Para inspirar aqueles que querem fazer pesquisa (to inspire those who want to do research) : )

http://www.youtube.com/watch?v=Fl4L4M8m4d0&feature=player_embedded

Dica do Paulo Panisi

Mais um artigo sobre suplementação e processo antioxidante no judô

Eur J Appl Physiol. 2011 Jan 11. [Epub ahead of print]


Effects of 6 weeks of n-3 fatty acids and antioxidant mixture on lipid peroxidation at rest and postexercise.

Filaire E, Massart A, Rouveix M, Portier H, Rosado F, Durand D.

Laboratoire CTI Inserm 658, UFRSTAPS, 2 allée du Château, BP 6237, 45062, Orléans Cedex, France, edith.filaire@univ-orleans.fr.

Abstract

The purpose of this randomized study was to measure the influence of 6 weeks of LCPUFA (600 mg EPA and 400 mg DHA per day) supplementation alone or in association with 30 mg vitamin E, 60 mg vitamin C and 6 mg β-carotene on resting and exercise-induced lipid peroxidation in judoists (n = 36). Blood samples were collected at rest before (T (1)) and after the supplementation period, in preexercise (T (2)) and postexercise (T (3)) conditions, for analysis of α-tocopherol, retinol, lag phase (Lp) before free radical-induced oxidation, maximum rate of oxidation (R (max)) during the propagating chain reaction, maximum amount of conjugated dienes (CD(max)) accumulated after the propagation phase, and nitric oxide, malondialdehyde and lipoperoxide (POOL) concentrations. Dietary data were collected using a 7-day diet record. There were no significant differences among treatment groups with respect to habitual intakes of energy from fat, carbohydrate, or protein. At T (1), there were no significant differences among treatment groups with respect to lipid peroxidation, lag phase, and levels of α-tocopherol or retinol. The consumption of an n-3 LC PUFA supplement increased oxidative stress at rest and did not attenuate the exercise-induced oxidative stress. The addition of antioxidants did not prevent the formation of oxidation products at rest. On the contrary, it seems that the combination of antioxidants added to the n-3 LCPUFA supplement led to a decrease in, CD(max), R (max), and POOL and MDA concentrations after a judo training session.

Artigo acadêmico com discussão sobre a proibição do mma no Canadá

http://www.cma.ca/multimedia/staticContent/HTML/N0/l2/cjs/vol-54/issue-1/pdf/pgE1.pdf

Fim das equipes competitivas de judô

Em menos de um mês, três equipes de judô "fecharam as portas": GR Barueri, AD São Caetano e FTC. Algo realmente preocupante, considerando que estamos a um ano e meio dos Jogos Olímpicos e a dois e meio de um Campeonato Mundial em SP. Duas delas eram de prefeituras na região metropolitana de SP e possuíam atletas na seleção brasileira ou na seletiva que acontecerá neste final de semana. Adicionalmente, essas três equipes disputaram o GP Nacional, sendo que uma foi campeã e a outra quarto lugar.
Será esse o legado dos megaeventos no país? Para refletir...

Perfil fisiológico de atletas de judô de elite

Sports Med. 2011 Feb 1;41(2):147-66. doi: 10.2165/11538580-000000000-00000.
Physiological profiles of elite judo athletes.
Franchini E, Del Vecchio FB, Matsushigue KA, Artioli GG.
Martial Arts and Combat Sports Research Group, School of Physical Education and Sport, University of So Paulo, So Paulo, Brazil.

Abstract

To be successful in international competitions, judo athletes must achieve an excellent level of physical fitness and physical condition during training. This article reviews the physiological profiles of elite judo athletes from different sex, age and weight categories. Body fat is generally low for these athletes, except for the heavyweight competitors. In general, elite judo athletes presented higher upper body anaerobic power and capacity than non-elite athletes. Lower body dynamic strength seems to provide a distinction between elite and recreational judo players, but not high-level judo players competing for a spot on national teams. Even maximal isometric strength is not a discriminant variable among judo players. However, more studies focusing on isometric strength endurance are warranted. Although aerobic power and capacity are considered relevant to judo performance, the available data do not present differences among judo athletes from different competitive levels. Typical maximal oxygen uptake values are around 50-55 mL/kg/min for male and 40-45 mL/kg/min for female judo athletes. As for other variables, heavyweight competitors presented lower aerobic power values. The typical differences commonly observed between males and females in the general population are also seen in judo athletes when analysing anaerobic power and capacity, aerobic power, and maximal strength and power. However, further research is needed concerning the differences among the seven weight categories in which judo athletes compete.

