The effect of thoracic manipulation on pulmonary function in swimming athletes
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2018
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Objectivo: A presente dissertação de mestrado teve como principal objetivo analisar o
efeito da manipulação da coluna torácica (MCT) na função pulmonar em atletas de
natação durante um período de 30 minutos.
Método: Numa primeira fase, foi elaborada uma revisão sistemática de literatura (RSL)
com base em estudos do tipo randomized controlled trial (RCT) e clinical trial e, numa
segunda fase, foi realizado um estudo experimental crossover com o objectivo de
analisar se existem diferenças após a realização de uma sessão de MCT durante um
período de 30 minutos em 21 atletas de natação federados divididos em dois grupos
(Intervenção vs Controlo), com idades compreendidas entre os 16 - 24 (M = 18.62 ±
2.40). Após o washout de duas semanas fez-se o crossover dos grupos.
Resultados: Na RSL foram seleccionados 4 artigos, sendo dois RCT que estudaram as
variáveis dependentes capacidade vital forçada (CVF) e volume expiratório forçado no
primeiro segundo (VEF1) e onde mostraram efeitos significativos nos dois grupos e dois
quasi-experimentais que estudaram as variáveis dependentes CVF, VEF1 e ventilação
voluntária máxima (VVM) e em que estes estudos não apresentaram diferenças
significativas comparando os dois grupos. Os resultados do estudo experimental
demonstraram que não houve diferenças significativas nas variáveis CVF e VEF1, entre
os grupos, no entanto, o mesmo não aconteceu com o VVM, em que se verificaram
valores estatísticamente significativos diminuidos.
Conclusão: Os resultados dos estudos analisados na RSL não são unânimes. Dois
estudos referem que existem efeitos benéficos na MCT, no sentido de melhorar as
funções pulmonares, mas outros dois estudos analisados não referem qualquer alteração
nestas funções. À semelhança de dois estudos da RSL, o estudo de intervenção também
não produziu nenhum efeito nas variáveis CVF e VEF1, pelo contrário, houve uma
diminuição nos valores da VVM sendo as suas diferenças significativas. É necessário
por isso, mais investigação nesta área, pois ela encontra-se limitada pela quantidade de
estudos existentes, assim como uma intervenção de maior duração com follow-up para
se poder tirar conclusões mais fidedignas.
Objective: The main objective of this master's thesis was to analyze the effect of thoracic spinal manipulation (TSM) on lung function in swimming athletes during a 30- minute period. Method: In a first phase, a systematic literature review (SLR) was developed based on randomized controlled trial (RCT) and clinical trial studies and, in a second phase, an experimental crossover study was carried out with the objective to analyze if there are differences after a 30-minute TSM session in 21 federated swimming athletes divided into two groups (Intervention vs Control), aged 16 - 24 (M = 18.62 ± 2.40). After the washout of two weeks the crossover of the groups was made. Results: In the SLR, 4 articles were selected being two RCT that studied forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) and where they did show significant results in the two groups and two quasi-experimental that studied the dependent variables FVC, FEV1 and maximal voluntary ventilation (MVV) and in which these studies did not show a significant increase comparing the two groups. The results of the experimental study showed that there were no significant differences in the FVC and FEV1 variables between the groups, however, the same did not occur with the MVV, in which there were statistically significant decreased values. Conclusion: The results of the studies analyzed in the RSL are not unanimous. Two studies reports that there are beneficial effects on TSM in the sense of improving lung function, but the other two studies analyzed do not report any change in these functions. Similarly, to two studies of RSL, the intervention study also had no effect on the FVC and FEV1 variables, on the contrary, there was a decrease in the values of the MVV being their significant differences. Therefore, more research in this area is necessary, since it is limited by the number of existing studies, as well as a longer follow-up intervention with a view to obtaining more reliable conclusions.
Objective: The main objective of this master's thesis was to analyze the effect of thoracic spinal manipulation (TSM) on lung function in swimming athletes during a 30- minute period. Method: In a first phase, a systematic literature review (SLR) was developed based on randomized controlled trial (RCT) and clinical trial studies and, in a second phase, an experimental crossover study was carried out with the objective to analyze if there are differences after a 30-minute TSM session in 21 federated swimming athletes divided into two groups (Intervention vs Control), aged 16 - 24 (M = 18.62 ± 2.40). After the washout of two weeks the crossover of the groups was made. Results: In the SLR, 4 articles were selected being two RCT that studied forced vital capacity (FVC) and forced expiratory volume in one second (FEV1) and where they did show significant results in the two groups and two quasi-experimental that studied the dependent variables FVC, FEV1 and maximal voluntary ventilation (MVV) and in which these studies did not show a significant increase comparing the two groups. The results of the experimental study showed that there were no significant differences in the FVC and FEV1 variables between the groups, however, the same did not occur with the MVV, in which there were statistically significant decreased values. Conclusion: The results of the studies analyzed in the RSL are not unanimous. Two studies reports that there are beneficial effects on TSM in the sense of improving lung function, but the other two studies analyzed do not report any change in these functions. Similarly, to two studies of RSL, the intervention study also had no effect on the FVC and FEV1 variables, on the contrary, there was a decrease in the values of the MVV being their significant differences. Therefore, more research in this area is necessary, since it is limited by the number of existing studies, as well as a longer follow-up intervention with a view to obtaining more reliable conclusions.
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Orientação: Rodrigo Ruivo
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MESTRADO EM EXERCÍCIO E BEM-ESTAR, DESPORTO, EDUCAÇÃO FÍSICA, NATAÇÃO, SPORT, PHYSICAL EDUCATION, SWIMMING, ATLETAS DE COMPETIÇÃO, PROFESSIONAL ATHLETES, TESTES DE FUNÇÃO RESPIRATÓRIA, RESPIRATORY FUNCTION TESTS