Prática de TKD e desenvolvimento do equilíbrio e de funções sensoriais

J Sci Med Sport. 2011 Jul 27. [Epub ahead of print]

Taekwondo training speeds up the development of balance and sensory functions in young adolescents.
Fong SS, Fu SN, Ng GY.
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong (SAR), China.
Abstract
Objectives: This study aimed (1) to identify the developmental status of balance and sensory functions in young adolescents as compared to adults and, (2) to explore the effect of Taekwondo (TKD) training on the development of balance and sensory systems in young adolescents. Design: Cross-sectional controlled trial. Methods: Sixty-six participants including 42 adolescents (21 TKD practitioners, 21 non-TKD practitioners) and 24 adults were tested. The sway velocity of centre of gravity was recorded during standing on the non-dominant leg on a Smart Equitest(®) system. The somatosensory, vestibular and visual ratios were also measured with the machine. Results: Adult participants swayed slower than both TKD and non-TKD adolescent groups during single leg stance with eyes open (p=0.007 and p<0.001, respectively). The TKD adolescent group, in turn, swayed slower than the non-TKD adolescent group (p<0.001). Adult participants had better visual ratio than both TKD and non-TKD adolescents (p=0.001 and p<0.001, respectively) while there was no difference between the TKD and non-TKD adolescents (p=0.164). For the vestibular ratio, there was no significant difference between adult participants and TKD adolescents (p=0.432). Adolescents who did not practice TKD showed significantly lower vestibular ratio than TKD adolescents and adults (p=0.003 and p<0.001, respectively). In addition, there was no significant difference in the somatosensory ratio among the 3 participant groups (p=0.711). Conclusions: Participation in TKD appears to speed up the development of postural control and vestibular function in adolescents. Clinicians might advocate TKD exercise as a therapeutic intervention for young people with balance or vestibular dysfunctions.

Judô II EEFE-USP

Cronograma
https://docs.google.com/document/d/1QAK-Q1muCZVXPNU1kxMwoazuqMRXmfj2nKm66thahA8/edit?hl=en_US

Cronograma e detalhes da disciplina
https://docs.google.com/present/edit?id=0AaF18t_8Glc7ZGN2ZDRjcG1fMTAzNmRyZzNmejM3&hl=en_US

Reuniões do 2o semestre de 2011

Local: sala 66 da EEFE-USP

Horário: 13:30-15:20h

Cronograma
05/08 – Reunião inicial e direcionamento de atividades durante o semestre
19/08 - Participação no Simpósio dos alunos de pós-graduação da EEFE-USP (a partir das 15h)
02/09 – Defesa de mestrado do Fábio Campos. Leitura recomendada: Campos FA, Bertuzzi R, Dourado AC, Santos VG, Franchini E. Energy demands in taekwondo athletes during combat simulation. Eur J Appl Physiol. 2011 Jul 17. [Epub ahead of print]
16/09 – Apresentação de projetos de pesquisa dos candidatos do grupo ao ingresso no mestrado da EEFE (15 min cada): Diego Morine; Jonatas Ferreira da Silva Santos; Paula Avakian
30/09 – CANCELADA Apresentação do projeto de doutorado da Ursula Ferreira Julio
14/10 – CANCELADA Defesa de dissertação ou ensaio do Mário Miranda
28/10 – CANCELADA Relato de participação no International Technical Scientific Conference on Combat Sport (Itália)
04/11 – CANCELADA Defesa de dissertação ou ensaio do Juliano Schwartz
18/11 – Barbas Ioannis; Fatouros Ioannis G.; Douroudos Ioannis I.; et al. Physiological and performance adaptations of elite Greco-Roman wrestlers during a one-day tournament EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY Volume: 111 Issue: 7 Pages: 1421-1436 DOI: 10.1007/s00421-010-1761-7 Published: JUL 2011. Responsável pela apresentação do artigo: Leonardo Vidal Andreato
02/12 – Encerramento e análise de 2011

Artigo de validação do programa desenvolvido pela Bianca

Objectivity of FRAMI-Software for Judo Match Analysis

Miarka, Bianca; Hayashida, Carlos Roberto; Julio, Ursula Ferreira; Calmet, Michel; Franchini, Emerson
International Journal of Performance Analysis in Sport, Volume 11, Number 2, August 2011 , pp. 254-266(13)


Abstract:

The use of technology can greatly improve performance analysis in sport. The purpose of this paper is to present objectivity measures from the computer software for judo matches, called FRAMI. In order to verify objectivity measures, 573 matches of two different levels of championships (regional and state matches) were taped. Next, the data was assessed through intra and inter-observer testing procedures. In inter-observer comparison, the first expert selected 10 combats in a randomized form and had analyzed 20 athletes' performances, the second expert analyzed the same 20 athletes and the third expert analyzed the same 20 athletes. After this procedure, the last expert analyzed the same sample two more times for intra-observer testing. The following groups of match variables were considered: time structure; penalties; execution, orientation and scores of attack techniques, and; gripping types. In order to verify concordance, means were compared and a quartile criteria of the confidence interval was established by φ ≥ 0.70, where concordance was classified as strong (q ≤ 30%), moderate (30% < q ≤ 60%) or weak (q > 60%). The computer program showed a strong concordance between and within the evaluators' comparisons, from a total of 42 criteria, since their replies were almost totally identical (86.11% are strong or absolute). Variables with weak classification will be grouped for better results. In conclusion, this software can clarify the understanding of technical and tactical judo match analysis with very good accuracy.

