A resistência do fluxo inspiratório modifica a intensidade de uma sessão de pilates? / Does inspiratory flow resistance modify the intensity of a pilates session?

INTRODUÇÃO: As evidências sobre a melhora da capacidade funcional utilizando o Método Pilates não são contundentes. Uma possibilidade de melhorar o efeito de uma sessão de Pilates sobre a capacidade cardiorrespiratória de seus praticantes é utilizar a resistência de fluxo inspiratório (RFI) de forma concomitante. Esse efeito pode ser visualizado através da determinação do limiar glicêmico (LG), técnica utilizada como marcador de intensidade do exercício. OBJETIVO: Testar a hipótese de que a utilização de RFI em uma sessão de pilates antecipa o LG. MÉTODOS: Estudo crossover de corte transversal. Foram avaliados 26 indivíduos de ambos os sexos, sendo 10 do sexo masculino, sadios e com idade entre 20 e 40 anos. Os voluntários foram randomizados para dois protocolos: Protocolo RFI ­ 11 movimentos do Método Pilates com RFI utilizando 20% da pressão inspiratória máxima; e Protocolo sem RFI (SRFI) ­ 11 movimentos do Método Pilates sem RFI. Os dois protocolos foram realizados no mesmo dia, sendo um pela manhã e outro à tarde, conforme randomização feita por sorteio aleatório simples. No repouso e ao final de cada movimento coletas de sangue capilar foram realizadas para dosagem da glicemia e construção da curva glicêmica. O LG foi determinado no menor ponto da curva. RESULTADOS: O LG foi antecipado no protocolo que utilizou RFI, ou seja, no protocolo com RFI o LG foi visualizado no sexto exercício, enquanto no protocolo SRFI o LG foi visualizado no nono exercício (p<0,05). CONCLUSÃO: A RFI antecipou o LG, o que sugere que a RFI aumenta a intensidade de uma sessão de pilates. Isso aventa a hipótese de que a RFI pode proporcionar a médio e longo prazo benefícios adicionais aos praticantes do Método Pilates.

INTRODUCTION: The evidence on the improvement of functional capacity using the Pilates Method is not conclusive. One possibility to improve the effect of a Pilates session on the cardiorespiratory capacity of its practitioners is to use the inspiratory flow resistance (IFR) concomitantly. This effect can be visualized by determining the glycemic threshold (GT), a technique used as an exercise intensity marker. OBJECTIVE: To test the hypothesis that the use of IFR in a Pilates session anticipates GT. METHODS: Cross-sectional crossover study. A total of 26 individuals of both genders were evaluated, 10 of whom were male, healthy, and aged between 20 and 40 years. The volunteers were randomized to two protocols: Protocol IFR - Eleven movements of the Pilates method with IFR using 20% of the maximum inspiratory pressure, and Protocol no IFR (NIFR) - Eleven movements of the Pilates method without IFR. The two protocols were performed on the same day, one in the morning and the other in the afternoon, according to randomization by simple random draw. At rest and at the end of each movement, capillary blood collections were performed to measure blood glucose and construct the glycemic curve. GT was determined at the smallest point on the curve. RESULTS: The GT was anticipated in the protocol that used IFR; that is, in the protocol with IFR, the GT was visualized in the sixth exercise, while in the NIFR protocol, the GT was visualized in the ninth exercise (p<0.05). CONCLUSION: IFR anticipated GT, which suggests that IFR increases the intensity of a Pilates session. This suggests the hypothesis that IFR can provide additional medium and long-term benefits to Pilates method practitioners.

Physical exercise in sickle cell anemia: a systematic review

Introduction and objective: Sickle cell anemia (SCA) is a genetic condition that alters the conformation of deoxygenated red blood cells, which results in their stiffening and the occurrence of vaso-occlusive crises, endothelium damage, organ dysfunction and systemic complications. Additionally, SCA limits the participation of individuals in physical and social activities. As we consider that physical exercise promotes the recovery of functional capacity and cardiorespiratory conditioning, we aim to verify the patterns of prescription, the effects and safety of exercise for individuals with SCA. Methodology: We systematically reviewed the published literature focusing on clinical trials that correlated physical exercise with SCA patients and cross-sectional studies that applied the stress test. The data research was based on the PRISMA recommendations and the following databases were used: Medline by PubMed, Cochrane, PEDro, Scielo. Results: Six studies which were based on the evaluation of 212 patients aged between 13 and 40 years, were selected from 122 identified studies. Those studies associated the individual effort tolerance improvement, its inflammatory profile adjustment and the absence of alteration in the autonomic nervous system activity to physical exercise or stress test. Conclusion: Low-to-moderate intensity physical exercise increased the SCA individual tolerance without causing vaso-occlusive crises, nor changes in the hemorheological and inflammatory profiles.

