At the high saddle position it could be inferred that the ankle joint compensated for the reduced knee-joint work contribution, which was probably effective for minimizing soft-tissue damage in the knee joint (eg, anterior cruciate ligament and patellofemoral cartilage). The increase in ankle work contribution and changes in joint kinematics associated with changes in pedaling cadence have been suggested to indicate poor pedaling-movement skill.

Dietary phytochemical supplementation may improve muscle recovery from exercise. In this study, we investigated the effect of mate tea (MT) consumption -a phenol-rich beverage -on muscle strength and oxidative stress biomarkers after eccentric exercise. In a randomised, crossover design, twelve men were assigned to drink either MT or water (control; CON) for 11 d. On the 8th day, subjects performed three sets of twenty maximal eccentric elbow flexion exercises. Maximal isometric elbow flexion force was measured before and at 0, 24, 48 and 72 h after exercise. Blood samples were obtained before and at 24, 48 and 72 h after exercise and analysed for total phenolics, GSH, GSSG, GSH:GSSG ratio and lipid hydroperoxides (LOOH). After eccentric exercise, muscle strength was significantly reduced over time, regardless of treatments. However, MT improved the rate of strength recovery by 8·6 % on the 1st day after exercise (P < 0·05). Plasma concentration of total phenolic compounds was higher in MT than in CON at all time points (P < 0·05) but decreased significantly at 72 h after exercise in both trials (P < 0·05). Blood levels of GSH were significantly decreased at 48 and 72 h after exercise in CON (P < 0·05) but did not change over time in MT. No significant changes were observed for GSSG, GSH:GSSG ratio and LOOH levels. MT intake did not influence muscle strength at all time points assessed but hastened the strength recovery over 24 h after exercise. MT also favoured the concentration of blood antioxidant compounds.

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Com o objetivo de analisar a incidência de lesões e desvios posturais no taekwondo foram avaliados 10 atletas do sexo masculino da seleção catarinense. O histórico de lesões relacionadas à prática desta modalidade foi obtido por aplicação de questionário. A postura foi analisada por meio do protocolo do software SAPO. Os resultados indicaram lesões mais frequentes nos membros inferiores (7/10), principalmente no pé, por fratura e entorse. Houve diferença significativa entre os hemicorpos no ângulo Q (p = 0,037), ângulo perna/retropé (p = 0,001), alinhamento horizontal da pelve (p = 0,016) e comprimento entre membros (p = 0,02). Sugere-se a implementação de treinamento preventivo e exercícios compensatórios para prevenir lesões e desvios posturais em atletas de taekwondo.

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