OBJECTIVES:The aim of this study was to identify variations in nervous thresholds in different phases of the menstrual cycle in eumenorrheic women and users of oral contraceptives.METHOD:An observational study was performed including 56 volunteers, consisting of 30 eumenorrheic women who were non-users of oral contraceptives and 26 users of oral contraceptives. An electrical stimulator was employed to assess their nervous thresholds, with pulses applied at a fixed frequency of 2,500 Hz, modulated at 50 Hz, with phase variances of 20 μs, 50 μs and 100 μs. Sensitivity, motor and pain thresholds were evaluated during five menstrual cycle phases: phase 1 - menstrual, phase 2 - follicular, phase 3 - ovulatory, phase 4 - luteal and phase 5 - premenstrual.RESULTS:The results indicated low sensitivity thresholds of 100 μs for non-users of oral contraceptives and 50 μs for oral contraceptive users in phase 5. Low motor thresholds of 20 μs, 50 μs and 100 μs were observed for non-users of oral contraceptives in phase 5, while that of oral contraceptive users was 100 μs. Finally, a low pain threshold of 100 μs was observed in phase 5, but only in the oral contraceptive group.CONCLUSION:Nervous thresholds vary systematically across the phases of the menstrual cycle, with or without the use of oral contraceptives. These variations should be taken into account during research performed in women.
Este relato, de caráter exploratório, é resultado de um projeto interdisciplinar entre acadêmicos dos cursos de fisioterapia e ciência da computação e tem como objetivo promover o uso da Classificação Internacional de Funcionalidade, Incapacidade e Saúde (CIF), por meio de um software avaliativo denominado CIFisio. Este software atende à área de fisioterapia ortopédica e traumatológica funcionando como gerenciador dos dados dos usuários do serviço de saúde. O sistema foi criado para ser utilizado pelos acadêmicos para avaliação e tratamento fisioterapêutico, registro de condutas diárias, reavaliações e geração de relatórios estatísticos descritivos, de modo a auxiliar a elaboração dos modelos de gestão e decisão. Acredita-se que o resultado da pesquisa aqui apresentada contribuirá com o processo de informatização em saúde, com a qualidade da assistência prestada pelos fisioterapeutas e aperfeiçoamento das práticas pedagógicas utilizadas na formação profissional de acadêmicos na área de saúde.
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