Blood glucose threshold of the inspiratory muscles: is it possible to determine it by Borg? / Umbral de glucosa en sangre de los músculos inspiratorios: ¿es posible determinarlo por Borg? / Limiar glicêmico dos músculos inspiratórios: é possivel determiná-lo pelo Borg?

Objective: To test the hypothesis that it is possible to estimate the glycemic threshold (GT) of inspiratory muscles using the subjective perception scale to Borg's effort.Methods: Observational association and cross-sectional study, in which 21 male individuals, eutrophic, irregularly active, aged between 18 and 30 years evaluated. All submitted to an incremental inspiratory muscle test to determine the GT. During the test, the traditional Borg scale was applied at each stage of the test. Pearson's test was used to verify the correlation between GT and Borg.Results: A descriptive analysis that GT occurred 23±9.1% of MIP in an absolute load of 32±14.6cmH2O and was compatible with the score of 13±1.5 on the BORG scale (r=0.67) and (r=0.58) respectively.Conclusions: Our results provide evidence that the Borg scale is a viable method to determine the GT of inspiratory muscles and consequently be used for prescribing Inspiratory Muscle Training. (AU)

Objetivo: Probar la hipótesis de que es posible estimar el umbral glucémico (UG) de los músculos inspiratorios utilizando la escala de percepción subjetiva al esfuerzo de Borg.Métodos: asociación observacional y estudio transversal, en el que se evaluaron 21 individuos del sexo masculino, eutróficos, irregularmente activos, con edades comprendidas entre 18 y 30 años. Todos sometidos a una prueba de músculo inspiratorio incremental para determinar el UG. Durante la prueba, se aplicó la escala de Borg tradicional en cada etapa de la prueba. Se utilizó la prueba de Pearson para verificar la correlación entre UG y Borg.Resultados: Un análisis descriptivo que UG ocurrió 23 ± 9.1% de MIP en una carga absoluta de 32 ± 14.6cmH2O y fue compatible con la puntuación de 13±1.5 en la escala BORG (r=0.67) y (r=0.58) respectivamente. .Conclusiones: Nuestros resultados proporcionan evidencia de que la escala de Borg es un método viable para determinar el UG de los músculos inspiratorios y, en consecuencia, se puede utilizar para prescribir el entrenamiento de los músculos inspiratorios. (AU)

Objetivo: Testar a hipótese de que é possível estimar o LG dos músculos inspiratórios, por meio da escala de percepção subjetiva ao esforço de Borg.Métodos: Estudo observacional de associação e corte transversal, no qual foram avaliados 21 indivíduos do sexo masculino, eutróficos, irregularmente ativos, com idades entre 18 e 30 anos. Todos foram submetidos a um teste muscular inspiratório incremental para determinação do LG. Durante o teste foi aplicado a escala de Borg tradicional em cada estágio do teste. Para análise descritiva foi utilizado a média e desvio padrão por se tratar de uma amostra linear. Utilizado o teste de Pearson para verificar a correlação entre o LG e o Borg.Resultados: A análise descritiva mostrou que o LG ocorreu 23±9,1% da PImáx em uma carga absoluta de 32±14,6cmH2O e foi compatível com o escore de 13±1,5 da escala de BORG (r=0,67) e (r=0,58) respectivamente.Conclusões: Nossos resultados fornecem evidências de que a escala de Borg é um método viável para determinar o Limiar Glicêmico dos músculos inspiratórios e consequentemente ser utilizado para prescrição do Treinamento Muscular Inspiratório. (AU)

Physical exercise in sickle cell anemia: a systematic review.

INTRODUCTION AND OBJECTIVE: Sickle cell anemia (SCA) is a genetic condition that alters the conformation of deoxygenated red blood cells, which results in their stiffening and the occurrence of vaso-occlusive crises, endothelium damage, organ dysfunction and systemic complications. Additionally, SCA limits the participation of individuals in physical and social activities. As we consider that physical exercise promotes the recovery of functional capacity and cardiorespiratory conditioning, we aim to verify the patterns of prescription, the effects and safety of exercise for individuals with SCA. METHODOLOGY: We systematically reviewed the published literature focusing on clinical trials that correlated physical exercise with SCA patients and cross-sectional studies that applied the stress test. The data research was based on the PRISMA recommendations and the following databases were used: Medline by PubMed, Cochrane, PEDro, Scielo. RESULTS: Six studies which were based on the evaluation of 212 patients aged between 13 and 40 years, were selected from 122 identified studies. Those studies associated the individual effort tolerance improvement, its inflammatory profile adjustment and the absence of alteration in the autonomic nervous system activity to physical exercise or stress test. CONCLUSION: Low-to-moderate intensity physical exercise increased the SCA individual tolerance without causing vaso-occlusive crises, nor changes in the hemorheological and inflammatory profiles.