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http://grupodestudoslutas.blogspot.com

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Quem sou eu

São Paulo, São Paulo, Brazil
Professor da EEFE-USP; Praticante e Pesquisador de Judô; Preparador físico de atletas de modalidades esportivas de combate.

Arquivo do blog

quinta-feira, 28 de junho de 2012

Relative age effect no TKD

Estava falando disso na semana passada...
Perceptual and Motor Skills: Volume 114, Issue , pp. 461-468.

doi: 10.2466/05.25.PMS.114.2.461-468

RELATIVE AGE EFFECT IN OLYMPIC TAEKWONDO ATHLETES1
MAICON R. ALBUQUERQUE
Instituto Superior de Educação Anísio Teixeira Fundação Helena Antipoff and Faculdade de Ciências Humanas, Sociais e da Saúde Universidade FUMEC
GUILHERME MENEZES LAGE
Faculdade de Ciências Humanas Sociais e da Saúde–Universidade FUMEC
VARLEY TEOLDO da COSTA
Centro Universitário de Belo Horizonte–UNI-BH
RENATO MELO FERREIRA, EDUARDO MACEDO PENNA, LUIZ CARLOS COUTO de ALBUQUERQUE MORAES, LEANDRO FERNANDES MALLOY-DINIZ
Universidade Federal de Minas Gerais
Summary
Relative age effects refer to the effects of age differences among individuals who have been grouped together for a performance activity. This study aimed to investigate the relative age effect on Olympic Taekwondo athletes, in several Olympic Games, and in both sexes. The study sample consisted of 291 athletes who had competed in Atlanta, Sydney, and Beijing Olympic Games. The relative age effect was examined for the general distribution of athletes by quartile, for each of the individuals, and for male and female athletes. There were no discernable effects of relative age on Olympic Taekwondo athletes.

quinta-feira, 21 de junho de 2012

Treinamento no ECP nesta terça

Serrão, Tiago Camilo, eu, Guilheiro e Bruno. Bruno (73kg), Guilheiro (81kg) e Tiago (90kg) em preparação para Londres.


segunda-feira, 18 de junho de 2012

Judô I: material sobre treinamento

Devido a vírus em meu notebook, o arquivo da aula ministrada foi perdido. O link abaixo direciona para o mesmo conteúdo, porém em inglês (que os ingleses não leiam, porque deve ter vários erros...)

https://docs.google.com/open?id=0B6F18t_8Glc7cUNrVFhrM3JGdTg

Lembrem-se de ler o material recomendado.

sexta-feira, 15 de junho de 2012

Tratamento de lesão auricular em atletas de luta olímpica


Clin J Sport Med. 2012 Jun 12. [Epub ahead of print]

Acute Management of Auricular Hematoma: A Novel Approach and Retrospective Review.

Source

Department of Emergency Medicine, University of Toledo College of Medicine, Toledo, Ohio.

Abstract

ABSTRACT:: This retrospective case series is used to describe a refined technique for the aspiration and drainage of auricular hematoma that is simple, cost-effective, and allows for rapid recovery. Patients, all high school males participating in competitive wrestling, were enrolled voluntarily after risks and benefits were discussed, and consent was obtained. Criteria for enrollment included acute auricular hematoma of at least 2 cm in size with occurrence no greater than 3 weeks before presentation, and no overt signs of infection. Patients underwent alcohol cleansing followed by injection of 1% lidocaine, and hematoma aspiration with an 18-gauge catheter. The cannula was left within the hematoma cavity, and a compression dressing was applied. This method is an acceptable alternative to current methods of managing auricular hematoma. It is simple, cost-effective, and provides rapid recover with a comparable complication rate than other procedures described.

Prevenção de infecções epidérmicas em atletas de luta olímpica


Clin J Sport Med. 2012 Jun 12. [Epub ahead of print]

Effectiveness of Body Wipes as an Adjunct to Reducing Skin Infections in High School Wrestlers.

Source

Primary Care Department, Boynton Health Services, University of Minnesota, Minneapolis, Minnesota.

Abstract

OBJECTIVE:

To compare soap-and-water body wipes and 70% isopropyl alcohol (IPA) body wipes to a CONTROL (no treatment) in reducing skin infections in high school wrestlers competing in weekend tournaments.

DESIGN:

Repeated measures study evaluating a soap-and-water body wipe, a 70% IPA body wipe, and no-treatment CONTROL during 2 weekend tournaments.

SETTING:

High school wrestling tournaments in Minneapolis-St Paul and surrounding communities of Minnesota.

INTERVENTION:

Each team was randomly assigned to use either wipe or serve as CONTROL during each tournament.

MAIN OUTCOME MEASURES:

Presence of skin infections that developed the following week after a weekend tournament.

