5 research outputs found

    Efectividad de las modificaciones de estilo de vida sobre el control de la presión arterial en pacientes hipertensos

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    Introducción: Las modificaciones del estilo de vida han demostrado ser eficaces para el control de la presión arterial (PA). El objetivo de este trabajo es evaluar el efecto de la reducción del consumo de sal en la PA en hipertensos, conocer la calidad de la dieta y comprobar la adherencia a las recomendaciones dietéticas y de actividad física.Material y métodos: Estudio cuasiexperimental no controlado. Se seleccionaron aleatoriamente sujetos hipertensos a los que se realizó una entrevista estructurada para conocer sus hábitos de alimentación, consumo de sal y actividad física. Se determinaron las variables antropométricas y la PA. Se entregaron por escrito recomendaciones dietéticas y de actividad física. A los 30 días se reevaluaron.Resultados: 30 sujetos (17 mujeres y 13 varones), edad media 65,3±12,1 años. El 73,3% refería realizar dieta baja en sal. La calidad de la dieta mostró que la mayoría de los sujetos necesitaban cambios en su alimentación y eran sedentarios. Índice de masa corporal de 28,3±4,8 Kg/m2. PA sistólica de 139,1±18,9 mmHg y diastólica 81,8±10,1 mmHg.Segunda visita sin cambios en calidad de la dieta ni en actividad física aunque sí disminución en consumo de sal (p=0,028). PA sistólica media de 133,3±16,2 mmHg y diastólica 77,8±11,2 mmHg (p=0,04 en sistólica y  p=0,01 en diastólica).Conclusiones: La disminución del consumo de sal se asoció de forma estadísticamente significativa a una reducción de las cifras de PA. La calidad de la dieta de la muestra fue subóptima y la adherencia a las recomendaciones de estilo de vida baja

    MAGIC and H.E.S.S. detect VHE gamma rays from the blazar OT081 for the first time: a deep multiwavelength study

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    https://pos.sissa.it/395/815/pdfPublished versio

    Multi-epoch monitoring of TXS 0506+056 with MAGIC and MWL partners

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    Intensity interferometry with the MAGIC telescopes

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    Due to their large mirror size, fast response to single photons, sensitivity and telescope baselines in the order of 100 m, Imaging Atmospheric Cherenkov Telescopes are ideally suited to perform intensity interferometry observations. In 2019 a test readout setup was installed in the two 17-m diameter MAGIC telescopes to allow performing interferometry measurements with them. The first on-sky measurements were able to detect correlated intensity fluctuations consistent with the stellar diameters of three different stars: Adhara (n CMa), Benetnasch ([ UMa) and Mirzam (V CMa). After the upgrade of the setup in 2021, MAGIC is now equipped with a high-duty-cycle intensity interferometer, already in operation. A technical description of the interferometer and first performance results obtained by measuring several known stellar diameter are presented

    Extreme blazars under the eyes of MAGIC

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    Extreme high-frequency-peaked BL Lac objects (EHBLs) are the most energetic persistent sources in the universe. This contribution reports on long-term observing campaigns of tens of EHBLs that have been organized by the MAGIC collaboration to enlarge their population at VHE and understand the origin of their extreme properties. EHBLs are characterized by a spectral energy distribution (SED) featuring a synchrotron peak energy above 1 keV. Several EHBLs display a hard spectral index at very high energies (VHE; E > 100 GeV), suggesting a gamma-ray SED component peaking significantly above 1 TeV. Such extreme properties are challenging current standard emission and acceleration mechanisms. Recent studies have also unveiled intriguing disparities in the temporal characteristics of EHBLs. Some sources seem to display a persistent EHBL behaviour, while others belong to the EHBL family only temporarily. Here, we present recent results of the first hard-TeV EHBL catalog. The MAGIC observations are accompanied by an extensive multiwavelength coverage to obtain an optimal determination of the SED. This allow us to investigate leptonic and hadronic scenarios for the emission. We also present the recent detection of the EHBL RX J0812.0+0237 in the VHE band by MAGIC. Finally, we discuss a broad multiwavelength campaign on the BL Lac type object 1ES 2344+514, which showed intermittent EHBL characteristics in August 2016
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