terça-feira, 30 de junho de 2015

Artigo sobre BJJ na edição de julho do JSCR

Competição simulada de BJJ: desempenho físico, estrutura temporal, análises técnicas e táticas e respostas perceptivas
Journal of Strength & Conditioning Research:
July 2015 - Volume 29 - Issue 7 - p 2015–2025
doi: 10.1519/JSC.0000000000000819
Brazilian Jiu-Jitsu Simulated Competition Part II: Physical Performance, Time-Motion, Technical-Tactical Analyses, and Perceptual Responses
Andreato, Leonardo V.1,2; Julio, Ursula F.1; Gonçalves Panissa, Valeria L.1; Del Conti Esteves, João V.3; Hardt, Felipe1; Franzói de Moraes, Solange M.4; Oliveira de Souza, Camila3; Franchini, Emerson1
The aim of this study was to analyze performance, time structure, technical actions, and perceptual responses in Brazilian jiu-jitsu athletes during a simulated competition. For this purpose, 10 athletes were analyzed in a simulated competition (4 matches of 10 minutes). Physical tests and scales of the perception of effort and recovery were applied. The matches were recorded for the purpose of technical-tactical analysis and to determine the time structure. The main results show that in the simulated competition, reaction time (F2.5,17.6 = 2.7; p = 0.087; η2 = 0.28) and flexibility (F7,63 = 1.5; p = 0.172; η2 = 0.15) were unchanged across the matches. An analysis of variance showed a significant difference for grip endurance using the kimono (F2.0,15.9 = 8.1; p = 0.004; η2 = 0.50), which was not confirmed by the Bonferroni test. Jump height indicated postactivation potentiation after match 2 (F7,63 = 3.5; p = 0.003; η2 = 0.28). The maximal isometric handgrip strength in the dominant hand (F3.2,28.6 = 2.9; p = 0.049; η2 = 0.24) and in the nondominant hand (F7,63 = 3.8; p = 0.002; η2 = 0.30) showed a decline after matches 3 and 4. Although these data indicate the onset of fatigue, the effort/pause ratio of the matches was not altered (F3,12 = 0.6; p = 0.624; η2 = 0.13). The perceptions of effort (F3,27 = 0.9; p = 0.469; η2 = 0.09) and recovery (F1.9,17.0 = 2.4; p = 0.125; η2 = 0.21) and the degree of fatigue reported (F1.5,13.8 = 0.5; p = 0.588; η2 = 0.05) did not change during the simulated competition. Thus, it may be concluded that the execution of successive matches causes a decline in maximal isometric handgrip strength. No changes in the time structure of the matches or in the perceptual responses were observed.

sexta-feira, 26 de junho de 2015

Trabalho com atletas da seleção brasileira de boxe

Loturco, Irineu; Nakamura, Fabio Yuzo; Artioli, Guilherme Giannini; Kobal, Ronaldo; Kitamura, Katia; Cal Abad, Cesar Cavinato; Cruz, Igor Freitas; Romano, Felipe; Pereira, Lucas Adriano; Franchini, Emerson
Journal of Strength & Conditioning Research


This study investigated the relationship between punching impact and selected strength and power variables in 15 amateur boxers from the Brazilian National Team (9 men and 6 women). Punching impact was assessed in the following conditions: 3 jabs starting from the standardized position (FJ), 3 crosses starting from the standardized position (FC), 3 jabs starting from a self-selected position and (SSJ) and 3 crosses starting from a self-selected position (SSC). For punching tests, a force platform (1.02 m x 0.76 m) covered by a body shield was mounted on the wall at a height of 1 m, perpendicular to the floor. The selected strength and power variables were: vertical jump height (in squat jump [SJ] and countermovement jump [CMJ]), mean propulsive power (MPP) in the jump squat (JS), bench press (BP), and bench throw (BT), maximum isometric force (MIF) in squat and BP, and rate of force development (RFD) in the squat and BP. Sex and position main effects were observed, with higher impact for males compared to females (P< 0.05) and the self-selected distance resulting in higher impact in the jab technique compared to the fixed distance (P< 0.05). Finally, the correlations between strength/power variables and punching impact indices ranged between 0.67 and 0.85. Due to the strong associations between punching impact and strength/power variables (e.g., lower limb muscle power), this study provides important information for coaches to specifically design better training strategies to improve punching impact.

