Loading...
6 results
Search Results
Now showing 1 - 6 of 6
- Exploratory study on maturation and competition level in young karate practitionersPublication . Branco, Marco A. C.; Brito, Antonio Vences; Seabra, Ana Paula; Mercê, Cristiana; Rodrigues Ferreira, Mário André; Milheiro, Vitor; Catela, DavidEmparelhar crianças propicia sucesso e reduz lesões no desporto. Apesar das diferenças de maturação entre crianças, a idade cronológica mantém-se o principal critério para equalizar os níveis de competição, mas com uma eficiência limitada. No entanto, no karaté, o peso também é considerado. Fomos verificar se existe associação entre a idade cronológica e os indicadores maturacionais e, encontrar modelos simples que permitam colocar em reflexão novas formas de avaliação da maturação. Foram recolhidos dados em 54 jovens praticantes de karaté (idade: 12,67 ± 2,49 anos; experiência: 4,99 ± 2,44 anos; altura: 150,45 ± 15,25cm; peso: 43,09 ± 14,17 kg, 20 raparigas). A idade correlacionou-se significativamente com auto-observação da maturação sexual (rho = 0,838; p < 0,01), e foi possível encontrar modelos de regressão simples que têm uma explicação moderada na maturação, apenas utilizando variáveis de medição simples, tal como a altura, o peso e o perímetro do braço. Estes resultados devem levar as entidades competentes a refletir acerca do modo de emparelhamento dos atletas nas competições de uma forma justa em termos de maturação.
- Karate training effect in balance control in children with developmental coordination disorderPublication . Mercê, Cristiana; Catela, David; Branco, Marco A. C.The developmental coordination disorder (DCD) is a motor disorder identified and recognized by the Diagnostic and Statistical Manual of Mental Disorders (DSM), which affects 6% of school-age children (Vaivre-Douret, 2014; Vaivre-Douret et al., 2011). DCD children reveal problems in their development of fine and/or global motor coordination, difficulty in the motor control and learning, and in the acquisition of new motor skills (Vaivre-Douret, 2014).These difficulties in motor control and learning are expressed in many ways, such as a delay in achieving motor milestones, clumsiness, poor balance, difficulties in writing and drawing (Chang & Yu, 2010), poor postural control (Geuze, 2005), and difficulties in space and temporal organization (Wilson & McKenzie, 1998). All of that affects the daily life of the children and, consequently, brings more problems and new difficulties such as academic delay or social isolation (Joshi et al., 2015; Vaivre-Douret, 2014) One of the most prevalent problems is the postural control deficit, affecting 73 to 87% of the DCD children (Macnab, Miller, & Polatajko, 2001). An early diagnosis accompanied by an early intervention may help to decrease the negative effects of DCD and provide a better life quality (Smits-Engelsman et al., 2013). The regular practice of martial arts such Karate and Taekwondo improve children motor skills, including postural control and balance abilities (Fong et al., 2014; Truszczyńska, Drzał-Grabiec, Snela, & Rachwal, 2015). These benefits are also present in children with DCD, recent studies revealed an improve in sensory organization and standing balance (Fong, Tsang, & Ng, 2012), and also an increase in isokinetic knee muscle strength at 180º and in static single-leg standing balance in DCD children undergo a 3 months of intensive taekwondo practice (Fong, Chung, Chow, Ma, & Tsang, 2013). Taking into account that one of the most prevalent problems in DCD children is the poor postural control, and that the intensive practice of taekwondo has proved to improve balance. We pretend to verify if regular and continuous karate practice also improve balance in DCD children.
- Metabolic and energetics characterization and gender comparison in prepubertal karate practitionersPublication . VencesBrito, António M.; Rodrigues-Ferreira, Mário A.; Milheiro, Vitor; Branco, Marco A. C.; Mercê, Cristiana; Seabra, Ana Paula; Catela, DavidThe number of children practicing karate is constantly increasing. It is necessary to provide correct information to the karate masters/coaches about this specific population, so they can properly develop karate training processes without causing any harm to practitioners but, on the contrary, contribute to the harmonious development of children and youths. This study was carried out with twenty-one prepubertal karate practitioners, male and female. They were analyzed on their maturational development, metabolic and energetic behavior in an incremental test until exhaustion. Only the energetic variables presented significant differences between gender, so it seems that the karate practice has a similar metabolic impact in the development of the prepubertal karate practitioners of both genders.
- The basic foundations of capoeira’ learning: preliminary evaluation of a formative programPublication . Barros, Nelson; Branco, Marco A. C.; Catela, DavidCapoeira is a simulated duel supported by the rhythmic of instrumentalists, with traditional musical instruments; evolving a constant synchrony with the other capoeirista. Nowadays, capoeira is passed on by traditional processes, according to the past experience and personal interpretations of the Mestre de capoeira (capoeira master/coach). The purpose of this pilot study was to present a preliminary evaluation of a program for learning the basic techniques, for capoeira teaching agents, respecting the cultural and historical values of capoeira’ identity; applied to 15 first-grade school children (Mage = 8.0 ± 1.2 years old), belonging to a non-governmental organization, with integrative social roles, and to a national sports club, all capoeira beginners; throughout 30 sessions (90 minutes each), over three months. Results revealed that a significant improvement occurred in the quality of execution of all the twelve selected capoeira techniques, with no significant differences between genders and institutional origin, sustaining the potential cultural and social affordances of capoeira. The practice in dupla (dyad), in the fundamental ginga ability, provided synchronization among children, from the first moment, in tune with one of the specificities of this body culture movements, with a proper rhythmic structure (reinforced by music), which are performed in pairs. This program should be tested in an enlarged sample, and in other learning contexts (e.g., schools, clubs), to test its applicability.
- Metabolic and energetics characterization and gender comparison in prepubertal karate practitionersPublication . VencesBrito, António M.; Rodrigues Ferreira, Mário André; Milheiro, Vitor; Branco, Marco A. C.; Mercê, Cristiana; Seabra, Ana Paula; Catela, DavidThe number of children practicing karate is constantly increasing. It is necessary to provide correct information to the karate masters/coaches about this specific population, so they can properly develop karate training processes without causing any harm to practitioners but, on the contrary, contribute to the harmonious development of children and youths. This study was carried out with twenty-one prepubertal karate practitioners, male and female. They were analyzed on their maturational development, metabolic and energetic behavior in an incremental test until exhaustion. Only the energetic variables presented significant differences between gender, so it seems that the karate practice has a similar metabolic impact in the development of the prepubertal karate practitioners of both genders
- Exploratory study on maturation and competition level in young karate practitionersPublication . Branco, Marco A. C.; VencesBrito, António M.; Seabra, Ana Paula; Mercê, Cristiana; Rodrigues Ferreira, Mário André; Milheiro, Vítor; Catela, DavidParing children improve the chance for success and reduce injury in sport. Despite the maturity differences between children, chronological age remains the main criterion to equalize competition levels, but with limited efficiency. However, in Karate, weight is also considered. We went to investigate the association between chronological age and maturational indicators and find simple models to put on reflection new ways to assess the maturity. Data were collected in 54 young Karate practitioners (age: 12.67 ± 2.49 years, experience: 4.99 ± 2.44 years, height: 150.45 ± 15.25 cm, weight: 43.09 ± 14, 17 kg, 20 girls). Age correlated significantly with self-observation of sexual maturation (rho = 0.838; p < 0.01), and it was possible to find simple regression models that have a moderate explanation in maturation, using only simple measurable variables such as the height, weight and arm circumference. These results should lead the competent entities to reflect on the way of pairing of the athletes in the competitions, in a fair way in terms of maturation.