Não se atire de cabeça

No Shinkei Geka. 2011 Dec;39(12):1139-47.


[Severe Head Injury during Judo Practice].

[Article in Japanese]

Nagahiro S, Mizobuchi Y, Hondo H, Kasuya H, Kamitani T, Shinbara Y, Nimura Y, Tomatsu T.

Department of Neurosurgery, Institute of Health Bioscience, The University of Tokushima Graduate School.

Abstract

The goal of this study is to elucidate the characteristic features of Judo head injuries and to propose safety measures and a reaction manual on how to prevent and to deal with such accidents in Japan. Thirty cases of severe head injuries suffered during Judo practice were enrolled in this study. They have made insurance claims for damage compensation and inquiries about Judo accidents attributed to the All Japan Judo Federation, from 2003 to 2010. The average age of the patients was 16.5 year old. The incidence of injury showed 2 peaks in different academic grade levels; one is in the first year of junior high-school (30.0%, n=9) and the other is in senior high school (26.7%, n=8). Around half of them were beginners. Four cases (13.3%) had past history of head trauma or headache and dizziness before a catastrophic accident, suggesting the presence of a second impact. Lucid interval was observed in 25 cases (83.3%). Most patients (93.3%) suffered acute subdural hematoma associated with avulsion of a cerebral bridging vein. Of patients who underwent emergency removal of the hematoma, 15 patients (50%) died and 7 patients (23.3%) entered a persistent vegetative state. Based on these findings, we propose an emergency manual with safety measures for effectively preventing and treating Judo head injuries in an appropriate manner. To reduce the disastrous head injuries in Judo, the safety measures and an optimal action manual should be reconsidered and widely spread and accepted by society.

Iliadis versus equipe

http://www.youtube.com/watch?v=gWMHb_YMqz8&feature=player_embedded

Treinamento de força da equipe britânica de judô

http://www.youtube.com/watch?v=U2fVLVClkwY&feature=player_embedded

Convenção tatame: material sobre preparação de atletas olímpicos

https://docs.google.com/open?id=0B6F18t_8Glc7MjhkMzZmNmItNmRkYS00ODE0LTlhMWUtOTdiMDc3NDI0ZWY5

Perfil antropométrico de judocas espanholes de diferentes faixas etárias

Anthropometrical profile of elite Spanish judoka: comparative analysis among ages

Emerson Franchini 1, Jesús F. Rodríguez-Huertas 2, Stanislaw Sterkowicz 3, Vicente Carratalá 4, Carlos Gutiérrez-García 5, Raquel Escobar-Molina 6

1 - School of Physical Education. Sport Martial Arts and Combat Sports Research Group. University of São Paulo, Brazil

2 - Faculty of Physical Education and Sport Sciences. Department of Physiology. University of Granada, Spain

3 - Department of Theory and Methodology of Combat Sports. University School of Physical Education in Krakow, Poland

4 - Faculty of Physical Education and Sport Sciences. Department of Physical Education and Sports. University of Valencia, Spain

5 - Faculty of Physical Education and Sport Sciences. Department of Physical Education and Sports. University of León, Spain

6 - Faculty of Physical Education and Sport Sciences. Department of Physical Education and Sports. University of Granada, Spain

Arch Budo 2011; 7(4):

Manuscript ID: 882107

Article type: Original article

Background and Study Aim: Judo athletes usually try to maximize muscle mass and to minimize adiposity in each weight category, but few studies focused on comparisons of different age categories and little is known about sexual dimorphism among judo athletes. The aim of the study was to compare anthropometrical variables in male and female judoka from Spanish National Teams.
Material and Methods: Eighty-seven national level Spanish judoka from all seven weight categories took part in this study: females (n = 46) – cadet (n = 16), junior (n = 12) and senior (n = 18); males (n = 44) – cadet (n = 18), junior (n = 15) and senior (n = 8). Body mass, height, skinfold thickness, circumferences and breadth anthropometric measurements were carried out. Somatotype components, body mass index, body fat and muscle mass were also estimated. A two way (gender and age groups) analysis of variance and Tukey test were used to compare groups.
Results: (1) males were heavier, taller, had lower body fat and higher muscle mass absolute and relative values, circumferences and bone diameters, lower endomorphic and higher mesomorphic components than females; (2) for skinfold thickness males presented lower values in limbs’ sites than females, but no difference was found in trunk skinfold thicknesses; (3) few differences were found among age categories, with cadets presenting smaller flexed arm circumference and humerus epicondyle bone breadth compared to junior and seniors, and lower absolute muscle mass compared to seniors; (4) tendency for reducing sexual dimorphism in some anthropological dimensions and in endomorphic and mesomorphic components was observed across age categories.
Conclusions: Morphologically high level cadet judo athletes are quite similar to older athletes and coaches can select them from these ages. These data can be used as reference to coaches and physical conditioning professionals.

