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AIM: To evaluate gastric motility using electrical bio-impedance (EBI) and gastric changes as a result of stress induced by psychological tests. METHODS: A group of 57 healthy women, aged 40-60 years, was recruited, and a clinical history and physical examination were performed. The women were free from severe anxiety, chronic or acute stress, severe depression, mental diseases and conditions that affect gastric activity. The women were evaluated under fasting conditions, and using a four-electrode configuration, the gastric signals were obtained through a BIOPAC MP-150 system. The volunteers were evaluated using the following paradigm: basal state, recording during the Stroop Test, intermediate resting period, recording during the Raven Test, and a final resting period. We analyzed the relative areas of the frequency spectrum: A1 (1-2 cpm), A2 (2-4 cpm), A3 (4-8 cpm), and A4 (8-12 cpm), as well as the median of area A2 + A3. The data were analyzed by an autoregressive method using a Butterworth filter with MatLab and Origin. Analysis of variance (ANOVA) and Friedman ANOVA (for nonparametric variables) were performed; in addition, pairs of groups were compared using the T dependent and Wilcoxon T tests. RESULTS: The results of the main values of area A2 were not significantly different comparing the five steps of the experimental paradigm. Nevertheless, there was a tendency of this A2 region to decrease during the stress tests, with recuperation at the final resting step. When an extended gastric region was considered (1-4 cpm), significant differences with the psychological stress tests were present (F = 3.85, P = 0.005). The A3 region also showed significant changes when the stress psychological tests were administered (F = 7.25, P < 0.001). These differences were influenced by the changes in the adjacent gastric region of A2. The parameter that we proposed in previous studies for the evaluation of gastric motility by electrical bio-impedance (EBI) was the median of the area under the region from 2 to 8 cpm (A2 + A3). The mean values of these frequencies (median of the A2 + A3 area) with the stress test showed significant changes (F = 5.5, P < 0.001). The results of the Wilcoxon T test for the A4 area parameter, which is influenced by the breathing response, changed significantly during the Raven stress test (P < 0.05). CONCLUSION: We confirm that the gastric response to acute psychological stress can be evaluated by short-term EBI.

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Este artículo se originó en la investigación "Justificaciones morales de las prácticas políticas de una mujer víctima de violencia política", que pretendió dar cuenta de los sentidos y propósitos de tipo moral que motivaron las prácticas políticas y ciudadanas de una líder comunitaria de una zona de alta conflictividad de Colombia. Se trató de una investigación cualitativa basada en un diseño narrativo-biográfico. Los resultados de esta investigación permitieron concluir que para ella, su acción política deriva su significado de un sentido de lo público y de la construcción del bien común, así como de la exigencia y garantía de derechos a todos los ciudadanos; de un sentido de lo justo y lo digno para todos, y de un sentido de protección y de sacrificio personal por el beneficio de la comunidad.

This paper gives a partial account of the research project entitled: "Moral justifications for the political action of a female victim of political violence". This research project had as its main objective to explain the moral meaning and purposes that motivated the political action and civic practices of a community leader in a highly conflictive region of Colombia. A qualitative research design based on biographical narrative was used. Results indicate that her political activity derives its meaning from a sense of public action and from the construction of the common good, as well as from a search for guaranteeing the civil rights to all citizens. It also derived from a sense of what is considered just to all and a guarantee to their individual dignity, and from her sense of protection and personal sacrifice for the community's benefit.

Este artigo teve origem na pesquisa Justificações morais para a prática política de uma mulher vítima de violência política, que tentou explicar os significados e os efeitos morais que motivaram as práticas cívicas e políticas de uma líder comunitária em uma área de muito conflito na Colômbia. Este estudo qualitativo baseou-se em uma narrativa biográfica. Os resultados desta pesquisa levaram à conclusão de que "para ela" a ação política deriva o seu significado de um sentimento do público e da construção do bem comum; das demandas e dos direitos garantidos a todos os cidadãos; de um sentimento do justo e decente para todos; e de um sentido de proteção e de sacrifício pessoal em benefício da comunidade.

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