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Communities in RUIdeRA
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Item
Effects of chronic metformin treatment on training adaptations in men and women with hyperglycemia:
(Wiley, 2022) Moreno Cabañas, Alfonso; Morales Palomo, Felix; Alvarez Jimenez, Laura; Ortega Fonseca, Juan Fernando; Mora Rodriguez, Ricardo
This study aimed to determine whether chronic metformin use interferes with the improvements in insulin resistance (IR) and cardiorespiratory fitness with aerobic training in people with hyperglycemia and metabolic syndrome (MetS).
Item
Closing the loop through eco-innovation by European firms:
(Wiley, 2022) Triguero Cano, Ángela; Cuerva Narro, María del Carmen; Sáez Martínez, Francisco José
The purpose of this paper is to analyze the factors influencing the adoption of environmental innovations towards a circular economy (CE) by the EU firms, with special focus on technological capabilities and external support. A multivariate probit model is specified to allow the distinction between three types of eco-innovative practices: Reduce, Recycle, and Redesign technological processes. Using a novel taxonomy based upon the distinction between narrowing, closing, and slowing loops in the use of resources, we find that financial and technological capabilities are essential drivers for all types of CE actions in the European firms.
Item
4-(2-Hydroxyphenyl) imidazolium salts as organocatalysts for cycloaddition of isocyanates and epoxides to yield oxazolidin-2-ones
(Wiley, 2022) Caballero, María P.; Carrascosa, Fernando; Cruz Martínez, Felipe; Castro Osma, José A.; Rodríguez, Ana M.; North, Michael; Lara Sánchez, Agustín; Tejeda Sojo, Juan
Novel salts based on 1,3-dibutyl-4-(2-hydroxyphenyl)-1H-imidazolium bromide or iodide have been developed as bifunctional organocatalysts for the cycloaddition reaction of epoxides and isocyanates to form 3,4- and 3,5-disubstituted oxazolidin-2-ones. The molecular structure of these compounds was determined spectroscopically and confirmed by X-ray diffraction analysis.
Publication
Health-based physical education in an elementary school: effects on physical self-concept, motivation, fitness and physical activity
(Routledge Journals, Taylor & Francis LTD, 2024) Fernández Bustos, Juan Gregorio; Cuesta Valera, Pablo; Zamorano García, David; Simón Piqueras, Juan Ángel
Background: Promoting and developing health in Physical Education should not be limited to seeking to meet recommendations for physical activity and to increase motor competence or physical fitness, but should provide students with the motivation, confidence and knowledge required for them to be active for life. The Health-based Physical Education model (HbPE) is one of the most interesting models for health development. It takes a holistic perspective of health that is compatible with the salutogenic approach, where promoting and appreciating an active life is a core element (Haerens et al. 2011).
Purpose: The aim of this study was to examine the effects of a Health-based Physical Education programme on health-related factors (physical fitness and moderate-to-vigorous physical activity), emotional well-being (self-esteem and physical self-concept), and motivational factors (intention to be physically active and the degree of self-determination during practice).
Methods: A quasi-experimental design with pre- and post-test measures was applied to a sample composed of 131 schoolchildren aged 10 to 12 years (M = 10.87 ± 0.69) belonging to six randomly assigned class groups: three to the experimental group (n = 67) and three to the control group (n = 64). The experimental group participated in an intervention programme based on the HbPE model linked to a set of strategies to promote commitment, motivation and participation, while the control group completed a traditional programme for physical fitness improvement. As measures, we used Polar® HR monitors, the ALPHA-Fitness battery, the Motivation in Physical Education Questionnaire in Primary Education, the Intention to Be Physically Active Scale and the Pictorial Scale of Physical Self-Concept for Younger Children.
Findings: The experimental group showed higher levels of moderate-to-vigorous physical activity and a significant increase in physical fitness, including a reduction in BMI. Moreover, this group presented improvements in socio-emotional self-esteem, intrinsic motivation and the intention to be physically active. Nevertheless, against our hypothesis, quantitative analyses indicated no differences in physical self-concept.
Conclusion: These results support the use of HbPE as a model for designing and implementing health-promoting programmes that are compatible with a salutogenic approach. Apart from increasing physical activity and improving physical fitness, such programmes would provide knowledge and attitudes to foster practice beyond school.
Publication
Influence of natural aggregates typology on recycled concrete strength
(Elsevier, 2016) Laserna Arcas, Santiago Eduardo; Montero Martínez, Jesús
This paper reports a study on recycled aggregates concrete to analyze the influence of using two different types of natural aggregates, river aggregates and crushed aggregates, on the strength properties of recycled aggregates concrete. A total of twenty different mixes were analyzed with an effective water/cement ratio of 0.5 and cement contents of 260?300?340 kg/m3 for recycled rates of coarse aggregates of 0?20?50?100%. The results show that the strength property depends of the type of natural aggregate used and of the recycled replacement ratio. An increment of 15% on compressive strength was obtained for river natural aggregates and 100% recycled replacement ratio, while a decrease of approximately 10?25% was observed for mixtures with crushed natural aggregates performed under similar manufacturing conditions.