Percorrer por autor "Fortunato, Álvaro"
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- Aerobic fitness as an important moderator risk factor for loneliness in physically trained older people: an explanatory case study using machine learningPublication . Encarnação, Samuel; Vaz, Paula Marisa Fortunato; Fortunato, Álvaro; Forte, Pedro; Vaz, Cátia; Monteiro, A.M.Loneliness in older people seems to have emerged as an increasingly prevalent social problem. Objective: To apply a machine learning (ML) algorithm to the task of understanding the influence of sociodemographic variables, physical fitness, physical activity levels (PAL), and sedentary behavior (SB) on the loneliness feelings of physically trained older people. Materials and Methods: The UCLA loneliness scale was used to evaluate loneliness, the Functional Fitness Test Battery was used to evaluate the correlation of sociodemographic variables, physical fitness, PAL, and SB in the loneliness feelings scores of 23 trained older people (19 women and 3 men). For this purpose, a naive Bayes ML algorithm was applied. Results: After analysis, we inferred that aerobic fitness (AF), hand grip strength (HG), and upper limb strength (ULS) comprised the most relevant variables panel to cause high participant loneliness with 100% accuracy and F-1 score. Conclusions: The naive Bayes algorithm with leave-one-out cross-validation (LOOCV) predicted loneliness in trained older with a high precision. In addition, AF was the most potent variable in reducing loneliness risk.
- Autoestima de crianças e Jovens praticantes de futebol: Influência do apoio Social e bullyingPublication . Flor, Sílvia; Fortunato, Álvaro; Gonçalves, Celina; Lopes, Vitor P.Em ambos os sexos, muito pouca associação e, por tanto, nem o supor te social nem o bullying predizem a autoestima.
- Envelhecimento e Solidão: Um estudo com pessoas idosas a frequentar um programa de exercício físico na cidade de BragançaPublication . Vaz, Paula Marisa Fortunato; Monteiro, António M.; Fortunato, ÁlvaroNo contexto do envelhecimento da população e das mudanças na organização da sociedade, bem como na estrutura e na dinâmica das famílias, a solidão emerge como um problema social do qual várias consequências podem advir. Salienta-se o sofrimento de quem a sente e a associação a uma menor qualidade de vida (Rodrigues, 2018), ao aumento da mortalidade e a um maior risco de algumas doenças cardiovasculares, metabólicas e neurológicas, problemas de saúde mental (Hawkley, 2022; Rodrigues, 2018). Tem aparecido associada a depressão, a diminuição do bem-estar, ansiedade, ideação suicida, e até a maior susceptibilidade ao abuso de terceiros (Hawkley & Capitanio, 2015). Segundo Hawkley (2022), a redução da solidão passa pela implementação de abordagens articuladas a nível individual, comunitário e social. Fabian e Jens (2016), numa análise de 37 estudos observaram evidência do valor potencial da atividade física na redução da solidão, dado o seu potencial na melhoria da competência social.
- Fatores associados à retenção e abandono no futebol infantojuvenilPublication . Lopes, Vitor P.; Fortunato, Álvaro; Gonçalves, CelinaOs praticantes de desporto infantojuvenil tendem a apresentar melhor coordenação motora, composição corporal e aptidão cardiorrespiratória comparativamente aos não participantes. Infelizmente, a participação desportiva tende a evidenciar uma elevada taxa de abandono (25%). A literatura é escassa em estudos longitudinais sobre a retenção e abandono. Além disso, os dados atualmente disponíveis são retrospetivos. Também não temos conhecimento de estudos anteriores que tenham considerado a competência motora real (CM), como um fator associado à retenção e abandono. Vários estudos consideraram CM percebida, mas não CM real. As teorias de mudança de comportamento baseadas na psicologia abordam o conceito de perceções individuais de competência a partir de uma perspetiva motivacional. No entanto, também é essencial entender a importância da CM real. Em 2017, iniciámos um estudo longitudinal com N= 215 crianças e jovens (4 a 14 anos) para identificar fatores (motivos) associados à retenção e abandono no futebol juvenil. Uma ampla gama de variáveis potencialmente relacionadas com a retenção e abandono no futebol foram avaliadas, especificamente, CM, proficiência em habilidades específicas, aptidão física, estado de crescimento e maturação sexual, apoio social (pais, irmãos e amigos), bullying e atitudes em relação prática. Utilizou-se a Regressão Logística de Efeitos Mistos. Os resultados mostram que apenas as relações interpessoais, com um efeito negativo, e a perceção do esforço físico foram preditores da retenção.
- Mental illness risk prediction in high school students using artificial neural networkPublication . Encarnação, Samuel; Vaz, Paula Marisa Fortunato; Vaz, Filipe J.A.; Fortunato, Álvaro; Monteiro, António M.The sustainable development goals of the United Nations 2030 agenda, goal number 3 – Good health and well-being- align with student mental health. Objective: To conduct an artificial neural network (ANN) to predict the students' self-reported mental health dimensions. Methods: A cross-sectional and observational study enrolling sociodemographic and health state data from 2050 university students aged (18–30 years). Results: The best algorithm's result was by predicting the students' depressive state with 97 % accuracy (weighted average = [precision = 0.79 %, recall = 0.79 %, F-1 score 0 0.79 %, cross-validation (73 %)]), while dimensions such overall mental health self-perception (validation accuracy = 60 %) and lack of interest in performing their activities of daily living [(ADLs), validation accuracy = 67 %], presented inferior predictions. Conclusions: The ANN best predicted the university students' depressive state (73 %).