Impacto imunológico de competição de TKD (dica do Fabrício)

Int J Sports Med. 2011 Nov 23. [Epub ahead of print]


Immunological Impact of Taekwondo Competitions.

Lee YW, Shin KW, Paik IY, Jung WM, Cho SY, Choi ST, Kim HD, Kim JY.

Department of Internal Medicine.

Abstract

Immunological changes in elite adolescent female athletes during Taekwondo competitions were investigated on-field. 6 female athletes (16.7±0.8 year-old) volunteered and performed 5 bouts of demonstration Taekwondo competitions simulating real tournaments in intensity, duration, and break-time intervals on the same day. Blood samples were taken before, after the competitions and during the recovery, respectively. Immunological changes and oxidative stress in peripheral blood mononuclear cells were evaluated by flow-cytometry. During the competitions, exercise intensity was 92.2±3.8% (86.1~95.7) of the maximal heart rate. Blood lactate increased immediately after the competitions (p=0.0165) and decreased to baseline during recovery. Intracellular reactive oxygen species (ROS) in the peripheral blood increased continuously during recovery (p<0.05, respectively). Natural killer cells increased immediately after the competitions (p=0.0006), and decreased during recovery. B and T cells increased immediately after the competitions and remained elevated throughout recovery (p<0.05, respectively). CD4/CD8 ratio after the competitions was decreased (p=0.0091) and returned to baseline during recovery. These results suggest that the immunological function of the elite female adolescent athletes could be attenuated after Taekwondo competitions. Further large-scaled Taekwondo studies on immunologic and apoptotic changes related to oxidative stress should be performed for improving and protecting the health of adolescent athletes.

Suplementação e recuperação de atletas de luta olímpica

J Int Soc Sports Nutr. 2011 Nov 22;8(1):21. [Epub ahead of print]


Effects of carbohydrate, branched-chain amino acids, and arginine in recovery period on the subsequent performance in wrestlers.

Jang TR, Wu CL, Chang CM, Hung W, Fang SH, Chang CK.

Abstract

ABSTRACT: Many athletes need to participate in multiple events in a single day. The efficient post-exercise glycogen recovery may be critical for the performance in subsequent exercise. This study examined whether post-exercise carbohydrate supplementation could restore the performance in the subsequent simulated wrestling match. The effect of branched-chain amino acids and arginine on glucose disposal and performance was also investigated. Nine well-trained male wrestlers participated in 3 trials in a random order. Each trial contained 3 matches with a 1-hr rest between match 1 and 2, and a 2-hr rest between match 2 and 3. Each match contained 3 exercise periods interspersed with 1-min rests. The subjects alternated 10-s all-out sprints and 20-s rests in each exercise period. At the end of match 2, 3 different supplementations were consumed: 1.2 g/kg glucose (CHO trial), 1 g/kg glucose + 0.1 g/kg Arg + 0.1 g/kg BCAA (CHO+AA trial), or water (placebo trial). The peak and average power in the 3 matches was similar in the 3 trials. After the supplementation, CHO and CHO+AA trial showed significantly higher glucose and insulin, and lower glycerol and non-esterified fatty acid concentrations than the placebo trial. There was no significant difference in these biochemical parameters between the CHO and CHO+AA trials. Supplementation of carbohydrate with or without BCAA and arginine during the post-match period had no effect on the performance in the following simulated match in wrestlers. In addition, BCAA and arginine did not provide additional insulinemic effect.