Clima motivacional hacia el deporte y su relación con hábitos de ocio digital sedentario en estudiantes universitarios

Resumen El uso abusivo de videojuegos se asocia a consecuencias negativas para la salud, como son problemas músculo-esqueléticos, patología ocular o problemas cognitivos y emocionales. Ante esta problemática, múltiples estudios han demostrado como un estilo de vida activo mediante la práctica deportiva genera efectos positivos para la salud que rompen con las consecuencias del ocio digital sedentario. Este estudio de carácter descriptivo y corte transversal, realizado en una muestra de 490 estudiantes universitarios, tiene como objetivo analizar la relación entre el clima motivacional hacia el deporte y el uso problemático de videojuegos, usando como principales instrumentos los cuestionarios CERV, CHCV y PMCSQ-2. Los resultados revelaron que aquellos universitarios que obtenían mayores puntuaciones en Clima Tarea y sus subcategorías eran los que menos problemas patológicos presentaban. Por el contrario, los participantes que padecían problemas potenciales o problemas severos, así como un nivel de uso y atracción medio, obtenían medias más elevadas en Clima Ego, Reconocimiento Desigual y Rivalidad entre Miembros. Se concluye que los universitarios con metas de logro en el deporte orientadas al Ego pueden presentar mayores problemas asociados al uso de videojuegos, principalmente por su búsqueda de motivaciones extrínsecas como la sensación de victoria, obtener mejor rendimiento que otros rivales o alcanzar nuevos retos. De este modo, resulta vital orientar la práctica deportiva a las motivaciones intrínsecas con el fin de evitar el abandono en el deporte y desarrollar una práctica más hedonista que se aleje de hábitos sedentarios.Abusive use of video games is associated with negative health consequences, such as musculoskeletal problems, eye disease, or cognitive and emotional problems. In this sense, several studies have shown that an active lifestyle based on sport practice can generate positive health effects that discontinue the consequences of sedentary digital leisure. This descriptive and cross-sectional research was conducted on a sample of 490 university students. The main objective was to determine the relationship between problematic use of video games and motivational climate in sports, using as main instruments the CERV, CHCV, and PMCSQ-2 questionnaires. The results showed that those students who got a higher score on Task Climate and its categories were the participants who presented less pathological problems. By contrast, students who had potential or severe problems, as well as a medium level of use and attraction to video games, got a higher average in Ego Climate, Uneven Recognition, and Rivalry among Members. It is concluded that university students with achievement goals in sports that are oriented to Ego can show more problems associated with the use of video games, mainly because of its pursuit of extrinsic motivations like the feeling of victory, achievement of better performance in comparison with rivals or the quest for new challenges. Therefore, it is vital to promote a sport practice associated with intrinsic motivations in order to avoid sport abandonment and develop a more hedonistic practice to avert sedentary habits

Rayas de agua dulce (Potamotrygonidae) de Suramérica. Parte II. Colombia, Brasil, Perú, Bolivia, Paraguay, Uruguay y Argentina

El libro es la continuación de una iniciativa de hace ya unos años (2012), donde varios países del área de distribución de la familia, decidieron unirse al ver como este recurso estaba disminuyendo o bien, era prácticamente desconocido. Este grupo tiene un gran impacto principalmente por su importancia como recurso pesquero ornamental, aunque también se usa como alimento, en la pesca deportiva y tiene incidencia en la salud pública. Para poder mitigar la posible sobreexplotación, surgió la necesidad de regular el comercio e intentar convertir la pesca ornamental de rayas en una actividad sostenible. Por ello, desde 2012 el IAvH junto a varios países propusieron la inclusión de varias especies al Apéndice III de Cites. Una de las limitantes de esta propuesta y por la cual no prosperó en su inicio, fue la falta de información sobre las especies.Bogotá, D. C

The High-Altitude water cherenkov (HAWC) observatory in México: The primary detector

The High-Altitude Water Cherenkov (HAWC) observatory is a second-generation continuously operated, wide field-of-view, TeV gamma-ray observatory. The HAWC observatory and its analysis techniques build on experience of the Milagro experiment in using ground-based water Cherenkov detectors for gamma-ray astronomy. HAWC is located on the Sierra Negra volcano in México at an elevation of 4100 meters above sea level. The completed HAWC observatory principal detector (HAWC) consists of 300 closely spaced water Cherenkov detectors, each equipped with four photomultiplier tubes to provide timing and charge information to reconstruct the extensive air shower energy and arrival direction. The HAWC observatory has been optimized to observe transient and steady emission from sources of gamma rays within an energy range from several hundred GeV to several hundred TeV. However, most of the air showers detected are initiated by cosmic rays, allowing studies of cosmic rays also to be performed. This paper describes the characteristics of the HAWC main array and its hardware.UCR::Vicerrectoría de Docencia::Ciencias Básicas::Facultad de Ciencias::Escuela de Físic

ATLANTIC ANTS: a data set of ants in Atlantic Forests of South America

International audienc

Combined dark matter searches towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS

Cosmological and astrophysical observations suggest that 85\% of the total matter of the Universe is made of Dark Matter (DM). However, its nature remains one of the most challenging and fundamental open questions of particle physics. Assuming particle DM, this exotic form of matter cannot consist of Standard Model (SM) particles. Many models have been developed to attempt unraveling the nature of DM such as Weakly Interacting Massive Particles (WIMPs), the most favored particle candidates. WIMP annihilations and decay could produce SM particles which in turn hadronize and decay to give SM secondaries such as high energy $\gamma$ rays. In the framework of indirect DM search, observations of promising targets are used to search for signatures of DM annihilation. Among these, the dwarf spheroidal galaxies (dSphs) are commonly favored owing to their expected high DM content and negligible astrophysical background. In this work, we present the very first combination of 20 dSph observations, performed by the Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS collaborations in order to maximize the sensitivity of DM searches and improve the current results. We use a joint maximum likelihood approach combining each experiment's individual analysis to derive more constraining upper limits on the WIMP DM self-annihilation cross-section as a function of DM particle mass. We present new DM constraints over the widest mass range ever reported, extending from 5 GeV to 100 TeV thanks to the combination of these five different $\gamma$-ray instruments