Resumo

Distúrbios do equilíbrio consistem em um grande problema na doença de Parkinson (DP). A terapia por vibração do corpo inteiro mostra-se benéfica em pessoas saudáveis, mas apresenta eficácia incerta na DP. O objetivo desse estudo foi verificar os efeitos agudos da terapia por vibração do corpo inteiro sobre o equilíbrio de pacientes com DP e analisar o tamanho do efeito da intervenção para predizer o número ideal de participantes. Doze participantes com DP foram randomicamente divididos entre grupos intervenção e placebo. O grupo intervenção foi submetidos à terapia vibratória, tendo o equilíbrio avaliado em período anterior, imediatamente após e transcorrido cinco minutos da sessão. O grupo placebo fez uma intervenção simulada, tendo o equilíbrio avaliado nos mesmos períodos. Ambos os grupos tiveram seus olhos vendados para manter cegamento dos participantes sobre a intervenção. As variáveis analisadas foram deslocamento, área e velocidade de deslocamento. O tamanho do efeito foi verificado em análises univariadas e multivariadas, admitindo significância em 5%. Sobre os resultados, a terapia por vibração do corpo inteiro não apresentou eficácia sobre o equilíbrio na DP em momento imediato e transcorrido cinco minutos da aplicação da terapia. A análise que apresentou maior tamanho do efeito se deu quando o equilíbrio foi mensurado de forma multivariada, predizendo a necessidade de 46 pacientes. Em conclusão, os resultados desse estudo foram imprecisos quanto à eficácia da terapia por vibração do corpo inteiro no equilíbrio de pacientes com DP. Novas pesquisas com uma amostra superior a 46 participantes devem ser realizadas.

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