https://docs.google.com/open?id=0B6F18t_8Glc7TmtFeFN1d2hTWTA
https://docs.google.com/open?id=0B6F18t_8Glc7M1ZwbkRyc18xcTg
O material sobre perda de peso será tema da próxima avaliação.
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quarta-feira, 23 de maio de 2012
Técnica e tática em atletas pré-adolescentes de TKD
J Strength Cond Res. 2012 Jun;26(6):1489-95.
Technical and tactical analysis of youth taekwondo performance.
Source
1Department of Human Movement and Sport Sciences, University of Rome "Foro Italico," Rome, Italy 2Department of Clinical and Experimental Medicine, University of Magna Graecia, Catanzaro, Italy 3Italian Taekwondo Federation, Rome, Italy.
Abstract
ABSTRACT: Casolino, E, Lupo, C, Cortis, C, Chiodo, S, Minganti, C, Capranica, L, and Tessitore, A. Technical and tactical analysis of youthtaekwondo performance. J Strength Cond Res 26(6): 1489-1495, 2012-This study aimed to analyze the technical and tactical aspects of young athletes during official taekwondo competitions. Fifty-nine youth taekwondo athletes (43 boys and 16 girls; age range: 10-12 years; weight category range: <24 to >59 kg) with at least 2 years of taekwondo training consisting of three 90-minute training sessions for 3 d·wk participated in this study. Thirty-seven matches (three 1-minute rounds, with 1-minute rest in between) were analyzed to verify the differences (p ≤ 0.05) in offensive and defensive actions in relation to gender (male, female), match outcome (winners, nonwinners), kicking leg (front, rear), and round (first, second, third). No difference emerged for gender and match outcome. With respect to defensive actions (8.4 ± 12.0%), youth athletes engaged more frequently (p < 0.0001) in offensive actions (91.6 ± 12.0%), which showed a significant decrease (p < 0.016) from the first round (42.3 ± 21.8%) to the second (33.1 ± 14.8%) and third (24.5 ± 16.0%) ones. Kicks performed with the rear leg (94.4 ± 7.8%) occurred more frequently (p < 0.0001) than those performed with the front leg (5.6 ± 7.8%). In considering that a high level of coordination is required to perform front-leg kicks and defensive actions necessitate a high level of tactical skills, these findings might indicate a not-yet complete attainment of fundamental coordinative capabilities in 10- to 12-year-old athletes, independently of match outcome. To enhance coordination capabilities in youth athletes, coaches are recommended to structure their training including skill-ability and sport-ability drills.
Pesquisa qualitativa sobre perda de peso entre atletas de luta
Appetite. 2012 May 16. [Epub ahead of print]
The Food and Weight Combat: A Problematic Fight for the Elite Combat Sports Athlete.
Source
Department of Food and Nutrition, and Sport Science, University of Gothenburg, Göteborg, Sweden.
Abstract
Weight reduction in athletes is motivated by optimisation of performance, aesthetic reasons or to achieve a pre-designated weight. Previous research has shown that dietary restraint and short term weight regulation frequently takes place among combat sports athletes such as wrestlers and judokas. The aim of this study was to explore negative experiences related to dietary strategies and weight-making practises used by elite combat sports athletes. Using semi-structured interviews, 14 Swedish national team athletes in wrestling, judo and taekwondo were asked about their dietary intake and their engagement in both long- and short-term weight regulation practises. Content analysis of the transcribed interviews, display a constant struggle regarding nutritional standpoints. Sport demands such as achieving an optimal weight and nutritional intake were considered as central in order for excellent performance. Adhering to these demands was found to be problematic however, primarily because of; (1) negative physiological responses, and (2) opposing ideals of a non-sport related nature, such as the importance of the athletes to be healthy and social in their everyday lives.
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