57 documents found, page 1 of 6
Ultrasound stimulation increases cartilage synthesis and revert dedifferentiati...
Oliveira, Sofia; Ferreira, Débora Carina Gonçalves Abreu; Padrão, Jorge; Catarino, Susana Oliveira; Monteiro, Francisca Andreia Azevedo; Zille, AndreaTherapeutic ultrasound (US) holds promise as a potential therapy to treat articular cartilage; however, optimized and targeted US protocols are lacking. This study aimed at determining an appropriate set of US protocols for stimulating human chondrocyte activity. Human chondrocytes were exposed to various US parameters, including different central frequencies, power densities, operation modes, pulse parameters,...
Electroactive coatings on laser-textured titanium-based substrates for an impro...
Silva, Pedro F.; Crispim, Tiago R.; Carvalho, Óscar Samuel Novais; Fernandes, Mariana P.; Moreira, Joana Catarina Dias; Oliveira, SofiaThe growing aging population and the rising prevalence of osteodegenerative diseases indicate an increasing demand for orthopaedic implants worldwide. One of the main causes of failure of these implants are linked to nosocomial infections, and traditional approaches, such as antibiotics, are becoming limited by the development of resistance. In this work, titanium (Ti6Al4V) samples, typically used in orthopaedi...
Bystander apathy in cyberbullying: when moral engagement disconnects
Pereira, Nádia; Costa Ferreira, Paula; Oliveira, Sofia; Veiga Simão, Ana MargaridaThis study explored how adolescents’ moral beliefs and moral disengagement explain bystander apathy in cyberbullying. Semi-structured interviews with adolescents aged 13 to 20 (n = 100, mage = 15.74, sd = 1.52, 52% boys) were conducted. Results from a thematic analysis indicated four main themes. Theme 1 suggested that although perceived as morally wrong, the severity of cyberbullying was devalued. Theme 2 high...
In vitro optimization of photobiomodulation and ultrasound stimulation protocol...
Monteiro, Francisca; Oliveira, Sofia; Marques, Carlos; Papadimitriou, Georgia; Silva, Joana M.; Padrão, Jorge; Sotiropoulos, Ioannis; Catarino, SusanaThe effectiveness of transcranial photobiomodulation (tPBM) and ultrasound stimulation (tUS) to mitigate different neuropathological mechanisms and stimulate neuroprotective responses has been vastly demonstrated in preclinical disease models. However, the translation into clinics is still suboptimal, revealing the need for more solid basic research to ascertain the most effective stimulation parameters to modu...
Development and validation of a multi-modal customized device to stimulate in v...
Oliveira, Sofia; Monteiro, Francisca Andreia Azevedo; Catarino, Susana Oliveira; Hinckel, Betina B.; Sotiropoulos, I.; Leal, Ana Isabel Neto CardosoThis work focuses on the development and validation of a multi-modal stimulation device for in vitro cell culture systems. The device was designed to stimulate cells or tissues placed on 12-well culture plates. It is connected to customized software that controls the parameters of photobiomodulation (PBM) and ultrasound stimulation (US) through light-emitting diodes and piezoelectric disks, respectively. A wide...
Perceived stress, well-being, and academic performance of university students d...
Marques-Pinto, Alexandra; Curral, Luís; Costa, Maria R.; Quadros, Francisca; Neves de Jesus, Saúl; Martínez, Isabel Maria; Roazzi, AntónioBackground/Objectives: The COVID-19 pandemic profoundly affected university students globally, exacerbating their already existing academic stress. This study investigates how the first COVID-19 lockdown (March-July 2020) differently impacted Portuguese, Spanish, and Brazilian university students' perceived academic stress, personal well-being, academic engagement, and performance. Methods: An online survey col...
Representações de idosos sobre a prática de atividade física em contexto de gin...
Oliveira, Sofia; Celestino, Tadeu; Morgado, Elsa; Pereira, Antonino Manuel de AlmeidaCom o aumento da esperança média de vida, existem cada vez mais idosos no mundo, o que está a conduzir ao envelhecimento da população mundial, sendo que o exercício físico é um elemento fundamental para a promoção da saúde e da qualidade de vida desta população. Este estudo teve como principais objetivos conhecer as representações dos indivíduos idosos acerca da prática de atividade física desenvolvida em conte...
Inteligência artificial, ética e desporto: revisão narrativa
Oliveira, Sofia; Morgado, Elsa; Silva, Levi Leonido; Pereira, Antonino Manuel de AlmeidaAtualmente, a inteligência artificial (IA) é cada vez mais utilizada em diversos contextos na sociedade. Neste sentido, também no desporto são empregues várias ferramentas que utilizam esta mesma tecnologia. Este estudo teve como principais objetivos: identificar as potencialidades da utilização da IA no desporto de alta competição para os atletas, treinadores e árbitros/juízes; e ainda compreender quais os pro...
Artificial intelligence, ethics and sports: a narrative review
Oliveira, Sofia; Morgado, Elsa; Leonido, Levi; Pereira, AntoninoArtificial intelligence (AI) is currently being increasingly utilised in various contexts within society. In this regard, several tools employing this same technology are also used in sports. This study had two main objectives: to identify the potentialities of AI usage in high-performance sports for athletes, coaches, and referees/judges, and to understand the ethical issues that its use may cause. To achieve ...
Near-infrared photobiomodulation stimulates viability and cartilage matrix synt...
Oliveira, Sofia; Ferreira, Débora Carina Gonçalves Abreu; Padrão, Jorge; Catarino, Susana Oliveira; Monteiro, Francisca Andreia Azevedo; Zille, AndreaPhotobiomodulation (PBM) within red to near-infrared spectrum has been proposed as a method to restore articular cartilage injuries, due to its ability to modulate effectively chondrocyte activity, namely viability, proliferation and extracellular matrix synthesis. This in vitro study aimed to determine the most appropriate PBM dosage on human chondrocytes. Firstly, human chondrocytes were stimulated daily or e...