RESULTS:

A total of 151 athletes competed in a total of 474 individual matches. Thirteen athletes tested positive afterward for skin infections. The odds of infection for the tested group compared with the CONTROL group were 0.089 [95% confidence interval (CI), 0.01-0.75; P = 0.026] for the soap-and-water group and 0.44 (95% CI, 0.11-1.69; P = 0.23) for 70% IPA group.

CONCLUSIONS:

Soap-and-water wipes seem to be more effective in reducing skin infections compared with the no-treatment group.

Avaliação da composição corporal em atletas de judô


J Sports Sci. 2012 Jun 14. [Epub ahead of print]

Is bioelectrical impedance spectroscopy accurate in estimating changes in fat-free mass in judoathletes?

Source

a Exercise and Health Laboratory, Faculty of Human Kinetics, Technical University of Lisbon , Cruz-Quebrada , Portugal.

Abstract

Abstract Bioelectrical impedance spectroscopy (BIS) provides an affordable and practical assessment of fat-free mass (FFM). However, little information is available on the assessment of changes in fat-free mass in top-level athletes using BIS. The aim of this study was to examine the accuracy of BIS in tracking changes in fat-free mass of elite male judo athletes from a period of weight stability to just before competition, using the four-compartment model (4C model) as reference method. In total, 27 elite male judo athletes (age 22.2 ± 2.8 years) were evaluated. Measures of body volume assessed by air displacement plethysmography, bone mineral content by dual-energy X-ray absorptiometry, and total-body water assessed with deuterium dilution were used in a 4C model. Fat-free mass was also assessed by BIS (FFM(BIS)). Changes in FFM(BIS) were not significantly different from measured by the reference method (P = 0.000). Furthermore, the r (2) was 0.62 and the standard error of the estimate was 1.03 kg. The limits of agreement ranged from -3.36 to 2.59 kg with no bias observed. These findings demonstrate the viability of BIS as a valid tool for tracking fat-free mass in elite male judo athletes. However, based on the wide limits of agreement observed, BIS is less valid at an individual level for tracking fat-free mass in these athletes.

Resumo de artigo sobre avaliação psicológica e fisiológica de atletas de TKD


Int J Sports Physiol Perform. 2012 Jun 13. [Epub ahead of print]

Physiological vs Psychological Evaluation in Taekwondo Elite Athletes.

Source

Department of Human Movement and Sport Sciences, University of Rome "Foro Italico", Rome, Italy.

Abstract

PURPOSE:

To anticipate outstanding athletic outcomes the selection process of elite athletes simultaneously considers psycho-physiological and technical parameters. This study aimed to investigate whether Selected and Not Selected athletes for the Italian National taekwondo team could be discriminated by means of sport-specific performances, and psycho-physiological responses to training.

METHODS:

Five established Italian National athletes and 20 elite Italian taekwondo black belt athletes (9 females, 16 males; age: 23.0±3.1yrs; body mass: 67.0±12.1kg) participated in this study. To update the Italian National team roster, the 20 elite athletes participated in a 1-week selection camp (7 training sessions). Selected athletes (n=10) joined Established National athletes during the following 3-week National training period (7 training sessions.week-1). During the 1-week selection camp, differences (p<0.05) between Selected and Not Selected athletes in performances, heart rate responses, blood lactate accumulation [La], subjective ratings of perceived exertion (session-RPE), and mood were examined. During the 3-week national training period, differences (p<0.05) in mood between Selected and Established National athletes were investigated.

RESULTS:

With respect to Not Selected athletes, Selected athletes responded better to training in terms of session-RPE (p=0.047), and [La] (p = 0.046). No difference in performance and mood between subgroups emerged. After the 3-week National training period, differences (p=0.035) emerged for confusion, with decreases in the Established National athletes and increases for recently Selected athletes.

CONCLUSIONS:

Session-RPE and [La] seem to be more effective in discriminating between elite taekwondo athletes than psychological measures. Evaluation of mood could be effective in monitoring the athlete's response to National training.

quinta-feira, 14 de junho de 2012

Artigo a ser publicado envolvendo uchi-komi intermitente em alta intensidade

Depois de um ano para ser rejeitado em outra revista, sairá em outra com FI maior. E depois dizem que uma das premissas da ciência é a lógida : )

Notem que as unidades saíram sem o -1. Acho que apagaram na edição final hahahaha

Tb tenho uma dúvida: no lattes, coloco em aceito como indica o CNPq ou faço como meus nobres colegas que colocam em publicado sempre com a mesma paginação (p.1-9)?


J Strength Cond Res. 2012 Jun 11. [Epub ahead of print]


Physiological and Performance Responses to Intermittent Uchi-komi in Judo.

