Repositorio Institucional
Sistema de Bibliotecas Universidad Finis Terrae
El Repositorio Institucional de la Universidad FinisTerrae, es gestionado por el Sistema de Bibliotecas y tiene por objetivo permitir el acceso libre a la producción académica e institucional de la Universidad, aumentando la visibilidad de sus contenidos y garantizando su conservación.
Envíos recientes
The effects of maca (lepidium meyenii walp) on cellular oxidative stress: a systematic review and meta-analysis
(MDPI, 2024-08-28) Huerta Ojeda, Álvaro; Rodríguez Rojas, Javiera; Cuevas Guíñez, Jorge; Ciriza Velásquez, Stephanie; Cancino, Jorge; Barahona Fuentes, Guillermo; Yeomans Cabrera, María Mercedes; Pavez, Leonardo; Jorquera Aguilera, Carlos
Lepidium meyenii Walp (LmW) or Maca, including its bioactive components such as macamides, among others, has demonstrated antioxidant effects. However, the effect size (ES) of LmW on oxidative stress has not been qualitatively described and calculated. The primary objective of this systematic review and meta-analysis was to review and qualitatively describe the studies published up to 2023 that supplemented LmW to control cellular oxidative stress; the secondary objective was to calculate the ES of the different interventions. The search was designed following the PRISMA® guidelines for systematic reviews and meta-analyses and performed in the Web of Science, Scopus, SPORTDiscus, PubMed, and MEDLINE until 2023. The selection of studies included randomized controlled trials, with tests and post-tests, both in vitro and in vivo in animals and humans. The methodological quality and risk of bias were evaluated with the CAMARADES tool. The main variables were reduced glutathione, glutathione peroxidase, superoxide dismutase, and malondialdehyde. The analysis was conducted with a pooled standardized mean difference (SMD) through Hedges’ g test (95% CI). Eleven studies were included in the systematic review and eight in the meta-analysis. They revealed a small effect for reduced glutathione (SMD = 0.89), a large effect for glutathione peroxidase (SMD = 0.96), a moderate effect for superoxide dismutase (SMD = 0.68), and a moderate effect for malondialdehyde (SMD = −0.53). According to the results, the phytochemical compounds of LmW effectively controlled cellular oxidative stress, mainly macamides. It was also determined that a higher dose of LmW generated a greater antioxidant effect. However, information concerning humans is scarce.
Creatine supplementation prior to strength exercise training is not superior in preventing muscle mass loss compared with standard nutritional recommendations in females after bariatric surgery: a pilot study
(Springer Nature, 2024) Díaz Pizarro, Marcelo; Pino Zúñiga, Johanna; Olivares Gálvez , Mariela; Rendón Vesga , Carolina; Luengas Tello, Rafael; Duque Seguro, Juan Camilo; Cancino, Jorge
Background: This study examines whether creatine supplementation combined with strength training mitigates muscle mass loss in women during early rehabilitation post-bariatric surgery, as its effectiveness remains untested in this context. Methods: Fifteen women (37.8 ± 9.6 years; BMI, 38.8 ± 5.6 kg/m2) completed the intervention (creatine group = 7; placebo group = 8). Both groups followed a strength training program three times a week for 8 weeks. The dosage for both the creatine and placebo was 8 g prior to each exercise session. Body weight, skeletal muscle mass, fat mass, handgrip strength, and physical activity levels were measured before and after the intervention. Results: The creatine group showed a reduction of 9.5 ± 1.5 kg in body weight, with a 0.72 ± 0.6 kg decrease in muscle mass and an 8.64 ± 1.2 kg reduction in fat mass. The placebo group had a reduction of 9.6 ± 3.5 kg in body weight, with a 0.6 ± 1.2 kg decrease in muscle mass and an 8.88 ± 3.2 kg reduction in fat mass, without significant differences between groups (p > 0.05). Conclusion: The pre-session strength exercise training creatine supplementation is not superior to placebo regarding body weight and fat mass losses and the attenuation of muscle mass loss during the first weeks of rehabilitation following bariatric surgery.
Emotional self-regulation and personality in the light of Thomas Aquinas’s philosophical anthropology
(Frontiers Media S.A., 2024-05-31) Rojas Saffie, Juan Pablo; García-Matte, Nicolás
This article aims to thoroughly understand the concept of emotional selfregulation (ESR) and its relationship with personality. Through an interdisciplinary dialogue between psychology and philosophy—specifically, the anthropology of Thomas Aquinas—three realities are proposed that could be considered as ESR. The conceptual relationship between ESR—understood as operation, faculty and habit—and personality is examined, specifically using the Five-Factor Model and the virtues model. Key findings include the need for consensus on a precise definition of ESR, the central role of reason as a faculty capable of ruling over emotions, the relevance of the distinction between ESR and selfcontrol, and the understanding of ESR as a set of habits that include aspects of prudence, temperance and fortitude. Interdisciplinary dialogue seems to be a valuable intellectual approach to the advancement of the field of psychology.
Fisiopatología y clasificación de los estados de choque
(Grupo Distribuna, 2024) Jaramillo-Bustamante, Juan Camilo; Díaz, Franco; Donoso Fuentes, Alejandro
El choque es una condición de la naturaleza aguda, sindrómica y patológica, y es una manifestación común de muchas formas de enfermedades críticas en la población infantil. Si bien la presencia de hipotensión arterial señala un estado de choque, su ausencia no la descarta. La fisiopatología del choque se basa en los conceptos de entrega de oxígeno, en los factores que regulan esta entrega y en los requerimientos tisulares del mismo (consumo de oxígeno).
Aprendizajes sobre la vulneración a la infancia durante la pandemia COVID-19: enfermedad, evidencia y políticas públicas
(Sociedad Chilena de Pediatría, 2024-11-01) Díaz, Franco
La pandemia de COVID-19 ha tenido repercusiones significativas en niños, niñas y adolescentes (NNA), tanto por los efectos directos del virus como por las medidas de salud pública aplicadas. Presentamos un análisis de los aciertos y errores en la respuesta gerontocéntrica a la pandemia, que invisibilizó a los NNA del panorama global, de su salud y ciclo vital. Contraponiéndose con la discreta incidencia de COVID-19 pediátrico, múltiples guías se desarrollaron precipitadamente para terapia, afectando el enfrentamiento de otras enfermedades, por ejemplo, el soporte respiratorio no-invasivo y terapia inhalada. Las medidas de confinamiento y cierre de colegios tuvieron un impacto mínimo en la propagación del virus, desmitificando el rol de supercontagiantes, pero su mantención prolongada se basó en decisiones no respaldadas por evidencia, resultando en una importante pérdida educativa y trastornos psicosociales. La crisis de salud mental en NNA se ha agudizado, con un aumento rápido de depresión y trastornos alimentarios, especialmente en grupos socioeconómicamente vulnerables. Otros ámbitos de salud fueron alterados, como la interrupción de servicios sanitarios preventivos, chequeos rutinarios y vacunaciones, diagnósticos de enfermedades como cáncer y terapias de rehabi-litación. Además, se analiza críticamente la narrativa de los mandatos de uso de mascarillas y vacunas en NNA. En conclusión, reflexionamos sobre los aciertos y errores durante la pandemia en puntos críticos de la salud de NNA, con el fin de aprender y optimizar nuestra respuesta a situaciones futuras. Es imperativo adoptar medidas urgentes para identificar y mejorar en estas áreas, cuyos catastróficos efectos recién comenzamos a entender en NNA, y futuros adultos.