Background: Heart rate variability (HRV) has been considered as a measure of heart-brain interaction and autonomic modulation, and it is modified by cognitive and attentional tasks. In cognitive tasks, HRV was reduced in participants who achieved worse results. This could indicate the possibility of HRV predicting cognitive performance, but this association is still unclear in a high cognitive load sport such as chess Objective: To analyse modifications on HRV and subjective perception of stress, difficulty and complexity in different chess problem (...) tasks. Design: HRV was assessed at baseline. During the chess problems, HRV was also monitored, and immediately after chess problems the subjective stress, difficulty and complexity were also registered. Method: A total of 16 male chess players, age: 35.19 (13.44) and ELO: 1927.69 (167.78) were analysed while six chess problem solving tasks with different level of difficulty were conducted (two low level, two medium level and two high level chess problems). Participants were classified according to their results into two groups: high performance or low performance. Results: Friedman test showed a significant effect of tasks in HRV indexes and perceived difficulty, stress and complexity in both high and low performance groups. A decrease in HRV was observed in both groups when chess problems difficulty increased. In addition, HRV was significantly higher in the high performance group than in the low performance group during chess problems. Conclusions: An increase in autonomic modulation was observed to meet the cognitive demands of the problems, being higher while the difficulty of the tasks increased. Non-linear HRV indexes seem to be more reactive to tasks difficulty, being an interesting and useful tool in chess training. (shrink)

The dual career allows elite athletes to attain their maximum competitive and academic performance, but the COVID-19 pandemic hindered their development and changed their perception of the importance given to the sporting and educational environment. For this reason, the aim of the present study was to determine the differences in the motivations and perceived barriers, the importance given to academic qualifications, and the perception of the dual career from a multifactorial perspective, of elite athletes according to sex, type of sport (...) practiced, job performance, time of sports career, type of athlete, and type of scholarship received. A total of 100 student-athletes participated in the research study by completing the “Perceptions of dual career student-athletes” questionnaire. The results showed that athletes from individual modalities and those who did not receive any scholarships described more barriers. In addition, women studied more because they enjoyed it ; athletes from individual modalities studied to work later ; athletes who do not work perceived a greater influence between study and sports performance ; at the beginning and at the best stage of their sports career, a greater influence of academics on performance was perceived ; and athletes who considered themselves professionals, and athletes who did not receive any scholarships, reported that the conciliation between sports and academic life was difficult. The results obtained point to the importance of dual career scholarships for student-athletes, as well as the need for the programs implemented for these athletes to consider sex, sport modality or type of scholarship granted. (shrink)

Objective: This study aimed to compare the effects of two intervention programs, high-intensity interval training and moderate-intensity training, on anxiety, depression, stress, and resilience during the confinement caused by the coronavirus disease 2019 in healthy adults.Methods: A total of 67 adults who participated were randomly assigned to two groups: HIIT and MIT groups. The MIT group had to perform a home-based intervention based on aerobic exercises, whereas the HIIT group had to perform a home-based intervention based on HIIT exercises. The (...) two groups had to complete the same physical exercise volume, 40 min per session during the confinement period. Depression, anxiety, stress, and resilience were assessed before and after the intervention.Results: Results showed that HIIT and MIT significantly reduced the stress, anxiety, and depression as well as increase the resilience. Moreover, the improvements obtained in the HIIT group seem to be greater than those of the MIT group in depression.Conclusions: HIIT and MIT decreased anxiety, stress, and depression as well as increased resilience during the COVID-19 confinement. In addition, the HIIT intervention seemed to be more beneficial to reduce depression than the MIT intervention. (shrink)

EI gran filósofo catalón, español, iberoamericano y universal Juan David García Bacca, cuya obra inmensa y de impresionante variedad y proyección sobre todas las áreas cientfíicas y humanas se sigue acrecentando cada día, a sus 84 años de edad, con nuevas creaciones -hombre a quien THEORIA tanto debe como inspirador, colaborador y fiel apoyo, desde su exilio venezolano, en los tiempos dificiles de la primera salida de la revista, entre 1952 y 1956- ha querido hoy hacernos llegar, junto a (...) su primer artículo para la nueva etapa, que publicamos en las páginas siguientes, su cordial saludo a la nueva THEORIA, que reproducimos a continuación. (shrink)

