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Efeitos imediatos da manipulação vertebral em parâmetros biomecânicos e fisiológicos
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Advisor(s)
Abstract(s)
Introdução: A manipulação vertebral (MV) tem sido teorizada como capaz de influenciar a função biomecânica vertebral e dos tecidos moles, levando a uma modulação da atividade muscular e aumento da amplitude de movimento articular. A aplicação desta em atletas pode levar a alterações biomecânicas e fisiológicas, como: amplitude de movimento torácico (ADM), senso de posição articular (SPA), frequência cardíaca (FC) e saturação parcial de oxigénio (SatO2). O objetivo deste estudo foi investigar quais os benefícios da manipulação vertebral nos jogadores de andebol.
Metodologia: Participaram do estudo 20 indivíduos do sexo feminino, sendo 13 atletas de andebol e 7 não-atletas. As participantes foram distribuídas aleatóriamente em 2 grupos, intervenção e placebo, sendo submetidas à manipulação vertebral de T4 e a uma técnica de MV placebo, respetivamente. Os parâmetros biomecânicos e fisiológicos foram avaliados antes e após a manipulação.
Principais resultados: No presente estudo foi encontrada uma diminuição na FC tanto no grupo placebo quanto no grupo intervenção, principalmente quando comparadas as variáveis M0 (antes da MV) e M3 (2 minutos após a MV. Na SatO2 não se verificaram alterações significativas ao comparar os diferentes momentos de avaliação, em nenhum dos grupos em estudo. Na ADM dorsal na comparação grupo placebo x intervenção depois da MV houve alterações estatisticamente significativas. Em relação ao SPA a 60º após a intervenção houve aumento do EA (erro absoluto) e ER (erro relativo) no grupo placebo, e no grupo intervenção houve aumento do EA, ER e EV (erro variável). No grupo Placebo os valores de ER a 120º são significativamente mais elevados DM (depois da manipulação) do que AM (antes da manipulação). No grupo intervenção as diferenças não são estatisticamente significativas a 120º.
Conclusão: No presente estudo não confirmamos as hipóteses previamente elencadas. As variáveis pesquisadas não seguiram o padrão de excitação do SNS. Novos estudos avaliando o controle neuromotor e cinemática segmentar da coluna, podem ajudar a esclarecer como a MV contribuirá para melhoria da performance atlética.
Introduction: Vertebral manipulation (VM) has been theorized as capable of influencing vertebral biomechanical and soft tissue function, leading to a modulation of muscle activity and increased range of joint movement. The application of this in athletes can lead to biomechanical and physiological changes, such as: thoracic range of motion (ROM), position sense joint (PSJ), heart rate (HR) and partial oxygen saturation (SatO2). The aim of the study was to investigate the benefits of spinal manipulation in handball players. Methodology: Twenty female individuals participated in the study, 13 handball athletes and 7 non-athletes. Participants were randomly distributed into 2 groups, intervention and placebo, and underwent spinal manipulation of T4 and a placebo VM technique, respectively. Biomechanical and physiological parameters were evaluated before and after manipulation. Main results: In the present study, a decrease in HR was found both in the placebo group and in the intervention group, especially when comparing the variables M0 (before VM) and M3 (2 minutes after VM). In SatO2 there were no significant changes when comparing the different moments of evaluation, in none of the study groups. In the dorsal ROM, when comparing placebo group x intervention after VM, there were statistically significant changes. In relation to PSJ at 60º after the intervention, there was an increase in AE (absolute error) and RE (relative error) in the placebo group, and in the intervention group there was an increase in AE, RE and VE (variable error). In the Placebo group the RE values at 120º are significantly higher AM (after manipulation) than BM (before manipulation). Intervention group the differences are not statistically significant at 120º. Conclusion: In the present study, we do not confirm the hypotheses previously listed. The studied variables did not follow the SNS excitation pattern. New studies evaluating neuromotor control and spinal segmental kinematics may help to clarify how VM will contribute to improved athletic performance.
Introduction: Vertebral manipulation (VM) has been theorized as capable of influencing vertebral biomechanical and soft tissue function, leading to a modulation of muscle activity and increased range of joint movement. The application of this in athletes can lead to biomechanical and physiological changes, such as: thoracic range of motion (ROM), position sense joint (PSJ), heart rate (HR) and partial oxygen saturation (SatO2). The aim of the study was to investigate the benefits of spinal manipulation in handball players. Methodology: Twenty female individuals participated in the study, 13 handball athletes and 7 non-athletes. Participants were randomly distributed into 2 groups, intervention and placebo, and underwent spinal manipulation of T4 and a placebo VM technique, respectively. Biomechanical and physiological parameters were evaluated before and after manipulation. Main results: In the present study, a decrease in HR was found both in the placebo group and in the intervention group, especially when comparing the variables M0 (before VM) and M3 (2 minutes after VM). In SatO2 there were no significant changes when comparing the different moments of evaluation, in none of the study groups. In the dorsal ROM, when comparing placebo group x intervention after VM, there were statistically significant changes. In relation to PSJ at 60º after the intervention, there was an increase in AE (absolute error) and RE (relative error) in the placebo group, and in the intervention group there was an increase in AE, RE and VE (variable error). In the Placebo group the RE values at 120º are significantly higher AM (after manipulation) than BM (before manipulation). Intervention group the differences are not statistically significant at 120º. Conclusion: In the present study, we do not confirm the hypotheses previously listed. The studied variables did not follow the SNS excitation pattern. New studies evaluating neuromotor control and spinal segmental kinematics may help to clarify how VM will contribute to improved athletic performance.
Description
Mestrado em Fisioterapia, ramo de Fisioterapia Desportiva
Keywords
Manipulação vertebral Coluna torácica (dorsal) Andebol Senso de posição articular Amplitude de movimento Frequência cardíaca Saturação parcial de oxigénio Spine manipulation Thoracic spine Handball Joint position sense Range of movement Heart rate Partial oxygen saturation