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- 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.
- Injuries in Portuguese recreational surfersPublication . Castro, Maria António; Fernandes, Rodrigo; Rodrigues Ferreira, Mário André; Madail, João; Vences de Brito, AntónioBackground Surfing practice has been growing in recent years with an increasing number of recreational practitioners, especially in countries like Portugal with very good ocean conditions. Most studies consider all professional and recreational surfer injuries. Objective Determine the rate of injuries and their characteristics during the recreational surf practice. Design Retrospective cohort study. Setting Standardised data collected with a validated questionnaire. Patients 150 Portuguese surfers aged between 8 to 68 years practising during at least one of the two seasons in the study agreed to participate. Interventions Both gender recreational surfers. Main Outcome Measurements Retrospective assessment of the last 2 years injuries occurrence and conditions of occurrence. Results A total of 33 athletes sustained 45 injuries (22% injured players) with 9,72 injuries per 1000 h of exposure. The greatest number of injuries occurred in the lower leg (ankle 20%; knee 13%) followed by the shoulder (17.8%). The most common injury mechanism was collision/direct contact (59%) or torsion (11.4%) with the joints most affected (24.4%). Injuries more frequent were wound (17.8%), contusion (11%) and inflammation (11%). The surfboard (28.9%) and the athlete itself (24.4%) were the main cause of the injury, occurring mainly when performing manoeuvres (20.9%) especially descending the wave (16.3%). There are no statistically significant differences in injury frequency per 1000 h of exposure with regards to sex, surfer position (goofy or regular), surfing side (left, right or both). Male athletes demonstrate higher injury rates (women 7.94, SD 1.96; men 10.27, SD 2.89) per 1000 h of exposure. Conclusions Recreational surfers reveal a considerable injury frequency per 1000 h of exposure, independent of gender, surfer position or side. The greater incidence of lower-limb and shoulder injuries must be underlined, as well as the fact that collision/direct contact represents more than 50% of the injury mechanisms.
- The influence of sport practices on body composition, maturation and maximum oxygen uptake in children and youthPublication . Mercê, Cristiana; Branco, Marco A. C.; Rodrigues Ferreira, Mário André; VencesBrito, Antonio; Catela, David; Seabra, Ana Paula; Milheiro, Vítor; Cynarski, WojciechSystematic sport practice at younger ages positively influences body composition and maximum oxygen uptake (VO2max). On the other hand, its influence on maturation is still not consensual, and some studies claim a negative effect. Few studies have approached the differences in this influence according to different sport practices. The present study aims to analyse and compare the influence of karate and swimming practices, and the non-practice of sports, on body composition, VO2max and maturation in children and youth. Data were collected in 126 youth, 54 karate athletes, 36 swimming athletes and 36 participants with no sport practice (M=11.56±2.06 years). The type of sport practice had a different influence on body composition and VO2max, no negative influence was verified on maturation. In general, the sport practices revealed a positive influence in children and youth’s body composition. The karate practice provided significant lower body fat mass and higher lean mass in males. Swimming athletes revealed a significant higher VO2max compared to all other groups, while karate didn´t differed from no-practice group. The different influence of sport practices verified highlighted the importance of a multilateral development of children and youth by practising several sports.