Nietzsche uses many of the arguments used by himself against metaphysics in general to criticize the Cartesian cogito. The affinity indicated by Descartes himself between cogito and conscience means that the study focuses on the Nietzschean analysis of the problem of conscience, paying special attention to its anthropological implications. Faced with Cartesian reasoncentrism, Nietzsche maintains that, given that conscience is not an entity removed from the natural world, it is possible to present a strictly naturalist anthropology, eliminating the need to (...) resort to dualist hypothesis drawn from metaphysics or theology. (shrink)

We report three experimental studies of reasoning with double conditionals, i.e. problems based on premises of the form: If A then B. If B then C. where A, B, and C, describe everyday events. We manipulated both the logical structure of the problems, using all four possible arrangements (or ''figures" of their constituents, A, B, and C, and the believability of the two salient conditional conclusions that might follow from them, i.e. If A then C , or If C then (...) A . The experiments showed that with figures for which there was a valid conclusion, the participants more often, and more rapidly, drew the valid conclusion when it was believable than when it was unbelievable. With figures for which there were no valid conclusions, the participants tended to draw whichever of the two conclusions was believable. These results were predicted by the theory that reasoning depends on constructing mental models of the premises. (shrink)

Se realizó una investigación con el objetivo de elaborar actividades que relacionan los elementos teóricos con la práctica desde la asignatura Defensa Civil, para contribuir a la participación de estudiantes universitarios y habitantes de la comunidad "Los Coquitos" en la prevención, mitigación o solución de los problemas ambientales que la afectan. Se aplicó un pre-experimento que permitió comprobar la efectividad de las actividades desarrolladas. Esta propuesta favoreció la vinculación de la escuela con la comunidad desde la protección del medio ambiente. (...) A research was carried out with the aim of designing tasks that relate theoretical elements with the practice in Civil Defense to contribute to the participation of university students and inhabitants of Los Coquitos community in the prevention, lessening or solution of the environmental problems it faces. A pre-experiment was applied which allowed to test the effectiveness of these tasks. This proposal favored the relation between the school and the community taking into account the environmental protection. (shrink)

Delimitando el problema mente-cerebro como específicamente moderno, diverso del de las relaciones cuerpo-alma, el autor realiza una fenomenología del darse de lo físico y de lo mental como pórtico necesario para indagar el tipo de relaciones que cabe concebir entre esos dos ámbitos fenoménicos. El recorrido de las diversas teorías se hace agrupándolas en dos enfoques generales: las teorías dualistas y las teorías monistas. A la exposición de cada una se acompañan las objeciones principales que cabe alzar contra ellas. Al (...) final del recorrido, el autor ofrece un argumento contra el materialismo monista, que, sin ser definitivo, parece abonar la mayor plausibilidad de la hipótesis dualista. (shrink)

Esta introducción presenta los estudios del volumen como respuestas a la primera de las tres preguntas fundamentales de la ontología: ¿Qué hay?, ¿Qué es el ser?, ¿Por qué hay algo y no más bien nada? A pesar de que la tercera cuestión ha sido considerada como la más originaria, la admiración de la que nace alcanza su plenitud cuando el filósofo se pregunta, además, por qué las cosas son así y no de otro modo. Pero esta nueva pregunta solo puede (...) surgir cuando el filósofo detiene su mirada ante la irreductible variedad de lo real, es decir, cuando se ocupa con los problemas fundamentales de la teoría de las categorías. (shrink)

In the Middle Age it was tried to show that índex of five predicables that Porfirio proposes in Isagoge was suitable and complete. More recently it is affirmed that chis índex is incomplete, and thal can add a new predicable that also Aristotle would have considered: the accidents per se.

El objeto de este trabajo es exponer la enseñanza de los comentarios neoplatónicos griegos sobre el carácter completo del catálogo aristotélico de las categorías en sí mismo considerado. Esta enseñanza puede contribuir a la clarificación del debate actual sobre el problema de la naturaleza de las categorías y su número. Se analizan y discuten los comentarios a las Categorias debidos a Porfirio, Dexipo, Ammonio, Simplicio, Olimpiodoro, Elías y Filopón.

In this account we include the list of works published by Polo and the studies by other authors about his philosophical ideas. At the end, we offer a list of unpublished works. We also explain the reasons for the generation and composition of Polo’s archive.