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.

http://journals.lww.com/nsca-jscr/Abstract/2015/07000/Brazilian_Jiu_Jitsu_Simulated_Competition_Part_II_.31.aspx

Trabalho com atletas da seleção brasileira de boxe

STRENGTH AND POWER QUALITIES ARE HIGHLY ASSOCIATED WITH PUNCHING IMPACT IN ELITE AMATEUR BOXERS.

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

Abstract

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.

http://journals.lww.com/nsca-jscr/Abstract/publishahead/STRENGTH_AND_POWER_QUALITIES_ARE_HIGHLY_ASSOCIATED.96848.aspx

hahahahahahaha

http://globoesporte.globo.com/taekwondo/noticia/2015/06/cbtkd-diz-que-anderson-silva-sumiu-e-cobra-seriedade-nao-e-brincadeira.html

Novo livro sobre Taekwondo

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Três artigos sobre MECs na edição de junho do JSCR

http://journals.lww.com/nsca-jscr/Abstract/2015/06000/Perceived_Training_Intensity_and_Performance.15.aspx

http://journals.lww.com/nsca-jscr/Abstract/2015/06000/Optimal_Load_for_the_Peak_Power_and_Maximal.21.aspx

http://journals.lww.com/nsca-jscr/Abstract/2015/06000/Can_Different_Conditioning_Activities_and_Rest.25.aspx

PPA no taekwondo

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J Strength Cond Res. 2015 Jun;29(6):1640-1647.

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

da Silva Santos JF1, Valenzuela TH, Franchini E.

Author information

Abstract

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.

http://www.ncbi.nlm.nih.gov/pubmed/26010798

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

10.1007/s11332-015-0220-6

Original Article

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

Juliano Schwartz1, 2, Monica Y. Takito3, Fabrício B. Del Vecchio1, 4, Leandro S. Antonietti2 andEmerson Franchini1  

(1)

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

(2)

Graduate Exercise Physiology Course, University of São Paulo, São Paulo, Brazil

(3)

School of Physical Education and Sport, University of São Paulo, São Paulo, Brazil

(4)

Superior School of Physical Education, Federal University of Pelotas, Pelotas, Brazil

 

 

Emerson Franchini

Email: emersonfranchini@hotmail.com

Received: 6 March 2015Accepted: 4 May 2015Published online: 16 May 2015

Abstract

Purpose

To evaluate health-related physical fitness in martial arts and combat sports practitioners.

Methods

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.

Results

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.

Conclusion

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.

Keywords

 Oxygen consumption Muscle strength Flexibility Body composition

http://link.springer.com/article/10.1007/s11332-015-0220-6/fulltext.html