Grupo de Estudos e Pesquisas em Lutas, Artes Marciais e Modalidades de Combate
terça-feira, 22 de abril de 2014
segunda-feira, 14 de abril de 2014
quinta-feira, 10 de abril de 2014
Comparação da estrutura temporal e de variáveis técnicas e táticas em diferentes grupos etários em lutas do judô feminino
Parabéns aos envolvidos
A comparison of time-motion and technical–tactical variables between age groups of female judo matches
Journal of Sports Sciences
Bianca Miarka, Rubiana Cury, Ricardo Julianetti, Rafael Battazza, Ursula Julio, Michel Calmet & Emerson Franchini*
Abstract
The aim of the study was to verify differences between age groups of female judo matches in time-motion and technical–tactical analysis. The sample was composed of pre-cadet (13–14 years, n = 148), cadet (15–16 years, n = 228), junior (17–19 years, n = 104) and senior (>20 years, n = 237) groups. The time-motion indicators consisted of total combat time, standing combat time, displacement without contact, gripping time, total time of techniques, groundwork combat time and pause time, per match and by each combat/pause cycle. Technical and tactical variables were also collected. The one-way analysis of variance and a post hoc test were conducted, P ≤ 0.05. Cadets, with a median of 7 (2, 12), had a number of combat/pause cycles different from junior, with 3 (1, 8.5). Regarding time-motion per match and per cycle, senior had longer total combat time, standing combat time and gripping time than other groups. Senior presented lower frequency of leg techniques than pre-cadet, cadet and junior. Time-motion and technical–tactical variables effects in female judo athletes emphasise the difference between seniors and other groups.
Journal of Sports Sciences
Bianca Miarka, Rubiana Cury, Ricardo Julianetti, Rafael Battazza, Ursula Julio, Michel Calmet & Emerson Franchini*
Abstract
The aim of the study was to verify differences between age groups of female judo matches in time-motion and technical–tactical analysis. The sample was composed of pre-cadet (13–14 years, n = 148), cadet (15–16 years, n = 228), junior (17–19 years, n = 104) and senior (>20 years, n = 237) groups. The time-motion indicators consisted of total combat time, standing combat time, displacement without contact, gripping time, total time of techniques, groundwork combat time and pause time, per match and by each combat/pause cycle. Technical and tactical variables were also collected. The one-way analysis of variance and a post hoc test were conducted, P ≤ 0.05. Cadets, with a median of 7 (2, 12), had a number of combat/pause cycles different from junior, with 3 (1, 8.5). Regarding time-motion per match and per cycle, senior had longer total combat time, standing combat time and gripping time than other groups. Senior presented lower frequency of leg techniques than pre-cadet, cadet and junior. Time-motion and technical–tactical variables effects in female judo athletes emphasise the difference between seniors and other groups.
sexta-feira, 4 de abril de 2014
quarta-feira, 26 de março de 2014
Crioterapia no BJJ
Influencia de la crioterapia en la expresión de marcadores de daño muscular en luchadores de jiu-jitsu después de simulación de competición: estudio cruzado
Influence of cryotherapy on muscle damage markers in jiu-jitsu fighters after competition: a cross-over study
E. A. Pinho Júnior, Ciro Brito, W. O. Costa Santos, Charles Nardelli Valido, E. Lacerda Mendes, E. Franchini
Rev Andal Med Deporte. 2014;07:7-12
Objetive. The acute effects of cryotherapy on creatine phosphokinase (CPK) and lactate dehydrogenase (LDH) expression, perceived pain and upper limb muscle strength in jiu-jitsu competitors were investigated.
Method. Ten highly trained athletes underwent two simulated competition sessions composed by four 7-minute combats with a 15-minute interval between them. Athletes were randomly allocated to receive either cold water immersion (5 ± 1 °C for 19 minutes) or no intervention (control) after competition simulation in a crossover counterbalanced fashion.
Results. For LDH, there was an effect of condition (F1,18= 7.91, P = 0.012; η2 = 0.31), with lower values being found in cryotherapy as compared to control (criotherapy = 533.2 ± 55.4 and 671.2 ± 61.0 for pre- competition and post-recuperation, respectively; control = 528.5 ± 63.7 e 759.8 ± 85.7 UI/l for pre- competition and post-recuperation, respectively). Delta CPK differed significantly between conditions (criotherapy = 138.0 ± 95.1 UI/l; control = 231.3 ± 135.8 UI/l t = -1,72; P = 0,119; effect size = 0.75). For perceived pain there was also an effect of condition (F1,18 = 12.35, P = 0.003; η2 = 0.41), with lower values being found following cryotherapy (2.4 ± 1.4 versus 4.4 ± 1.8, P = 0.003). Pre-competition skin temperature was lower than that measured after recovery (34.5 ± 1.9 oC. versus 37.6 ± 1.3 oC, P = 0.0005). There were significant correlations between perceived pain and CPK (r = 0.314) and LDH (r = 0.546). The concentrations of CPK and LDH were negatively correlated with dynamic strength (r = - 0.525).
