Hypertension is the cause of about 7.5 million deaths per year, globally. More than 40% of African Americans are diagnosed with hypertension. The aim of this study was to examine the effects of walnut consumption on blood pressure in a small convenience sample of African Americans in Mississippi. Fifty subjects participated in the study. Blood pressure was measured once a week for three weeks prior to the initiation of the intervention for a baseline data of the subjects’ normal blood pressure. During the 6-week intervention, the participants consumed a package of walnuts, daily. Blood pressure was measured weekly. The results of the study indicate that there was no significant impact on systolic pressure (MD: 1.61; CI: -.979, 4.20; p=.217) or diastolic pressure (MD: .806; CI: -.905, 2.51; p=.349). Future studies should be performed with more participants, higher dose of walnuts, and a longer trial period.

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El presente trabajo de investigación pretende conocer las barreras que limitaron las exportaciones de Nueces del Brasil de Madre de Dios a través de la Carretera Interoceánica Sur durante el periodo 2015 - 2019. Con ese fin, a lo largo del presente estudio se planteó como objetivo principal, comprender la relevancia del acceso al crédito, la capacidad empresarial y la logística y operatividad aduanera como barreras limitantes a las exportaciones de Nueces del Brasil de Madre de Dios a través de la Carretera Interoceánica Sur durante el periodo 2015 -2019. Asimismo, se aplicó el diseño cualitativo fenomenológico con alcance explicativo y se realizó la búsqueda de información de fuentes secundarias, dentro de las cuales se encuentran los antecedentes. Luego, la realidad problemática, evidencia los motivos para profundizar acerca de las limitantes a las exportaciones de las castañas. Adicionalmente, se formularon los problemas, objetivos e hipótesis, los cuales darán respuesta a la pregunta de investigación. Respecto a la búsqueda de fuentes primarias, se realizaron entrevistas semiestructuradas dirigidas a los grupos de interés. Posteriormente, se utilizó el software Atlas.ti para el análisis de la información obtenida, la cual se contrastó con los antecedentes del marco teórico. Tras el análisis de la información, se logró comprender la relevancia de las barreras que limitan las exportaciones de Nueces del Brasil de Madre de Dios a través de la Carretera Interoceánica Sur. En ese sentido, la primera barrera corresponde al acceso al crédito, seguido de la logística y operatividad aduanera, y finalmente, la capacidad empresarial. / The present research work aims to know the barriers that limited the exports of Brazil Nuts from Madre de Dios through the South Interoceanic Highway during the period 2015 - 2019. To this end, throughout this study the main objective is to understand the relevance of access to credit, entrepreneurial capacity, logistics and customs operations as limiting barriers to exports of Brazil Nuts from Madre de Dios through the South Interoceanic Highway during the period 2015 - 2019. Likewise, the qualitative phenomenological design was applied with explanatory scope and a search was made for information from secondary sources, including the antecedents. Then, the problematic reality shows the reasons to delve into the limitations on chestnut exports. Additionally, the problems, objectives and hypotheses were formulated, which will give an answer to the research question. Regarding the search for primary sources, semi-structured interviews were conducted with interest groups. Subsequently, the Atlas.ti software was used for the analysis of the information obtained, which was contrasted with the background of the theoretical framework. After analyzing the information, it was possible to understand the relevance of the barriers that limit Brazil Nut exports from Madre de Dios through the South Interoceanic Highway. In this sense, the first barrier corresponds to access to credit, followed by logistics and customs operations, and finally, entrepreneurial capacity. / Tesis