Logo do repositório

Percorrer por autor "Fonseca, Pedro"

A mostrar 1 - 2 de 2
  • 3D Analysis of the Initial and End Positions of an Active and Passive Prone Hip Extension Test and Its Correlation with Lower Limb Isokinetic Neuromuscular Function of College Students: A Pilot Study
    Publication . Lumini, José; Hedirian, Benjamin; Fonseca, Pedro; Ribeiro, Andrea; Schneider, André; Monteiro, António M.; Vilas-Boas, João Paulo
    Manual therapists routinely evaluate changes in pain, movement, and function through clinical tests that support clinical reasoning. The Prone Hip Extension Test (PHET) is commonly used as a self-perturbation task to assess lumbopelvic control and hip motion patterns related to gait. Performing the PHET actively and passively may reveal how voluntary activation and passive structures influence joint kinematics and contribute to force production. This study aimed to compare active and passive PHET execution and investigate how initial (IP) and final hip positions (FP) correlate with lower-limb neuromuscular function. Methods: Seven healthy volunteers (24.3 ± 3.4 years; 173.1 ± 7.5 cm; 72.1 ± 9.5 kg) without musculoskeletal conditions participated. Hip kinematics were recorded using a 12-camera Qualisys Oqus system (200 Hz) with 22 reflective markers, processed in Qualisys Track Manager 2.13 and exported to Visual3D. Participants performed three PHET trials in both IP and FP, with mean angles considered for analysis. Knee isokinetic performance was assessed on a Biodex System 4 at 180◦/s and 300◦/s for flexion and extension. Results: Significant differences between active and passive PHET emerged in the FP for rotational movements bilaterally (p = 0.02) and in IP adduction/abduction for both hips (right p = 0.03; left p = 0.02). No side-to-side differences were observed. Passive FP of the right hip showed multiple significant correlations with isokinetic flexion and extension parameters at 180◦/s and 300◦/s, particularly with torque/body weight, acceleration and deceleration times, and agonist/antagonist ratios (ρ ranging from −0.86 to 0.90). Conclusions: Meaningful differences exist between active and passive PHET performance, especially in frontal-plane IP and rotational FP measures. Additionally, passive FP strongly correlates with several neuromuscular variables, suggesting that PHET kinematics may reflect lower-limb isokinetic function.
    2025Artigo científico Acesso aberto Ver mais
  • Welcome message
    Publication . Lopes, Ana Cristina; Pires, Gabriel; Pinto, Vítor H.; Lima, José; Fonseca, Pedro
    Welcome to the 2023 IEEE International Conference on Autonomous Robot Systems and Competitions (ICARSC). ICARSC is an international scientific meeting in the field of Mobile Robotics financially co-sponsored by the Portuguese Robotics Society, IEEE Portugal Section and IEEE Portugal RAS Chapter and technically co-sponsored by the IEEE Robotics and Automation Society (RAS). ICARSC is currently a recognized international scientific conference in the field of autonomous robotics and competitions. This conference is promoted by Instituto Politécnico de Tomar and the Portuguese Society of Robotics, with the support from Tomar Municipality. Thank you all for participating in this conference. We hope you feel it as a highly productive and sociable event and that you will enjoy your staying in Tomar.
    2023Outro Acesso aberto Ver mais