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Percorrer por autor "Guedes, Diana"

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  • Electromyographic assessment of agonist and antagonist muscles related to the anterior cruciate ligament following surgical reconstruction: A cross-sectional study
    Publication . Paredes, Ricardo; Pereira, Soraia; Crasto, Carlos; Guedes, Diana; Montes, António Mesquita; Alves, Leonel; Arias-Buría, José L.; C. Guedes, Diana; Mesquita Montes, António
    Following anterior cruciate ligament reconstruction (ACLR), neuromuscular control alterations may persist, increasing the risk of reinjury. This study aimed to investigate electromyographic (EMG) muscle activation and the co-contraction index (CCI) of ACL-related agonist and antagonist muscles during side- hop tasks in ACLR individuals, offering novel insights into neuromuscular strategies during dynamic tasks. A cross-sectional study was conducted with 15 ACLR individuals and 15 participants without ACL injury (N-ACLR). Participants performed side-hop tasks while kinematic, kinetic, and EMG data were recorded during the preparatory and loading phases. Statistical analyses were performed at a 95 % confidence level. During ipsilateral side hops, ACLR individuals exhibited higher semitendinosus (ST) activity in the initial contact (IC) and risk phases and increased quadriceps:hamstrings (Q:H) CCI in the risk phase compared to N-ACLR (p < 0.05). In contralateral side hops, ACLR individuals demonstrated higher Q:H CCI in the preparatory phase and higher vastus lateralis:biceps femoris (VL:BF) CCI in the IC and risk phases (p < 0.05). ACLR individuals display altered neuromuscular strategies during side-hop tasks compared to N-ACLR, highlighting adaptations in muscle activation and co-contraction patterns.
    2025-10Artigo científico Acesso embargado Ver mais
  • Understanding wearable health technology use in older adults through social and psychological factors
    Publication . Félix, José; Moreira, Juliana; Pereira, Soraia; Guedes, Diana; Sá, Catarina; Santos, Rubim; Faria, Brígida; Kontio, Elina; Pinheiro, Ana Rita; Sousa, Andreia S. P.; Pinheiro de Sousa, Andreia Sofia; Faria, Brigida Monica; Rubim Silva Santos, Manuel; Sousa Félix, José Manuel; Santos Moreira, Juliana; C. Guedes, Diana; Pinheiro, Ana Rita
    As populations age globally, wearable health technologies offer promising solutions to support autonomy and well-being among older adults. This study explored the adoption of smart wearable systems, such as wristbands and chest sensors, for remote health monitoring among 352 older adults (aged 60–99) in Northern Portugal. Results showed that 74.4% of participants expressed interest in using wearable systems, with safety (93.9%) cited as the main benefit. Prevention (11.4%) and improved health monitoring (6.1%) were reported less frequently and should be considered secondary factors. However, barriers included discomfort (62.7%), heaviness (31.1%), and device size (32.7%), particularly in smartwatches. Chest bands were preferred when soft, lightweight, and discreet. Technology use frequency, especially smartphone usage, emerged as a key predictor of interest, as confirmed by a decision tree machine learning model with an accuracy of 71.88%. Despite low educational levels, participants demonstrated high motivation to use features such as medication reminders (83.5%), healthy habit prompts (74.2%), and appointment alerts (70.2%). Although many respondents felt reassured by the potential of continuous monitoring, some reported concerns related to anxiety (54.9%) and over-surveillance. These findings underscore the importance of balancing technological functionality with emotional comfort. The study highlights the need for user-centered design, digital literacy initiatives, and co-creation with older users to improve adherence and usability. Tailored interventions and accessible technologies can enhance health outcomes and promote independent living among aging populations.
    2026-01-05Artigo de investigação Acesso aberto Ver mais