Artigo sobre aspectos fisiológicos do karate

Revista da Educação Física/UEM, Vol. 22, No 1 (2011)

Avaliação e comparação das respostas da percepção subjetiva de esforço e concentração de lactato em uma competição oficial de karate
Vinicius Milanez, Manoel Lima, Luiz Perandini, Cassio Gonçalves, Emerson Franchini
Resumo
Diversos indicadores fisiológicos podem ser usados para estimar a intensidade do esforço, tais como frequência cardíaca (FC), consumo de oxigênio (VO2), concentração de lactato ([Lac]) e percepção subjetiva de esforço (PSE). O objetivo do estudo foi avaliar e comparar as respostas da PSE e da [Lac] em uma competição oficial de caratê. Sete atletas participaram de uma competição interestadual, na qual foram mensuradas as variáveis [Lac] e a PSE mediante duas escalas, Borg 6-20 (PSE6-20) e CR-10 (PSECR-10), para estimar a intensidade do esforço. Os valores médios ± desvios padrão encontrados foram: pico de [Lac] = 7,6 ± 1,4 mM, PSE6-20 = 12 ± 3 e PSECR-10 = 3 ± 1. Foram encontradas correlação forte entre PSECR-10 e [Lac]pico (r = 0,82) e correlação moderada entre PSE6-20 e [Lac]pico (r = 0,62). Com base nos resultados observou-se que ambas as escalas apresentadas em momentos diferentes, podem ser aplicadas de maneira eficiente para mensurar o esforço realizado por caratecas durante a competição.
http://periodicos.uem.br/ojs/index.php/RevEducFis/article/view/8058/7523

Densidade mineral óssea e perda de peso

J Bone Miner Metab. 2011 Jul 20. [Epub ahead of print]

Weight regulation and bone mass: a comparison between professional jockeys, elite amateur boxers, and age, gender and BMI matched controls.
Dolan E, Crabtree N, McGoldrick A, Ashley DT, McCaffrey N, Warrington GD.
School of Health and Human Performance, Dublin City University, Glasnevin, Dublin 9, Ireland, eimeardol@gmail.com.

Abstract
The aim of this study was to compare bone mass between two groups of jockeys (flat: n = 14; national hunt: n = 16); boxers (n = 14) and age, gender and BMI matched controls (n = 14). All subjects underwent dual energy X-ray absorptiometry (DXA) scanning for assessment of bone mass, with measurements made of the total body, vertebra L2-4 and femoral neck. Body composition and the relative contribution of fat and lean mass were extrapolated from the results. Data were analysed in accordance with differences in body composition, in particular, height, lean mass, fat mass and age. Both jockey groups were shown to display lower bone mass than either the boxers or control group at a number of sites including total body bone mineral density (BMD) (1.019 ± 0.06 and 1.17 ± 1.05 vs. 1.26 ± 0.01 and 1.26 ± 0.06 g cm(-2) for flat, national hunt, boxer and control, respectively), total body bone mineral content (BMC) less head, L2-4 BMD and femoral neck BMD and BMC (p < 0.05). Regression analysis revealed that lean mass and height were the primary predictors of total body BMC, although additional group-specific influences were present which reduced bone mass in the flat jockey group and enhanced it in the boxers (R (2) = 0.814). Reduced bone mass in jockeys may be a consequence of reduced energy availability in response to chronic weight restriction and could have particular implications for these athletes in light of the high risk nature of the sport. In contrast, the high intensity, high impact training associated with boxing may have conveyed an osteogenic stimulus on these athletes.

Burn out em treinadores de judô

Assunto interessante, relevante e pouco estudado...
J Occup Health. 2011 Jul 20. [Epub ahead of print]

Burnout among Judo Coaches in Turkey.
Gencay S, Gencay OA.
Department of Physical Education and Sport Teaching, School of Physical Education and Sport, Kahramanmaras Sutcu Imam University.

Abstract
Objectives: The purpose of this study was to determine the prevalence of professional burnout experienced by Turkish judo coaches and to compare possible differences in the three burnout dimensions based on coaching experience in years and satisfaction status of their sport administrators. Methods: The data were obtained by using a three-section questionnaire including a socio demographic data form and the Turkish version of the Maslach Burnout Inventory from 65 judo coaches working in the Turkish Judo and Kurash Federation. Results: In the analysis of data, descriptive statistics (mean and standard deviation) and one-way ANOVA tests were used. This study showed that judo coaches have medium level burnout experience. The results also showed that there were significant differences in the emotional exhaustion levels of judo coaches based on coaching experience in years and satisfaction status from their sport administrators. Conclusions: Burnout appears to be a problematic issue for judo coaches. When coaches begin to feel emotionally depleted, they distance themselves from athletes, and experience a reduced sense of meaning about their work; it is likely to affect the quality of the athletic experience for both the coach and the athletes.