Repositório Científico do Instituto Politécnico de Castelo Branco
RC IPCB - Repositório Científico
Entradas recentes
Diagnóstico diferencial de anemias: guia prático
Publication . Martins, Sílvia Raquel Monteiro
A anemia constitui um dos distúrbios hematológicos mais prevalentes a nível global, sendo frequentemente um marcador clínico de condições subjacentes com etiologia multifatorial, incluindo desequilíbrios nutricionais, disfunções genéticas hereditárias, processos inflamatórios crónicos e neoplasias hematológicas ou sólidas. Caracteriza-se por uma redução da capacidade de transporte de oxigénio do sangue, resultante de diminuição da massa eritrocitária ou da concentração de hemoglobina, refletindo alterações nos mecanismos de eritropoiese, destruição eritrocitária ou perda sanguínea [1].
Este manual tem como objetivo fornecer um guia sistematizado para o diagnóstico diferencial das anemias, baseando-se na morfologia eritrocitária, índices eritrocitários, parâmetros laboratoriais e casos clínicos.
Virtual and augmented reality in contemporary art performances
Publication . Assembek, Seniya; Diachuk, Valentyna; Kunderevych, Olena; Yermolajeva, Yuliia; Sharypin, Andrey; IPCB. ESART
Abstract: The integration of virtual reality (VR) and augmented reality (AR) technologies into the field of fine arts opens up new opportunities for transforming the artistic space, enriching the viewers’ aesthetic experience, as well as activating cognitive and perceptual processes. The relevance of the study is determined by the rapid development and implementation of AR/VR technologies in artistic practices, which requires an academic understanding of their aesthetic, cognitive, and cultural consequences. The combination of digital media, 3D modelling, and interactive sensory scenarios contributes to the creation of dynamic artistic performances in which figurative thinking, aesthetic image, and stylistics acquire virtual multidimensionality. The aim of the research is to analyse the ways in which VR/AR technologies are used in artistic practices of contemporary art with a focus on the new forms of interaction between the author, image, and recipient. The research employed the following methods: qualitative analysis of digital installations and stage practices with elements of vir-tual space, a comparison of the perceptual reactions of the audience, and the study of 3D modelling as a tool for creating an artistic environment. The results indicate the growing role of digitalization and artificial intelligence (AI) in the evolution of the visual code of contemporary art, the expansion of the stylistic and cognitive boundaries of perception, and the rethinking of aesthetic mechanisms in the context of interactivity and simulative reality. The academic novelty is identified patterns of shifting the emphasis from the art object to the artistic interaction process, where VR/AR and 3D modelling are leading mediators of visual transformation. Prospects for further research may be studying the impact of digital performances on the viewers’ emotional and perceptual experience and the role of AI algorithms in the artistic generation of visual content.
Relationship between motor competence and weight status from childhood to adolescence (3-19 years)
Publication . Pombo, André; Luz, Carlos; Cordovil, Rita; Almeida, Gabriela; Rebelo, Miguel; Serrano, João; Rodrigues, Luis Paulo; Turkish Archives of Pediatrics
Objective: To evaluate the relationship between motor competence (MC) and weight status (WS) from childhood through adolescence.
Methods: A total of 4537 participants (2425 boys) aged 3-19 years were assessed. The MC was measured using the MC Assessment (MCA) instrument, and body mass index was calculated from height and weight.
Results: An inverted U-shaped relationship was observed between WS and MC. Participants with a healthy weight (HW) consistently showed higher total MCA scores compared to those with underweight (UW) (P = .002), overweight (OW), and obesity (OB) (both P < .001). The OB participants had the lowest MC scores overall (OB < OW < HW; P < .001), with UW also per-forming significantly worse than HW. This pattern was consistent in the Stability and Locomotor components. However, in the Manipulative component, UW participants scored significantly lower than all other groups (HW P = .028; OW P = .024; OB P = .017), while HW, OW, and OB did not differ significantly. These patterns were consistent across sex and age groups (all Ps > .05).
Conclusion: An association between WS and MC was observed across developmental stages, suggesting that HW profiles may be related to higher MC. The consistency of these patterns across age and sex suggests that biological and sociocultural mechanisms may jointly influ-ence this relationship throughout development.
Not all sitting is equal in later life: A perspective on cognitively active sedentary behavior
Publication . Ramalho, André; Fernandes, Emmanuel; Duarte-Mendes, Pedro; Paulo, Rui; Paulo, Rui
Sedentary behavior is conventionally defined as waking time spent sitting, reclining, or lying at very low energy expenditure (≤1.5 METs), a definition that supports surveillance and guideline translation. For cognitive and mental-health outcomes in later life, however, total sedentary minutes may be too coarse: seated episodes differ in cognitive demand, social context, autonomy over pacing, and stopping cues. This perspective advances a falsifiable thesis: distinguishing cognitively active from cognitively passive sedentary domains should yield more coherent and interpretable associations with cognition and mental health than total sedentary time alone. Existing evidence suggests that passive, media-dominant patterns and cognitively engaging seated practices relate differently to cognitive decline, dementia risk, and depression-related outcomes, although confounding and reverse causality remain central concerns. We propose a minimal measurement agenda: domain reporting, key modifiers, reliability flags for mixed episodes, episode-linked ecological momentary assessment, and time-reallocation contrasts. If domain resolution does not improve stability, coherence, or substitution-based interpretability, the thesis should be rejected or revised.
The effects of menstrual cycle phase on jumping performance in women's football players: a systematic review
Publication . Marques, Catarina; Rebelo, Miguel; Serrano, João; Fonseca, Helder; Frontiers in Sports and Active Living
Objectives: This systematic review aimed to evaluate the available evidence on the influence of menstrual cycle (MC) phases on vertical jump performance (countermovement jump and squat jump height) in female football players.
Design: The review was conducted in accordance with PRISMA guidelines and registered in PROSPERO (ID1035357).
Methods: A systematic search was performed in PubMed, Scopus, and SPORTDiscus (EBSCO). Studies were included if they involved female football players, assessed vertical jump performance, and compared performance across MC phases. Methodological quality was assessed using a modified Downs & Black checklist for non-interventional studies.
Results: Seven studies met the inclusion criteria. Substantial heterogeneity was observed regarding MC phase determination procedures, sample characteristics, and testing protocols. Although some studies reported higher vertical jump height values during the follicular or ovulatory phases, no statistically significant differences were found.
Conclusions: Current evidence is insufficient to determine whether MC phases influence vertical jump performance in female football players. Findings should be interpreted cautiously due to methodological limitations in MC phase determination and low statistical power. Future research should aim to standardize protocols, use objective hormonal verification, and recruit larger samples.