Franchini E, Panissa VL, Julio UF.

1Department of Sport, School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil Laboratory (s) where the research was conducted: Laboratory of Energetic Determinants of Sport Performance - School of Physical Education and Sport, University of São Paulo, São Paulo.



Abstract

ABSTRACT: The objective of the present study was to compare the physiological and performance responses to different judo techniques and time structure uchi-komi (technique entrance) protocols. Ten judo athletes (25±6 years old, 73±9 kg, 173±5 cm, and 15±6 years of judo experience) were submitted to nine all-out uchi-komi sessions. Three techniques (o-uchi-gari, seoi-nage, and harai-goshi) and three different time structures (18x10s/10s, 9x20s/20s, and 6x30s/30s) were randomly assigned. Two-way and three-way ANOVA with repeated measurements and the Bonferroni test were used. The significance level was fixed at 5%. There was no effect of the time structure or the technique on the absolute energy expenditure (P > 0.05), which can be attributed to the all-out characteristic of the exercise. However, more repetitions were executed during the o-uchi-gari protocol (F = 19; P < 0.001; η = 0.32) compared to harai-goshi and seoi-nage (P < 0.001 for both comparisons). Oxygen consumption differed over time during the activity (F = 767; P < 0.001; η = 0.904), with lower values during the 1 min (32.51 ± 3.21 mL.kg.min) compared to the 2 (41.47 ± 4.20 mL.kg.min) and 3 minutes (42.96 ± 4.29 mL.kg.min), and lower values were recorded in the 2 min compared to the 3 min (P < 0.001 for all comparisons). There was also an effect of technique on the total energy expenditure per repetition (F = 6; P = 0.001; η = 0.128), with o-uchi-gari resulting in lower values compared to seoi-nage (P = 0.003), as the former technique does not involve torso rotation and knee flexion, while the latter technique does. These training protocols resulted in similar oxygen uptake and heart rate responses compared to match simulations, and they can be used to simulate the match demand.


http://www.ncbi.nlm.nih.gov/pubmed/22692119

quarta-feira, 6 de junho de 2012

Direto de Genova

Aquisição do dia, após palestra por aqui. Textos sobre o lutar, pelos lutadores, transcrito e adaptado por autor com nome do meu pai : )




Odeio la guerra

Detesto gli eserciti

Amo combattere

Sul muro di una palestra a Vedano al Lambro

terça-feira, 5 de junho de 2012

Lesões no TKD

Br J Sports Med. 2012 Jun;46(7):485-91.


Competition injuries in taekwondo: a literature review and suggestions for prevention and surveillance.

Pieter W, Fife GP, O'Sullivan DM.

Dong-A University, College of Sports Science, Department of Physical Education, 180 Hadan 2-dong Sahagu, Busan, Gyeongsangnamdo 604714, Republic of Korea. fifeg.dau.ac.kr@gmail.com.



Abstract

Objective To review competition injuries in taekwondo and use this information to develop recommendations to reduce the number and severity of injuries in taekwondo competition. Methods The available literature was searched for prospective studies on taekwondo injuries in adult athletes. An injury was defined as any circumstance for which the athlete sought the assistance of the on-site medical personnel. Injury rates were expressed per athlete-exposures (A-E) and 95% CIs calculated. Results Total injury rates for elite men varied from 20.6/1000 A-E (95% CI 11.8 to 29.3) to 139.5/1000 A-E (95% CI 94.0 to 185.1). For elite women, the rates varied from 25.3/1000 A-E (95% CI 3.1 to 47.4) to 105.5/1000 A-E (95% CI 89.8 to 121.1). About one-third of all injuries (29.6%) in the men were to the head and neck region, while almost half of the injuries (44.5%) were to the lower extremities. In women, 15.2% of injuries were to the head and neck and 53.1% to the lower extremities. The vast majority of all injuries were contusions (42.7% in the men and 62.7% in the women). Point estimates of rates of head injuries and concussions were found to be higher in taekwondo than in other contact sports such as football (soccer) and American gridiron football. Time-loss injury rates in the men varied from 6.9/1000 A-E (95% CI 1.8 to 11.9) to 33.6/1000 A-E (95% CI 18.9 to 48.3). In the women, they varied from 2.4/1000 A-E (95% CI 2.3 to 7.2) to 23.0/1000 A-E (95% CI 15.7 to 30.4). The turning kick was most often involved in causing injury: 56.9% of all injuries in the men and 49.8% in the women. Lack of blocking skills was identified as one of the main injury mechanisms. Conclusions Rule changes should be considered and it is recommended that governing bodies employ qualified medical personnel. Establishing an ongoing injury surveillance system in taekwondo should be the first priority.