quarta-feira, 27 de maio de 2015

PPA no taekwondo

 2015 Jun;29(6):1640-1647.

Can Different Conditioning Activities and Rest Intervals Affect the Acute Performance of Taekwondo Turning Kick?


da Silva Santos, JF, Valenzuela, TH, and Franchini, E. Can different conditioning activities and rest intervals affect the acute performance of taekwondo turning kick? J Strength Cond Res 29(6): 1640-1647, 2015-This study compared the acute effect of strength, plyometric, and complex exercises (combined strength and plyometric exercise) in the countermovement jump (CMJ) and frequency speed of kick test (FSKT) and attempted to establish the best rest interval to maximize performance in the CMJ, number of kicks, and impact generated during FSKT. Eleven taekwondo athletes (mean ± SD; age: 20.3 ± 5.2 years; body mass: 71.8 ± 15.3 kg; height: 177 ± 7.2 cm) participated. One control and 9 experimental conditions were randomly applied. Each condition was composed of warm-up, conditioning activity (half-squat: 3 × 1 at 95% 1RM; jumps: 3 × 10 vertical jumps above 40-cm barrier; or complex exercise: half-squat 3 × 2 at 95% 1RM + 4 vertical jumps above 40-cm barrier), followed by different rest intervals (5-, 10-minute, and self-selected) before CMJ and FSKT. The conditions were compared using an analysis of variance with repeated measures, followed by Bonferroni's post hoc test. The alpha level was set at 5%. Significant difference was found in the number of kicks (F9,90 = 1.32; p = 0.239; and η = 0.116 [small]). The complex method with a 10-minute rest interval (23 ± 5 repetitions) was superior (p = 0.026) to the control (19 ± 3 repetitions), maximum strength with a self-selected rest interval (328 ± 139 seconds; 18 ± 2 repetitions) (p = 0.015), and plyometric with a 5-minute rest interval (18 ± 3 repetitions) (p < 0.001). Our results indicate that taekwondo athletes increased the number of kicks in a specific test by using the complex method when 10-minute rest interval was used.

sexta-feira, 15 de maio de 2015

Aptidão física relacionada à saúde em praticantes de artes marciais e modalidades de combate

Sport Sciences for HealthFounded by the Faculty of Exercise Science - University of Milan, official journal of the Italian Society of Exercise and Sport Sciences
© Springer-Verlag Italia 2015

Health-related physical fitness in martial arts and combat sports practitioners

Juliano Schwartz1, 2Monica Y. Takito3Fabrício B. Del Vecchio1, 4Leandro S. Antonietti2 andEmerson Franchini 
Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of São Paulo, Av Prof. Melo de Moraes, 65 Butantã, São Paulo, 05508-030, Brazil
Graduate Exercise Physiology Course, University of São Paulo, São Paulo, Brazil
School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil
Superior School of Physical Education, Federal University of Pelotas, Pelotas, Brazil
Emerson Franchini
Received: 6 March 2015Accepted: 4 May 2015Published online: 16 May 2015
To evaluate health-related physical fitness in martial arts and combat sports practitioners.
935 adult, male practitioners of Brazilian jiu-jitsu, judo, karate, kung-fu, and taekwondo were evaluated using the fitness assessment tests proposed by the American College of Sports Medicine. Data were analyzed using descriptive statistics, correspondence analysis, and analysis of variance, with a significance level of 5 % in all analyses.
Most subjects had a body mass index between overweight (karate, Brazilian jiu-jitsu and judo) and normal (kung-fu and taekwondo). Waist–hip ratio and body fat percentage indicated moderate risks for all groups. Regarding VO2max, the kung-fu group showed lower scores compared to the Brazilian jiu-jitsu and judo groups, although all groups were above average in comparison with the standard population. Furthermore, most practitioners were classified as below average concerning muscle strength in all styles, while the kung-fu group was rated as poor. Concerning strength endurance all groups were classified as above average, and the Brazilian jiu-jitsu group showed higher scores when compared to taekwondo and judo groups, the latter showing lower scores than the kung-fu group. Flexibility was classified as average in all groups, and the Brazilian jiu-jitsu group had lower scores when compared to the karate, taekwondo, and kung-fu groups, with this last one showing better results when compared to the judo group.
Instructors should create strategies to improve muscle strength and body composition or practitioners should engage in other physical activities to achieve a better result in these components, the only ones not above average.
 Oxygen consumption Muscle strength Flexibility Body composition

