Difusão de tecnologia no Centro Nacional de Pesquisa de Milho e Sorgo.

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Pesquisa-ação: fundamentos do planejamento e do diagnóstico em comunidades rurais.

O presente trabalho nasceu da necessidade de divulgar um aspecto operacional da metodologia da pesquisa-ação chamada de diagnóstico. O estudo tem sido realizado por uma equipe de pesquisadores, extensionistas e agricultores nos Estados da Bahia, Pernambuco e Paraíba através da Embrapa Mandioca e Fruticultura, EMATER-PB, EBDA, EMATER-PE. No Brasil, as comunidades, municípios e regiões apresentam-se de forma diferenciada, com menor ou maior complexidade. Logo, para se intervir em determinada área para promover um processo de mudanças e necessário compreender primeiro sua realidade.bitstream/item/81305/1/Pesquisa-Acao-Jose-Cerqueira-Documentos-93-2000.pd

Maximal oxygen uptake is underestimated during incremental testing in hypertensive older adults: findings from the HAEL study

Purpose: The present cross-sectional study aimed to investigate whether a maximal oxygen uptake (VO2max) verification phase (VER) could improve the accuracy of a previous graded exercise test (GXT) to assess individual VO2max in hypertensive individuals. Methods: Thirtythree older adults with hypertension (24 women) taking part in the Hypertension Approaches in the Elderly Study (NCT03264443) were recruited. Briefly, after performing a treadmill GXT to exhaustion, participants rested for 10 min and underwent a multistage VER to confirm GXT results. Individual VO2max, respiratory exchange ratio (RER), maximal heart rate (HRmax), and rating of perceived exertion (RPE) were measured during both GXT and VER tests. Mean values were compared between bouts using paired sample t-tests and VO2max was also compared between GXT and VER on an individual basis. Results: Testing was well tolerated by all participants. Both absolute (p=0.011) and relative (p=0.014) VO2max values were higher in VER than in GXT. RER (p<0.001) and RPE (p=0.002) were lower in VER, whereas HRmax (p=0.286) was not different between the two trials. Individual VO2max comparisons revealed that 54.6% of the participants (18/33) achieved a VO2max value that was ≥3% during VER (mean: 13.5%, range: from +3% to +22.1%, ES=0.062), whereas 87.9% (29/33) of the tests would have been validated as a maximal effort if the classic criteria were employed (i.e. VO2 plateau or at least two secondary criteria). Conclusion: In sedentary older individuals with hypertension, GXT to exhaustion underestimated VO2max in more than half of tested participants, even when established but criticized criteria were used to confirm whether a maximal effort was attained. Employing VER after GXT is a quick approach to assist with the verification of an individual’s VO2max

Classificadora de sementes de milho.

bitstream/item/35742/1/Classificadora-sementes.pdfPatente requerida no INPI - n° PI-9104916

Exercise intervention does not reduce the likelihood of VO2max underestimation in older adults with hypertension

The present study aimed to investigate whether training status would influence the capacity of a verification phase (VER) to confirm maximal oxygen uptake (VO2max) of a previous graded exercise test (GXT) in individuals with hypertension. Twelve older adults with hypertension (8 women) were recruited. Using a within-subject design, participants performed a treadmill GXT to exhaustion followed by a multistage VER both before and after a 12-wkcombined exercise training programme. Individual VO2max, respiratory exchange ratio (RER), maximal heart rate (HRmax), and rating of perceived exertion (RPE) were measured during both GXT and VER tests. Absolute and relative VO2max values were higher in VER than in GXT at baseline, but only absolute VO2max differed between bouts post-intervention (all p < 0.05). Individual VO2max comparisons revealed that 75% of the participants (9/12) achieved a VO2max value that was ≥3% during VER both before (range: +4.9% to +21%) and after the intervention (range: +3.4% to +18.8%), whereas 91.7% (11/12) of the tests would have been validated as a maximal effort if the classic criteria were employed. A 12-wk combined training intervention could not improve the capacity of older adults with hypertension to achieve VO2max during a GXT, as assessed by VER

Novos espaços de participação social no contexto do desenvolvimento sustentável: as contribuições da Educomunicação

Este artigo analisa a contribuição da Educomunicação nos processos de incentivo à participação social em questões socioambientais. O texto apresenta os principais desafios da participação social no contexto do Desenvolvimento Sustentável e analisa as propostas da Educomunicação para a mobilização de indivíduos e coletivos por meio da promoção de relações mais homogêneas de poder; aumento do potencial de expressão; motivação para participação; e formulação de novos espaços de participação. As propostas teóricas são ilustradas com a análise de projetos educomunicativos aplicados no Brasil. Conclui-se que a Educomunicação tem potencial de agregar alternativas significativas aos desafios da participação, principalmente nas dimensões da ampliação da expressão criativa e do fomento de novos espaços de participação.<br>Este artículo analiza la contribución de los procesos de Educomunicación para fomentar la participación social en cuestiones ambientales. El texto presenta los principales desafíos de la participación social en el contexto del desarrollo sostenible y examina las propuestas de la Educomunicación para movilizar individuos y grupos para la participación social, por el intermedio de la promoción de relaciones más homogéneas de poder, el aumento del potencial de expresión, la motivación para la participación y la formulación de nuevos espacios de participación. Las propuestas teóricas se ilustran con el análisis de proyectos educomunicativos aplicados en Brasil. Se concluye que la Educomunicación tiene potencial para añadir aportes importantes a los retos de la participación, especialmente en las dimensiones de la ampliación de la expresión creativa y de la creación de nuevos espacios de participación.<br>This article analyses the contribution of Educommunication to encourage social participation in environmental issues. The text presents the major challenges of social participation in the context of sustainable development and examines the proposals of Educommunication to mobilize individuals and groups to social participation by promoting homogeneous relations of power, increasing the potential of expression; motivating participation, and formulating new spaces for participation. The theoretical proposals are illustrated with the analysis of projects applied in Brazil. It is concluded that Educommunication has significant potential in promoting alternatives to the challenges of participation, particularly in the dimensions of the amplification of creative expression and the creation of new spaces for participation