Respostas físicas à luta de TKD

Vamos combinar que preensão manual no TKD não é muito relevante, mas a PPA resultante da luta é interessante.

J Strength Cond Res. 2011 Jan 12. [Epub ahead of print]

Effects of Official Taekwondo Competitions on All-Out Performances of Elite Athletes.
Chiodo S, Tessitore A, Cortis C, Lupo C, Ammendolia A, Iona T, Capranica L.
1Experimental and Clinical Medicine Department, University of Magna Graecia, Catanzaro, Italy; 2Italian Taekwondo Federation, Rome, Italy; and 3Department of Human Movement and Sport Sciences, University of Rome Foro Italico, Rome, Italy.

Abstract
Chiodo, S, Tessitore, A, Cortis, C, Lupo, C, Ammendolia, A, Iona, T, and Capranica, L. Effects of official Taekwondo competitions on all-out performances of elite athletes. J Strength Cond Res 25(x): 000-000, 2011-This study investigated physiological and performance aspects of 15 (4 women and 11 men) elite Taekwondo athletes (24.0 ± 5.7 years) during their National Championship. The load of the competition was evaluated by means of heart rate (HR) and blood lactate (La). Pre and postmatch countermovement jump (CMJ), and handgrip performances were compared (p < 0.05). The match imposed a high load (HR > 85% of individual HRmax = 92 ± 12%; La = 6.7 ± 2.5 mmol·L) on athletes. After the match, better (p < 0.0001) CMJ (men: 43.9 ± 5.2 cm; women: 30.8 ± 2.3 cm) and worst (p = 0.006) handgrip performances (men: 459 ± 87 N; women: 337 ± 70 N) were found with respect to prematch ones (CMJ: men = 40.8 ± 4.9 cm, women = 28.2 ± 2.5 cm; handgrip: men = 486 ± 88 N, women: 337 ± 70 N). Results indicate that the intermittent activity of the Taekwondo competition elicits a high neuromuscular activation of the lower limbs. Instead, the decreases in grip strength could be because of the repeated concussions on the upper limbs used to protect from the opponent's kicks and punches directed toward the scoring area of the torso. Practically, these results urge coaches to structure training sessions that enable athletes to maintain their upper limb strength during their match.

Treino de TKD e organização postural

Eur J Appl Physiol. 2011 Jan 11. [Epub ahead of print]

Low-level Taekwondo practitioners have better somatosensory organisation in standing balance than sedentary people.
Leong HT, Fu SN, Ng GY, Tsang WW.
Department of Rehabilitation Sciences, Hong Kong Polytechnic University, Hung Hom, Hong Kong (SAR), China.
Abstract

Sports training, especially for those requiring fast and skilled movements have been reported to improve one's postural control, but the underlying sensory integration mechanism is unknown. The purpose is to explore the sensory organisation strategies for maintaining standing balance in Taekwondo practitioners, and to examine the quasi-static and dynamic balance performance in subjects with and without TKD training. Case-control study was used as a study design. Eleven subjects with low level of Taekwondo training for 1-3 years, and eleven sedentary healthy subjects were assessed with the sensory organisation tests (SOT) under six visual and somatosensory input conditions and their balance upon landing from self- or operator-triggered drop test with the eyes closed condition. The SOT measured the equilibrium scores, whereas the drop test assessed the time to stabilisation (TTS), normalised peak force and distance of antero-posterior and medial-lateral centre of pressure on landing. Results for the SOT test revealed that Taekwondo subjects performed better during stance with eyes closed on a fixed support than the untrained group (p = 0.011). For the drop tests, the untrained group was slower in postural correction as revealed by the longer TTS than the Taekwondo group after the operator-triggered drops (p = 0.018). All subjects had a larger normalised peak force in operator-triggered than self-triggered drops. In conclusion, we observed that people with low-level Taekwondo training have better balance performance than untrained subjects as shown in the SOT results and shorter TTS with the drop test. They may rely more on the somatosensory and vestibular inputs for maintaining balance. People with balance problems may benefit from Taekwondo training.