quarta-feira, 26 de novembro de 2014

segunda-feira, 3 de novembro de 2014

Treinamento aeróbio para atletas de judô

 2014 Oct 30. [Epub ahead of print]

Aerobic training program for the enhancements of HR and VO2 off-kinetics in elite judo athletes.



The purpose of this study was to investigate the physiologic and performance changes with the addition of high-intensity interval training (HIIT) to a traditional judo programme.


Nine elite judokas (6 males and 3 females; age: 20±4 yrs; body mass: 69±2 kg; height: 172±7 cm; judo practice time: 13±6 yrs; weekly training volume: 13±5 hours, mean±SD) were recruited to perform a 12-week specific aerobic training program, which consisted of 2 session/week of 30-min continuous run at 60% at Vmax and one session/week of high-intensity interval training 15x1-min at 90% of Vmax with1 min of active recovery at 60% of Vmax. Before and after the intervention all athletes performed a graded maximal exercise test to measure maximal oxygen consumption ( max), ventilatory threshold (VT), maximal velocity (Vmax), heart rate (HR) and  off kinetics. and HR recovery kinetics were evaluated on a breath-by-breath basis using a single component exponential function. Anaerobic capacity during specific movements was assessed with the Special Judo Fitness Test (SJFT).


The maximal speed reached during the maximal aerobic power test significantly increased (p=0.04), but VO2max did not change. τ of HR and of  recovery significantly decreased by 17.3% (p=0.04) and 22.0% (p<0.01), respectively. VT increased (6.6%; p=0.03) and the SJFT Index improved (p<0.001) 12% after training.


The aerobic fitness of elite judokas may be improved by adding aerobic routines to the normal training enhancing the recovery capacity.

Estrutura temporal e ações técnicas no Mundial de Karate 2012

 2014 Oct 30:1-9. [Epub ahead of print]

Time-motion, tactical and technical analysis in top-level karatekas according to gender, match outcome and weight categories.


Abstract The aim of this study was to define the time-motion (i.e., fighting, preparatory and breaking activity), technical (i.e., attack, timed-attack, counterattack, blocking and grasps) and tactical (i.e., upper limb, lower-limb, combination and throwing) profiles of the senior top-level karate competition played under the most recent rules of the International Karate Federation in relation to gender, match outcome and weight categories. Time-motion, tactical actions and technical executions were investigated of senior karatekas (n = 60) during the Karate World Championship. The referee's decisions caused an overall activity-to-break ratio of ~1:1.5 with a significant difference (P = 0.025) between karateka's weight categories (light = 1:1.5; middle = 1:2 and heavy = 1:1). High-intensity actions (i.e., attack and defensive actions performed quickly and powerfully) were higher in male compared to female athletes. Top-level karatekas used upper limb techniques more than lower limb ones, with both applied in the head more than in the body. For the high-intensity-actions to pause ratio and the percentage of combined techniques, light weight category was significantly higher than middle weight category. These findings suggest that training programs may need to be specific to the requirements of the gender and weight categories.