Navegando por Assunto "Kinematics"

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    Biomechanical analysis of experimental spinal cord injury treated with photobiomodulation
    Beloni, Luís Filipe Karatanasov; Lima, Leonardo Borges; Neves, Marcele Florencio; Lima, Mario Oliveira; Lima, Fernanda Pupio Silva; Lopes-Martins, Rodrigo Alvaro Brandão; Sant’Anna, Luciana Barros; Arisawa, Emilia Angela Lo Schiavo; Ribeirão Preto
    Spinal cord injury (SCI) is a terrible condition that can affect humans. It is characterized by the interruption of the neurological signal, affecting sensorimotor functions, with social and psychological losses and high treatment costs. There is still no cure for SCI, encouraging research for new therapeu- tic approaches. In this context, Photobiomodulation (PBM) has shown promising results regarding the inflammatory, pain, im- munological, and antifibrotic response, favoring the healing process in several tissues. Objective: To evaluate the motor function in rats treated with PBM after SCI by hemisection us- ing quantitative movement analysis techniques. Methodology: 15 male rats were distributed in three groups: Control (C), In- jury (I), and Photobiomodulation (PBM, continuous wave, 780nm). Groups I and PBM were submitted to SCI between T9/T10, by hemisection of the spinal cord. The Sciatic Func- tional Index (SFI) and average speed were evaluated by kine- matic analysis of the gait of these animals for 28 days, with 7- day intervals. Results: The PBM group showed a significant in- crease in the average speed at 7, 14, and 21 experimental day times evaluated and improvement in SFI. Conclusion: The kin- ematic and thesciatic functional index analysis are reliable eval- uating tools for motor function in rats treated with PBM after SCI, showing increased gait speed and range of motion im- provement on the 14th and 21st-day post-SCI.
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    Kinematic and sensory-motor analysis of the effects of treatments with photobiomodulation in rats with experimentally induced spinal injury
    (Springer Nature Link) Beloni, Luís Filipe Karatanasov; Lima, Leonardo Borges de; Correia, Débora Campos Chaves; Mendes, Alessandro Corrêa; Sannt'Anna, Luciana Barros; Arisawa, Emilia Angela Lo Schiavo; Lima, Fernanda Pupio Silva; Lima, Mario Oliveira
    The aim of this study was to evaluate the kinematic and sensorimotor parameters after application of photobiomodula- tion (PBM) in rats with experimentally induced spinal cord injuries (SCI). The animals were randomly divided into 3 experimental groups containing 5 animals each and respecting the following arrangement: C (control, simulation of sur- gical procedures); I (injury, induction of SCI) and PBM (photobiomodulation, SCI+application of photobiomodulation therapy). All animals underwent movement tests after 3, 7, 10 and 14 days, respectively, after the surgical procedure, and the following movement parameters were evaluated: mean velocity (MV), ground reaction force (GRF) and sciatic func- tional index (SFI) using integrated equipment capable of digitally collecting the proposed data. The mean results of the MV data obtained by groups C, I and PBM were compared and a statistically significant difference was found, being: C x I (p=0.001) and I x PBM (p=0.002), respectively. Considering the SFI data obtained by groups C, I and PBM, a statisti- cally significant difference was observed when comparing C x I (p = 0.011). The mean results of the GRF data obtained by groups C, I and PBM were compared and the results showed a statistically significant difference in C x I (p=0.001), C x PBM (p=0.026) and I x PBM (p=0.002), respectively. Therefore, there was an improvement in motor function between the 7th and 14th day after SCI, represented by the increase in speed and better GRF distribution in the PBM group.