Circuito de kickboxing

 2015 May 11. [Epub ahead of print]

Development of a Non-Contact Kickboxing Circuit Training Protocol that simulates Elite Male Kickboxing Competition.


The aim of the current study was to verify whether the specific kickboxing circuit training protocol (SKCTP) could reproduce kickboxing combat's hormonal, physiological and physical responses. Twenty athletes of regional and national level volunteered to participate in the study (mean±SD) age: 21.3±2.7 years, height: 170±0.5 cm, body mass: 73.9±13.9 kg. After familiarisation, SKCTP was conducted one week prior to a kickboxing competition. Cortisol, testosterone, growth hormone (GH), blood lactate [La] and glucose concentrations, as well as Wingate upper body test, countermovement jump (CMJ) performances were measured pre and post SKCTP and combat. Heart rate (HR) and rating of perceived exertion (RPE) were measured throughout rounds (R) R1, R2 and R3. Testosterone, GH, glucose, [La], HR, RPE and CMJ did not differ among the two conditions (P>0.05). However, Cortisol was higher for competition (P =0.038), while both peak (P =0.003) and mean power (P <0.001) were higher in SKCTP. The study suggests that SKCTP replicates the hormonal, physiological and physical aspects of competition. It is therefore suggested as a good form of specific kickboxing training, as well as a specific assessment tool to be used by kickboxing coaches to quantify kickboxers' fitness levels, when physiological parameters responses to the test are measured.

segunda-feira, 4 de maio de 2015

Treinamento de atletas de judô

Artigo sobre a especificidade das adaptações ao treinamento de judô. Estudo conduzido em 2004, na Universidade Mackenzie, avaliando o treinamento dos atletas do GR Barueri, sob o comando do Prof. Luciano Matheus.
Specificity of performance adaptations to a periodized judo training programOriginal Research Article
Pages 67-72
Emerson FranchiniFabrício Boscolo Del VecchioUrsula Julio, L. Matheus, R. Candau
O judô é um esporte de combate caracterizado por esforços intermitentes de elevada intensidade. Para lidar com a demanda competitiva, a periodização do treinamento deve ser adotada para melhorar o desempenho de atletas de judô. Assim, o objetivo do presente estudo foi monitorar as mudanças em diferentes variáveis durante o treinamento periodizado de judô.
Dez atletas de judo adultos foram avaliados com intervalo de 18 semanas, no começo do período preparatório e uma semana antes da principal competição do período competitivo. Durante esse estudo observacional, as variáveis consideradas foram: composição corporal, potência e capacidade anaeróbias de membros superiores e inferiores, potência muscular de membros inferiores, potência aeróbia de membros superiores e inferiores, força máxima, resistência de força e desempenho específico do judô. O teste t de Student foi utilizado para comparar as variáveis entre os períodos.
Ao final deste período os atletas apresentaram aumento significante na potência (pré = 535 ± 74 W; pós = 617 ± 81 W; 15%) e capacidade anaeróbias de membros superiores (pré = 344 ± 29 W; pós = 402 ± 38 W; 17%), potência anaeróbia de membros inferiores (pré = 778 ± 77 W; pós = 882 ± 130 W; 13%), resistência de força isométrica de pegada (pré = 31 ± 17 s; pós = 43 ± 15 s; 39%), resistência de força dinâmica de pegada (pré = 7 ± 5 rep;pós = 11 ± 5 rep; 57%), potência aeróbia de membros superiores (pré = 113 ± 25 W; pós = 122 ± 29 W; 8%) e 1RM na remada (pré = 85 ± 23 kg; pós = 92 ± 26 kg; 8%). A composição corporal, o desempenho específico ao judô, a força máxima isométrica de preensão manual, o 1RM no supino, o número de repetições a 70% de 1RM na remada e no supino e a potência muscular de membros inferiores foram mantidas. Os atletas apresentaram decréscimo na potência aeróbia de membros inferiores (pré = 235 ± 62 W;pós = 209 ± 43 W; 11%).
Os resultados do presente estudo indicam que as mudanças durante um programa periodizado de treinamento de judô foram específicas à demanda da luta, embora nem todas as variáveis tenham melhorado ao longo do período analisado.

