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quarta-feira, 8 de agosto de 2012
Boxe amador: perfil de ações de vencedores e perdedores
Int J Sports Physiol Perform. 2012 Jul 31. [Epub ahead of print]
Amateur Boxing: Activity Profile of Winners and Losers.
Source
Centre for Sport and Exercise Science, Biological Sciences, University of Essex, United Kingdom.
Abstract
An activity profile of competitive 3x2min novice level amateur boxing was created based on video footage and post-bout blood [lactate] in thirty-two male boxers (mean±SD) age: 19.3±1.4years, body mass: 62.6±4.1kg. Winners landed 18±11 more punches than losers by applying more lead hand punches in round 1 (34.2±10.9 vs. 26.5±9.4), total punches to the head (121.3±10.2 vs. 96.0±9.8) and block and counter punch combinations (2.8±1.1 vs. 0.1±0.2) over all 3 rounds, and punching combinations (44.3±6.4 vs. 28.8±6.7) in rounds 1 and 3 (all p<0 .05=".05" 1.8mmol="1.8mmol" 11.8="11.8" 16="16" a="a" ability="ability" able="able" activity="activity" and="and" at="at" attacking="attacking" be="be" blood="blood" boxers="boxers" combinations.="combinations." counter-attack.="counter-attack." defensive="defensive" frequency="frequency" hand="hand" head="head" high="high" in="in" initiate="initiate" irrespective="irrespective" l-1.min-1="l-1.min-1" l-1="l-1" lactate="lactate" landing="landing" lead="lead" losing.="losing." maintain="maintain" mmol="mmol" movements="movements" must="must" of="of" or="or" p="p" particular="particular" peak="peak" post-bout="post-bout" production="production" punch="punch" punches="punches" punching="punching" rate.="rate." rate="rate" requires="requires" results="results" skilful="skilful" straight="straight" sufficient="sufficient" suggest="suggest" suggests="suggests" techniques="techniques" that="that" the="the" to="to" together="together" tolerate="tolerate" was="was" winning="winning" with="with">
segunda-feira, 6 de agosto de 2012
Status biomotor de estudantes e praticantes de karate
Coll Antropol. 2012 Jun;36(2):555-62.
Biomotor status and kinesiological education of students aged 13 to 15 years - example: karate.
Source
University of Split, Faculty of Kinesiology, Split, Croatia. ratko.katic@gmail.com
Abstract
The aim of this paper was to obtain information relevant for efficient selection in karate, based on comparison of biomotor status of male/female 7th and 8th grade students in primary school "Bijaći" from Kastel Novi and karate practitioners and non-practitioners (cadets) in Croatia. For this purpose, a sample was drawn of 352 primary school students (150 males and 152 females) and 50 karate practitioners (25 males and 25 females), all aged 13 to 15 years, and 2 morphological measures (body height and body mass) and a battery of 6 motor tests was used. A biomotor system which determines the situation efficacy in male and female karate practitioners was defined based on the comparison of test results of students from Kastela, Croatian karateka and Croatian standards, factor analysis of applied variables and discriminant analysis of those variables between karateathletes and students from Kastela. In male karate athletes, general motor efficacy in karate is based on explosive strength of jumping type, repetitive strength of the trunk and coordination, followed by flexibility, static strength of the arms, and movement frequency speed. In female karate athletes, integration of force, coordination, muscle tone regulation and speed is dominant for achieving success in karate. Female karate athletes use speed and fine muscle tone regulation in motor functioning more than male karate athletes, who use basic strength more.
segunda-feira, 30 de julho de 2012
sexta-feira, 27 de julho de 2012
domingo, 22 de julho de 2012
Resumo sobre TKD
hys Ther Sport. 2012 Aug;13(3):163-9. Epub 2011 Aug 27.
Taekwondo training improves the neuromotor excitability and reaction of large and small muscles.
Source
The Hong Kong Polytechnic University, Department of Rehabilitation Sciences, Hung Hom, Hong Kong.
Abstract
OBJECTIVES:
This study measured the neuromotor excitability and reaction time in professional and amateur Taekwondo (TKD) practitioners and compared them with non-athletes.
DESIGN:
A cross-sectional cohort study design.
SETTING:
Exercise laboratory setting.
PARTICIPANTS:
40 TKD practitioners (20 professionals, 20 amateurs) and 20 non-athletes.
MAIN OUTCOME MEASURES:
Neuromotor excitability (rheobase), premotor reaction time (PRT), total reaction time (TRT) and electromechanical delay (EMD) of rectus femoris (RF) and flexor pollicis brevis (FPB) in response to audio and visual stimuli were measured. The professional TKD practitioners have shorter TRT than non-athletes with sport-specific visual stimuli but they have longer PRT and TRT in response to audio stimuli than the amateur practitioners and non-athletes.
RESULTS:
The professional practitioners have longer EMD than the amateurs in responding to audio (p = 0.032) and sports-specific visual stimuli (p = 0.03) in FPB. Professional practitioners have higher excitability in RF (p < 0.001) than the amateurs and non-athletes.
CONCLUSION:
We conclude that professional TKD practitioners have better neuromotor ability in both large and small muscles with faster reactions to sport-specific stimuli, suggesting a generalized training effect across muscles. They react slower to non-sport specific stimuli, which suggested a decreased sensitivity to irrelevant sensory inputs after intensive TKD training.
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