RESUMO
Today, psychological health is a significant health concern. For this reason, it has been deemed essential to investigate how physical activity (PA) and sports can enhance psychological well-being (PWB). Consequently, this study aims to examine and comprehend how young adults perceive PWB through PA. This study's sample consists of 34 participants between the ages of 23 and 28. All participants in this study responded to semi-structured questionnaires that included photo-elicitation as a research technique. Young adults perceived physical activity and sports as a place to cultivate their PWB by emphasizing personal development, life purpose, and social relationships. In addition, the data analysis produced new dimensions such as liberty, self-assurance, and personal equilibrium. This study provides further information that will assist policymakers and researchers in developing effective PWB and mental health promotion programs and strategies for young adults and adolescents.(AU)
Assuntos
Humanos , Masculino , Feminino , Adulto Jovem , Seguridade Social , Atividade Motora , Relações Interpessoais , Esportes , Esportes/psicologia , Promoção da SaúdeRESUMO
Digital competence is considered to be a crucial learning outcome in education in the 21st century. In this context, research highlights the fact that the perceptions that instructors manifest about different aspects of Information and Communication Technologies (ICTs) condition these professionals' behaviour towards these learning resources. In the same line, this study aims to analyse the effects that exist between a series of dimensions related to the perception of university teaching staff on the capacity of ICTs to respond to different needs of students, on perceived efficacy and attitudes towards these tools and, lastly, on active behaviour towards their use. To do so, 345 university instructors from the Spanish educational system filled in an online questionnaire. The application of a Structural Equation Model underscores the fact that the ability of ICTs to respond to the different needs of students in the university classroom and their perceived efficacy in the teaching-learning process both exert a positive effect on attitudes in favour of their incorporation into the classroom. In turn, these attitudes also have a significant effect on active behaviour with ICT resources. In addition, various mediating effects are seen to influence an active behaviour. All this gives rise to a discussion on the implications of these results to encourage the training of university teaching staff in the knowledge and management of ICTs. Increasing confidence in ICTs as effective tools to respond to different needs could significantly favour positive attitudes and behaviour so that these resources are actively integrated into the classroom.
RESUMO
Technological resources have the potential to improve the quality of life in a context in which social pressure for the use of these tools is increasing. In this sense, the adoption of technological resources by the elderly is a highly complex issue because numerous and varied factors are involved. Precisely for this reason, this study aims to analyze the effects that exist between a series of dimensions related to the perception of older people regarding the ease of use, the perceived usefulness of technological tools, attitudes towards technology and their intention to use them in everyday life. To do this, 415 adults (M = 66.27 years) enrolled in a program at the University of Experience in the Spanish context completed an online questionnaire. The application of a Structural Equations Model for data analysis highlights that the perceived ease of use of the technology has a positive effect on the perceived usefulness of these resources. Similarly, an indirect effect of the perceived usefulness of technology on the intention to use these resources is observed through the manifestation of positive attitudes towards the use of digital tools.
RESUMO
Quinolinic acid is a well-known excitotoxin that induces oxidative stress and damage. In the present study, oxidative damage to biomolecules was followed by measuring lipid peroxidation and protein carbonyl formation in rat brain tissue culture over a period of 24 hr of exposure to this prooxidant agent at a concentration of 0.5 mm. Quinolinic acid enhanced lipid peroxidation in an early stage of tissue culture, and protein carbonyl at a later stage. These data confirm and extend previous studies demonstrating that quinolinic acid can induce significant oxidative damage. Melatonin, an antioxidant and neuroprotective agent with multiple actions as a radical scavenger and signaling molecule, completely prevented these prooxidant actions of quinolinic acid at a concentration of 1 mm. Morphological lesions and neurotoxicity induced by quinolinic acid were evaluated by light microscopy. Quinolinic acid produced extensive apoptosis/necrosis which was significantly attenuated by melatonin. Cotreatment with melatonin exerted a profound protective effect antagonizing the neurotoxicity induced by quinolinic acid. Glutathione reductase and catalase activities were increased by quinolinic acid and these effects were antagonized by melatonin. Furthermore, melatonin induced superoxide dismutase activity. Quinolinic acid and melatonin acted independently and by different mechanisms in modulating antioxidant enzyme activities. Our findings using quinolinic acid and melatonin clearly demonstrate that such changes should always be seen in the context of oxidative neurotoxicity and antioxidant neuroprotection.