sábado, 25 de abril de 2015

Revisão sobre karate

Physiological responses to karate specific activities

Les réponses physiologiques aux activités spécifiques de karaté
  • H. Chaabènead
  • E. Franchinie
  • S. Sterkowiczc
  • M. Tabbenbf
  • Y. Hachanaad
  • K. Chamaridg
    • Summary


      The aim of this critical review was to discuss performance analysis characteristics and particular physiological demands related to karate kata and kumite.


      The intermittent nature of karate has been revealed via kumite's time-motion analysis, with a 1:1.5 effort-pause ratio during official competition. Karate combat is mainly dependent on the aerobic metabolism. However, decisive actions’ energy is provided by the anaerobic system. Concerning kata, it seems that the fraction of the energy supply is mainly a function of kata's duration. The high-energy phosphate seems to be the major contributors while the aerobic energy system’ participation rises with the increased kata's duration.

      Prospects and projects

      Future investigations in an ecologically valid environment are needed to support the findings presented in the current review.


      Irrespective of karate's discipline, the aerobic system represents the main energy system, especially in longer kataKumite appears to demand much higher metabolic power than kata, regardless of gender, while kata appears to require more ATP-PCr energy system contribution than kumite.



      Cette étude est une synthèse critique de la littérature concernant l’analyse de la performance en karaté et les réponses physiologiques suite au karaté kata et kumité.


      Les travaux traitant l’analyse des combats officiels ont montré que le karaté est un sport à caractère intermittent avec un rapport effort/récupération de 1:1.5. Le système oxydatif domine la synthèse énergétique durant le combat avec intervention de la filière anaérobie au cours des actions décisives. En ce qui concerne le kata, la fraction d’intervention des filières énergétiques est tributaire de la durée du kata. En effet, la part d’intervention du système des phosphagènes (ATP-PCr) prédomine avec une intervention de plus en plus importante de la filière aérobie qui va de paire avec l’augmentation de la durée du kata.

      Perspectives et projets

      Des études futures dans des conditions officielles de compétition (kata et/ou kumité) semblent être nécessaires pour confirmer les résultats actuels de la présente revue.


      Indépendamment de la spécialité (kata ou kumité), la filière aérobie semble être le premier responsable de la synthèse énergétique, particulièrement durant les kata de longue durée. La puissance métabolique durant le kumité semble être plus prononcée par rapport au kata indépendamment du sexe tandis que l’intervention du système ATP-PCr paraît être plus importante durant le kata par comparaison au kumité.


