ResumoDupla-tarefa, ou tarefas simultâneas, envolve a execução de uma tarefa primária, que é o foco principal de atenção, e uma tarefa secundária, executada ao mesmo tempo. Portadores da doença de Parkinson apresentam uma deterioração na marcha quando performances de dupla-tarefa são requeridas. Sendo assim, o objetivo desta pesquisa foi realizar uma revisão sistemática de ensaios clínicos aleatorizados do efeito da intervenção da duplatarefa na marcha em portadores da doença de Parkinson. Foi realizada uma busca, por ensaios clínicos aleatórios, nas bases de dados MEDLINE, LILACS, SciELO, Cochrane e PEDro. Dois revisores extraíram os dados de forma independente e a qualidade metodológica foi avaliada utilizando-se a escala PEDro. Foram selecionados dois artigos, que abrangeram 175 participantes. Foi demonstrado que o treino com marcadores externos e com a música, que são formas de se treinar a dupla-tarefa, apresentou durante a marcha melhora na performance da marcha. Entretanto, são necessários ainda muitos estudos do tipo ensaios clínicos aleatorizados para verificar, principalmente, os efeitos da intervenção com a dupla-tarefa na marcha em portadores da doença de Parkinson. AbstractThe dual or concurrent task involves performing a primary task, which is the main focus of attention, and a secondary task, performed at the same time. Parkinson's disease show deterioration in gait performance when dual tasks are required. Therefore, this research aimed to perform a systematic review of randomized clinical trials on the effect of dual task intervention on gait in Parkinson's disease. A search for randomized clinical trials was carried out in MEDLINE, LILACS, SciELO, Cochrane and PEDro. Two reviewers extracted data independently and methodological quality was assessed using the PEDro scale. Two articles were selected, covering 175 participants. It was been shown that training with external cues and music, which are ways to train the dual task during walking, improved gait performance. However, many studies of the randomized clinical trials type are still required, so as to see, especially, the effects of dual task interventions on gait in patients with Parkinson's disease.
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