- Perspetivas de professores do ensino básico e secundário acerca do processo de avaliação do desempenho docentePublication . Fortunato, Álvaro; Vaz, Paula Marisa FortunatoEste estudo teve como finalidade compreender como a avaliação do desempenho poderá estar a ser perspetivada pelos professores dos ensinos básico e secundário. Definiram-se três objetivos: a) perceber a perspetiva dos professores relativamente à existência da avaliação do desempenho docente; b) identificar os problemas que os professores apontam aos processos de avaliação do desempenho docente; c) recolher sugestões acerca do modo como a avaliação do desempenho docente deve ser efetuada. Realizou-se um estudo qualitativo, com recurso à entrevista semiestruturada, tendo participado 12 professores. O conteúdo resultante da transcrição das entrevistas, foi analisado recorrendo à análise do conteúdo. Foi possível concluir que: (1) a totalidade dos participantes manifestou-se favorável à existência de um sistema de avaliação; (2) os principais problemas apontados aos processos de avaliação são a burocracia e o facto de ser feita por pares, o que pode condicionar a isenção e o rigor; (3) as sugestões dadas pelos participantes apontam para a necessidade de a avaliação ser efectuada por equipas com ligação às faculdades, pelo coordenador de departamento e o órgão de gestão da escola, o diretor da escola, por observadores externos, ou ainda por professores com formação.
- Physical fitness, but not specific skill levels nor motor coordination, is associated with coaches’ perception of young soccer players competencePublication . Lopes, Vitor P.; Fortunato, Álvaro; Gonçalves, Celina; Rodrigues, Luis PauloMany youth sports programs in sport clubs aim to delop sporting excellence and focus on results, with the tengible success of a sports program often related to the club's ability to produce good athletes within specific sporting disciplines.
- The power of self-love: an artificial neural network based on neuroscience inference to predict university students self-reported mental health dimensionsPublication . Fortunato, Álvaro; Encarnação, Samuel; Vaz, Paula Marisa Fortunato; Vaz, Filipe J.A.; Monteiro, A.M.In line with the sustainable development goals of the United Nations 2030 agenda, namely goal number 3 – Good health and well-being -, student mental health is a global goal, first because it is health we are talking about and secondly because it has implications in the quality of learning and, consequently, in the adequate preparation of professionals for society. This study aimed to conduct an artificial neural network (ANN) to predict the student’s self-reported mental health dimensions. This is a cross-sectional and observational study enrolling data collected by applying a questionnaire comprising sociodemographic and health state variables from 2050 university students aged (18-30 years). The algorithm predicted the student’s overall mental health state self-perception with 94% accuracy (weighted average= [precision= 0.67%, recall= 0.67%, F-1 score0 0.67%]) and was cross-validated with reasonable accuracy (60%). The student’s depressive state was predicted with 97% accuracy (weighted average= [precision= 0.79%, recall=0.79%, F-1 score0 0.79%], and was cross-validated with good accuracy (73%). The student’s lack of interest in performing their activities of daily living (ADLs) was predicted with 94% accuracy (weighted average= [precision= 0.69%, recall=0.77%, F-1 score0 0.76%], and was cross-validated with reasonable accuracy (67%). The ANN presented excellent learning performance (>90%) for all targeted variables, within reasonable to good generalization capacity (60-73%). Finally, the university student’s depressive state was the best-predicted variable (73%).
- The power of self-love: an artificial neural network based on neuroscience inference to predict university students self-reported mental health dimensionsPublication . Fortunato, Álvaro; Encarnação, Samuel; Vaz, Paula Marisa Fortunato; Vaz, Filipe J.A.; Monteiro, A.M.Student mental health is a global goal, first because it is health we are talking about and secondly because it has implications in the quality of learning and, consequently, in the adequate preparation of professionals for society. The ANN presented excellent learning performance (> 90%) for all targeted variables, within reasonable to good generalization capacity (60-73%). Finally, the university student’s depressive state was the best-predicted variable (73%).
- The relationship between training load, physical performance and physiological adaptations in Rugby football players: a systematic reviewPublication . Paiva, Eduardo; Valentim, Sérgio; Reis, Tiago; Teixeira, José Eduardo; Branquinho, Luís; Fortunato, Álvaro; Forte, PedroApplying appropriate training loads in accordance with the defined objectives promotes optimal physical and physiological adaptations, reduces the likelihood of illness and injury and, therefore, increases the possibility of success during Rugby. The aim of this review was to compile and systematise the information in the literature on the association between training load variables (internal and external) and performance outcomes in Rugby. As such, the main objective will be to conduct a systematic review of the published literature to identify the physical and physiological performance variables in Rugby sport to monitor the training load. Following the preferred reporting item for systematic reviews and meta-analyses (PRISMA) and PICOS approach, the search was adapted and conducted systematically only in the PubMed database, which, in itself, also restricts the search spectrum of the paper, thus conferring a limitation to the present academic work. The search was conducted in PubMed throughout the possible temporal spectrum since there is still little robustness in the literature about rugby sports performance. Articles were selected by pre-defined selection criteria, including observational, randomised clinical and clinical trial studies. After further screening, and based on the inclusion criteria of the papers, the result of the analysis of the relevance of the studies, the final set of analysis resulted in 16 articles. From the studies compiled in this review, there seems to be a strong correlation between the perceived exertion (RPE) and the prescription and definition of the training load applied in Rugby athletes. The RPE reflects the most used and analysed variable throughout all the studies. Several articles reflect a strong relationship between the training load, the inter-individual capacity of each athlete and their tolerance to the load (player load)