      • Karate kata
      • Karate kumite
      • Physiological responses
      • Time-motion analysis

      Mots clés

terça-feira, 14 de abril de 2015

Artigo na edição de abril do International Journal of Sports Nutrition and Exercise Metabolism

Weight Loss and Psychological-Related States in High-Level Judo Athletes

2015, 25, 110 – 118

Purpose: This study aimed at comparing weight loss methods (WLM) performed near competition by elite judo athletes from different age and gender groups and relating WLM with the prevalence of eating disorders. Methods: 144 athletes (66 females and 78 males) from the Spanish judo teams participated in this observational descriptive study grouped into cadets, juniors, and seniors. Data were collected during previous training meetings to international tournaments. The used tools are a basic data questionnaire, State-Trait Anxiety Inventory (STAI-T), Food Craving Questionnaire-Trait (FCQ-T), Restraint Scale (RS), and Eating Attitude Test (EAT- 40). Two-way ANOVAs and chi-square tests were used to compare groups. Results: Seniors presented higher use of WLM, especially one week before competition compared with juniors. Judoists were more involved in their diets and reduced more weight as they were older. Females were more concerned about their diets, presented higher anxiety, scored higher in the emotion scale, and more eating disorders symptoms, although weight loss was lower. Anxiety and eating disorders symptoms differences were more common in juniors and
cadets, respectively, with higher scores in females. Conclusions and Implications: Seniors seem to develop more effective strategies to cope with weight loss. Cadet and junior females are more likely to suffer from the psychological-related states associated to weight loss. Implications: (1) Educational programs might help competitors and coaches to adopt and promote healthier weight loss processes, (2) special attention should be paid to female young judoists to detect eating disorders in its early stages, and (3) judo organizations should consider implementing new rules to sanction harmful weight loss practices.
Keywords: weight reduction, eating disorders, psychological stress, combat sports, martial arts


segunda-feira, 23 de fevereiro de 2015

Diferenças nas respostas inflamatórias e metabólicas em exercício intermitente de alta intensidade

 2015 Feb 17. [Epub ahead of print]

Differences in metabolic and inflammatory responses in lower and upper body high-intensity intermittent exercise.



The purpose of this study was to compare the effect of upper and lower body high-intensity intermittent exercise (HIIE) on immunometabolism profile.


Seven male judo athletes completed two experimental sessions separated by at least 48 h. The athletes completed four bouts of the upper and lower body Wingate tests separated by 3-min recovery periods. The blood samples were collected at rest and immediately after the fourth bout of lower and upper body Wingate tests. Serum was analysed for IL-1ra (Interleukin-1 Receptor Antagonist), interleukins (IL-1) IL-2, IL-4, IL-6, IL-10, TNF-α (tumor necrosis factor alpha), cortisol, glucose, and NEFA (non-ester fatty acid). Peak power (maximum power attained during the 30 s test), mean power were calculated. In addition, after 1 and 2.5-min of each Wingate bout, blood samples from the ear lobe were collected for lactate analysis.


Our data demonstrated that lower body HIIE promoted a greater metabolic rate (values pre- vs. post-Wingate, for lactate: 1.02 ± 0.16 vs. 14.44 ± 1.08 mmol/L; for glucose: 112.5 ± 16.7 vs. 147.9 ± 23.5 mg/dL) and resulted in higher mechanical (mean power: 621 ± 46 vs. 427 ± 40 W, peak power: 794 ± 61 vs. 602 ± 109 W) performance compared to the upper body HIIE (lactate: 0.85 ± 0.18 vs. 12.69 ± 0.74 mmol/L; for glucose: 115.3 ± 20.4 vs. 123.7 ± 28.6 mg/dL; mean power: 480 ± 46 vs. 341 ± 45 W; and peak power: 672 ± 83 vs. 501 ± 120 W), but NEFA showed a similar response to both conditions, with increased IL-10 levels.


In conclusion, our results demonstrated that despite the higher performance in lower body HIIE, the inflammatory response did not differ between exercise modalities.