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Ordoñana Martín, Juan Ramón

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Ordoñana Martín, Juan Ramón
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Anatomía Humana y Psicobiología
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    Comunicaciones Orales.-Relación entre calidad de vida y edad, sexo, nivel de estudios, consumo de psicofármacos antidepresivos y tranquilizantes
    (2020-05-26) Aroca Martínez, Ana; González Javier, Francisca; Ordoñana Martín, Juan Ramón; Facultades, Departamentos, Servicios y Escuelas::Departamentos de la UMU::Anatomía Humana y Psicobiología
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    Incidence of anovulatory menstrual cycles among dysmenorrheic and non-dismenorrheic women: effects on symptomatology and mood
    (Colegio Oficial de Psicólogos del Principado de Asturias, 2010) Espín López, Laura; Carrillo Verdejo, María Eduvigis; González Javier, Francisca; Ordoñana Martín, Juan Ramón; Gómez Amor, Jesús; Anatomía Humana y Psicobiología; Facultades de la UMU::Facultad de Psicología y Logopedia
    Incidencia de ciclos menstruales anovulatorios entre mujeres dismenorreicas y no dismenorreicas: efectos sobre sintomatología y humor. La incidencia de ciclos menstruales anovulatorios espontáneos (SA) entre las mujeres dismenorreicas y no dismenorreicas y sus efectos sobre sintomatología y humor fueron examinados en 52 estudiantes universitarias distribuidas en dos grupos (18 dismenorreicas y 34 no-dismenorreicas) de acuerdo a la presencia o ausencia de síntomas de dismenorrea primaria. Las mujeres fueron evaluadas en las fases menstrual, ovulatoria y premenstrual. Para estimar la proporción de ciclos ovulatorios y SA se utilizó el método de la temperatura basal corporal (BBT). Los resultados indicaron que el porcentaje de ciclos SA encontrados en mujeres dismenorreicas no confirma que la dismenorrea primaria solo ocurra en ciclos ovulatorios. Además, los ciclos ovulatorios no presentaron mayor sintomatología que los ciclos anovulatorios en las medidas de autoinforme de afecto negativo. De hecho, la sintomatología menstrual no estuvo asociada con ciclos ovulatorios. Estos datos confirman que la dismenorrea primaria no solo depende de los factores endocrinos que regulan el ciclo menstrual, sino también de otros factores sociales o psicológicos.
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    Disparity between central and peripheral refraction inheritance in twins
    (Nature Research, 2021-06-09) Pusti, D.; Benito, A.; Artal, P.; Madrid Valero, Juan José; Ordoñana Martín, Juan Ramón; Física
    The last decades have witnessed a sudden increase in myopia incidence among youngsters that have been related to modern lifestyle along with the use of emerging technologies affecting visual exposure. Increasing exposures to known risk factors for myopia, such as time spent indoors, close-distance work, or low-light conditions are thought to be responsible for this public health issue. In most cases, development of myopia is secondary to a vitreous chamber enlargement, although the related mechanisms and the potential interaction between central and peripheral retinal area remain unclear. For a better understanding, we performed a classical twin study where objective refractive error along 70° of horizontal retinal arc was measured in 100 twin pairs of university students, 78% of which showed manifest myopia. We found the variance of shared environmental origin (range 0.34 to 0.67) explained most of the objective refractive error variance within central 42° of the retina (22° temporal to 19° nasal), whereas additive genetic variance (range 0.34 to 0.76) was predominant in the peripheral retinal areas measured. In this sample of millennial university students, with a large prevalence of myopia, environmental exposures were mostly responsible for inter-individual variation in the retinal horizontal area surrounding the macula, while their relative weight on phenotypic variance was gradually descending, and replaced by the variance of genetic origin, towards the retinal periphery.
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    Inheritance of Refractive Error in Millennials
    (Nature Research, 2020-05-18) Pusti, D.; Benito, A.; Artal, P.; Madrid Valero, Juan José; Ordoñana Martín, Juan Ramón; Física
    Over the last decades, the prevalence of myopia has suddenly increased, and at this rate, half of the world's population will be myopic by the year 2050. Contemporary behavioural and lifestyle circumstances, along with emergent technology, are thought to be responsible for this increase. Twin studies mostly reported a high heritability of refractive error across ethnicities. However, heritability is a population statistic and could vary as a result of changing environmental conditions. We studied the variance of refractive error in millennials with 100 twin pairs of university students in southeast Spain. The study population presented a high prevalence of myopia (77%). Statistical analysis showed the variance of refractive error in this group of young twins was mainly driven by the shared environment and, to a lesser extent, by additive genetic factors. We found an increase in myopia prevalence accompanied by a decrease in heritability in this sample of millennials in contrast with results from a previous generation group from the same ethnic origin.
