case studies based on paralympic classification
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Antunes, Diego, primary, Rossato, Mateus, additional, Kons, Rafael Lima, additional, Sakugawa, Raphael Luiz, additional, and Fischer, Gabriela, additional
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- 2017
- Full Text
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32. OLYMPIC AND PARALYMPIC GAMES RIO 2016: A TECHNICAL-TACTICAL ANALYSIS OF JUDO MATCHES.
- Author
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Kons, Rafael Lima, Da Silva Júnior, Jorge Nelson, Fischer, Gabriela, and Detanico, Daniele
- Subjects
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JUDO tournaments , *OLYMPIC Games , *SPORTS penalties , *ATHLETES ,PARALYMPICS - Abstract
The purpose of this study was to compare athletes' scores, penalties and efficiency between the Olympic and Paralympic Games Rio 2016, and identify which variable determined the winner of the matches. A total of 608 matches in the Olympic and Paralympic Games were analysed. Total relative scores (ippon, waza ari and yuko), penalties (shido per match) and efficiency were identified in the following categories: male and female, Olympic and Paralympic Games, and medallists and non-medallists. The main results showed that waza ari was higher in the Olympic Games (p=.05) than in the Paralympic Games (male team); ippon was higher in the Paralympic Games (p=.05) and shido was higher in the Olympic Games (p=.05) (female team). The male Olympic medallists were more efficient (p=.01), while the female Paralympic medallists were less penalised (p=.01). Ippon was the key variable that determined winning in both the Olympic and Paralympic matches (p<.001). We concluded that the male Olympic judo athletes showed greater efficiency and scores than Paralympians, while the female team presented more scores and fewer penalties. Ippon was the key point that determined victory in most of the matches. [ABSTRACT FROM AUTHOR]
- Published
- 2018
- Full Text
- View/download PDF
33. Injury prevalence in Brazilian jiu-jitsu athletes: comparison between different competitive levels.
- Author
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da Silva Junior, Jorge Nelson, Lima Kons, Rafael, Dellagrana, Rodolfo André, and Detanico, Daniele
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PSYCHOLOGY of athletes ,CHI-squared test ,EPIDEMIOLOGY ,KNEE injuries ,MARTIAL arts injuries ,QUESTIONNAIRES ,SHOULDER injuries ,WOUNDS & injuries ,LOGISTIC regression analysis ,SPORTS events ,PHYSICAL training & conditioning ,DISEASE prevalence ,SEVERITY of illness index ,ODDS ratio ,INJURY risk factors - Abstract
Copyright of Brazilian Journal of Kineanthropometry & Human Performance is the property of Brazilian Journal of Kineanthropometry & Human Performance and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2018
- Full Text
- View/download PDF
34. Vertical jump performance in judo and Brazilian jiu-jitsu athletes: an approach with different training levels.
- Author
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KONS, RAFAEL LIMA, DA SILVA ATHAYDE, MARINA SALDANHA, DA SILVA JUNIOR, JORGE NELSON, DA SILVA TAVARES, WILKER, and DETANICO, DANIELE
- Subjects
VERTICAL jump ,JUDO ,MARTIAL arts training - Abstract
Copyright of Ido Movement for Culture. Journal of Martial Arts Anthropology is the property of Idokan Poland Association and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2017
- Full Text
- View/download PDF
35. Methods and Magnitudes of Rapid Weight Loss in Judo Athletes Over Pre-Competition Periods.
- Author
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Kons, Rafael Lima, Da Silva Athayde, Marina Saldanha, Follmer, Bruno, and Detanico, Daniele
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JUDO tournaments ,JUDO coaching ,ANTHROPOMETRY ,PHYSIOLOGICAL aspects of body weight ,WEIGHT loss ,PHYSIOLOGY - Abstract
Purpose. The study aimed to analyse the methods and magnitudes of rapid weight loss (RWL) in judo team members in distinct periods before the biggest state competition in Southern Brazil. Methods. Twelve male judo athletes took part in the study. The data collection was performed in three periods: (1) three months before the biggest state competition, (2) one week before the competition, (3) the day prior to the event. Anthropometric assessment and the Rapid Weight Loss Questionnaire were performed. Student's t-test and ANOVA were applied, with the significance level set at p < 0.05. Results. The main results showed that the majority of athletes reduced 7.1 ± 6.8 kg and started to lose weight to compete 13-16 years earlier. Increasing exercises (91.7%) and restricting fluid intake (41.7%) were the most frequent methods of weight loss. The judo coach/sensei was the person who most influenced the RWL procedure (58.3%). The athletes reduced 5% of their body weight (p < 0.01), 2.4% of their body fat ( p < 0.01), and 2% of their fat-free mass ( p = 0.04). Conclusions. We conclude that RWL was a common and premature practice in the athletes in the study. The most common methods were increasing exercise volume and restricting fluid and food intake. The coach/sensei was the most influential person in this practice. The judo athletes presented decreases in body fat and fat-free mass during the period prior to the competition. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
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