Conclusion. Recovery via cold water immersion after simulated competition resulted in less muscle damage and hypoalgesia compared to the control.
http://zl.elsevier.es/en/
Influence of cryotherapy on muscle damage markers in jiu-jitsu fighters after competition: a cross-over study
E. A. Pinho Júnior, Ciro Brito, W. O. Costa Santos, Charles Nardelli Valido, E. Lacerda Mendes, E. Franchini
Rev Andal Med Deporte. 2014;07:7-12
Objetive. The acute effects of cryotherapy on creatine phosphokinase (CPK) and lactate dehydrogenase (LDH) expression, perceived pain and upper limb muscle strength in jiu-jitsu competitors were investigated.
Method. Ten highly trained athletes underwent two simulated competition sessions composed by four 7-minute combats with a 15-minute interval between them. Athletes were randomly allocated to receive either cold water immersion (5 ± 1 °C for 19 minutes) or no intervention (control) after competition simulation in a crossover counterbalanced fashion.
Results. For LDH, there was an effect of condition (F1,18= 7.91, P = 0.012; η2 = 0.31), with lower values being found in cryotherapy as compared to control (criotherapy = 533.2 ± 55.4 and 671.2 ± 61.0 for pre- competition and post-recuperation, respectively; control = 528.5 ± 63.7 e 759.8 ± 85.7 UI/l for pre- competition and post-recuperation, respectively). Delta CPK differed significantly between conditions (criotherapy = 138.0 ± 95.1 UI/l; control = 231.3 ± 135.8 UI/l t = -1,72; P = 0,119; effect size = 0.75). For perceived pain there was also an effect of condition (F1,18 = 12.35, P = 0.003; η2 = 0.41), with lower values being found following cryotherapy (2.4 ± 1.4 versus 4.4 ± 1.8, P = 0.003). Pre-competition skin temperature was lower than that measured after recovery (34.5 ± 1.9 oC. versus 37.6 ± 1.3 oC, P = 0.0005). There were significant correlations between perceived pain and CPK (r = 0.314) and LDH (r = 0.546). The concentrations of CPK and LDH were negatively correlated with dynamic strength (r = - 0.525).
Conclusion. Recovery via cold water immersion after simulated competition resulted in less muscle damage and hypoalgesia compared to the control.
http://zl.elsevier.es/en/
terça-feira, 25 de março de 2014
Protocolos de progressão do treino de força para atletas de judô
Influence of linear and undulating strength periodization on physical fitness, physiological and performance responses to simulated judo matches
Franchini, Emerson; Branco, Braulio M.; Agostinho, Marcus F.; Calmet, Michel; Candau, Robin
Journal of Strength & Conditioning Research:
doi: 10.1519/JSC.0000000000000460
Published Ahead-of-Print
Abstract
To determine the most effective strength periodization model is important to improve judo athletes' performance. Thus, the aim of this study was to compare the effects of linear and daily undulating periodized resistance training on anthropometrical, strength and judo-specific performance. For this, 13 adult male judo athletes (LP = 6 and DUP = 7) completed a 8-week training program concomitantly to a typical judo training program. Athletes were submitted to a physical fitness test battery, before and after 8 weeks of training, consisting of: (a) maximal strength evaluation - bench press, squat and row exercises one-repetition maximum (1RM) tests, and handgrip maximal isometric strength; (b) power evaluation - standing long jump test; (c) strength endurance evaluation - dynamic and isometric chin up tests gripping the judogi; (d) anthropometry measurements - body mass, height, skinfold thickness and circumferences; (e) judo-specific fitness - performance during the Special Judo Fitness Test; (f) match simulation - three 5-min judo match simulations separated by 15-min passive recovery. Eight weeks of linear and undulating strength-training protocols induced similar significant (P < 0.05) decreases in skinfold thicknesses (-6.5%) and increases in flexed arm (2.0%) and forearm (1.8%) circumferences, maximal isometric handgrip strength (4.6% and 6.1% for right and left hands, respectively), isometric strength-endurance chin-up performance gripping the judogi (18.9%), maximal dynamic strength for row (11.5%), bench-press (11.6%) and squat exercises (7.1%), total weight lifted at 70% 1RM for bench-press (15.1%) and squat (9.6%) exercises, number of throws during sets B (3.1%) and C (9.5%) of the SJFT (resulting in increased total number of throws - 5.5%) and decreased index in this test, -4.2%). However, no changes were observed in the physiological, rating of perceived exertion or technical actions during three match simulations. Thus, it seems that the short-term adaptations were not transferable to the match condition.
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