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    Self-report and psychophysiological responses to fear appeals
    (Oxford University Press, 2009-03-18) Espín López, Laura; Ordoñana Martín, Juan Ramón; González Javier, Francisca; Gómez Amor, Jesús; Anatomía Humana y Psicobiología; Facultad de Psicologia
    This study was designed to assess the relationship between self-report and psychophysio- logical responses to fear appeals and behavioral changes elicited by these. Ninety-two subjects watched one of four messages that varied in level of threat (high vs. low) and efficacy (high vs. low). Concomitantly, psychophysiological measures (heart rate and skin conductance) were registered. Perceived threat and efficacy varied according to the characteristics of the message. High-threat messages elicited significantly different levels of autonomic arousal than low-threat messages. Following of behavioral recommenda- tion was higher among subjects who were exposed to the high threat / high efficacy stimulus, those who reported high perceived threat, and for those who showed an auto- nomic response pattern related to the facilitation of attentional processes.
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    Heritability of sleep quality in a middle-aged twin sample from Spain
    (2018) Gregory, Alice M.; Madrid Valero, Juan José; Martínez Selva, José María; Ordoñana Martín, Juan Ramón; Sánchez Romera, Juan Francisco; Anatomía Humana y Psicobiología
    Study objectives: Sleep quality is associated with health throughout the life span, which is particularly salient in middle-age and older adulthood. Sleep quality appears to be influenced by both genetic and environmental factors. However, there is still limited information about genetic influences on sleep quality in middle-aged adults, and particularly in those from certain geographical locations. We estimated the magnitude of genetic and environmental influences on sleep quality in a representative sample of middle-aged Spanish twins. Methods: The sample comprised 2150 individuals born between 1939 and 1966, who participate in the Murcia Twin Registry. In order to estimate the heritability of sleep quality variables we performed univariate analyses for the global score on the Pittsburgh sleep quality index and for each of its components. Results: We found moderate but significant heritability (34%) for sleep quality. The genetic variance of the components of the Pittsburgh index ranged from 30% to 45%, except for sleep efficiency for which no genetic influence could be detected. In summary, there was a moderate genetic influence on most dimensions of sleep quality in a sample of adult male and female twins. Shared environment influences were not found. Conclusions: This study adds new information regarding the underlying determinants of sleep quality by providing heritability estimates in a middle-aged population-based representative sample from a geographical location that has not been included in studies of this type previously. This could provide a reference point for future research regarding sleep research in middle-age.
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    Heritability of the timing of food intake.
    (2018-03-12) Lopez-Minguez, J; Dashti, HS; Madrid, JA; Saxena, R; Scheer, FAJL; Garaulet Aza, Marta; Madrid Valero, Juan José; Ordoñana Martín, Juan Ramón; Fisiología
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    Evolución de los partos múltiples en la Región de Murcia desde 1996 hasta 2008. Implicaciones psicosociales.
    (Murcia : Servicio de Publicaciones de la Universidad de Murcia, 2011) Tornero Gómez, M.J.; Colodro Conde, L.; Ordoñana Martín, Juan Ramón; Sánchez Romera, Juan Francisco
    Los partos múltiples conllevan una serie de implicaciones psicosociales que afectan tanto a los padres como a los sistemas de atención sanitaria y social. La posibilidad de que se produzcan complicaciones se incrementa en el caso de un embarazo múltiple, así como las necesidades de atención y cuidados tanto para los bebés como para los padres. Disponer de información acerca de la evolución de este tipo de embarazos resulta, por tanto, de gran relevancia para identificar necesidades de salud en la población. Objetivos: Este trabajo tiene como principales objetivos presentar la evolución de los partos múltiples entre los años 1996 y 2008, tanto en la Región de Murcia como en España, examinar estos datos en función de la edad de la madre en el momento del nacimiento y analizar las posibles repercusiones de esta evolución. Método: Para ello se ha utilizado la información disponible en las bases de datos del Instituto Nacional de Estadística y del Centro Regional de Estadística de Murcia. Resultados: En los últimos años se ha producido un importante aumento en el número de partos múltiples tanto a nivel nacional como en las distintas comunidades autónomas, la Región de Murcia entre ellas. La tasa de partos gemelares o de orden mayor ha pasado a ser de 13.1‰ en 1996 a 18.4‰ en 2008 en Murcia (12.7‰ a 19.4‰ en España). El mayor incremento se ha producido en los grupos de madres a partir de los 30 años. Conclusiones: Esta situación presenta implicaciones importantes para el sistema de salud en su conjunto y para las familias. Éstas necesitan conseguir una adaptación en la que puede colaborar de forma decisiva el profesional sanitario proporcionando una información y orientación adecuadas.
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    Comunicaciones Orales.-Relación entre la calidad de sueño y el Índice de masa corporal
    (2020-05-26) Madrid Valero, Juan José; Martínez Selva, José María; Ordoñana Martín, Juan Ramón; Facultades, Departamentos, Servicios y Escuelas::Departamentos de la UMU::Anatomía Humana y Psicobiología
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