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Efeito do alongamento estático na proprioceção do ombro: estudo randomizado controlado
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Abstract(s)
Objetivo: investigar se o alongamento estático (AE) tem efeitos agudos no senso de posição articular (SPA) da articulação do ombro. Metodologia: este estudo randomizado controlado apresentou um design em crossover, e englobou 17 praticantes de modalidades desportivas que envolviam o complexo articular do ombro (9 do sexo masculino e 8 do sexo feminino). Todos realizaram as 3 condições do estudo: controlo (repouso de 5 minutos), e AE de 30 ou 90 segundos de músculos em redor do ombro. O SPA foi avaliado antes e imediatamente após as condições, e testado por reposicionamento ativo para a amplitude de 110º de flexão, através de um sistema de câmara de vídeo, tendo sido estimado através dos erros angulares absolutos, relativos e variáveis. Resultados: apenas se verificou um aumento significativo nos erros angulares absolutos na condição de AE de 30 segundos entre a avaliação inicial e após a realização do AE (p=0.015). Conclusão: o AE tem efeitos agudos no SPA do ombro, aparentando ser prejudicial quando realizado por 30s, enquanto que parece ser inócuo quando realizado por 90s em cada músculo.
Purpose: to investigate whether static stretching (SS) has acute effects on joint position sense (JPS) of the shoulder joint. Methodology: this randomized controlled trial had a crossover design and included 17 practitioners of sports involving the shoulder joint complex (9 males and 8 females). All of them performed the 3 study conditions: control (5 minutes rest), and SS of 30 or 90 seconds of muscles around the shoulder. The JPS was assessed before and immediately after the conditions, and tested by active repositioning for the range of 110º of flexion, through a video camera system, being estimated through the absolute, relative and variable angular errors. Results: there was only a significant increase in the absolute angular errors in the condition of SS of 30s between the initial assessment and after the SS (p=0.015). Conclusion: SS seems to have acute effects on the shoulder JPS, appearing to be harmful when performed for 30s, but innocuous when performed for 90s on each muscle.
Purpose: to investigate whether static stretching (SS) has acute effects on joint position sense (JPS) of the shoulder joint. Methodology: this randomized controlled trial had a crossover design and included 17 practitioners of sports involving the shoulder joint complex (9 males and 8 females). All of them performed the 3 study conditions: control (5 minutes rest), and SS of 30 or 90 seconds of muscles around the shoulder. The JPS was assessed before and immediately after the conditions, and tested by active repositioning for the range of 110º of flexion, through a video camera system, being estimated through the absolute, relative and variable angular errors. Results: there was only a significant increase in the absolute angular errors in the condition of SS of 30s between the initial assessment and after the SS (p=0.015). Conclusion: SS seems to have acute effects on the shoulder JPS, appearing to be harmful when performed for 30s, but innocuous when performed for 90s on each muscle.
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Keywords
Alongamento estático Senso de posição articular Proprioceção Ombro Static stretching Joint position sense Proprioception Shoulder