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This article aims to conceptually and methodologically analyse the use of Participatory Action Research (PAR), through field research, in order to increase knowledge about it, and to illustrate its strengths and weaknesses to encourage its use in Health Sciences. Within qualitative methodology, PAR can be used as a tool for the analysis of change and transformation, whose objective is the emancipation and liberation of people who find themselves in an oppressive social context. The assessment of this approach is based on field researc