Análise da variabilidade e cinética da frequência cardíaca a partir do teste de esforço cardiopulmonar em mulheres com síndrome metabólica: estudo transversal

Detalhes bibliográficos
Ano de defesa: 2017
Autor(a) principal: Silva, Lucas Raphael Bento e lattes
Orientador(a): Rebelo, Ana Cristina Silva lattes
Banca de defesa: Rebelo, Ana Cristina Silva lattes, Baptista, Tadeu João Ribeiro, Gentil, Paulo Roberto Viana, Silva, Maria Sebastiana
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Goiás
Programa de Pós-Graduação: Programa de Pós-graduação em Ciências da Saúde (FM)
Departamento: Faculdade de Medicina - FM (RG)
País: Brasil
Palavras-chave em Português:
Palavras-chave em Inglês:
Área do conhecimento CNPq:
Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tede/7139
Resumo: Introduction: Metabolic Syndrome (MS) is a metabolic disorder that offers increased risk for cardiovascular diseases. The analysis of heart rate (HR) kinetics during exercise and its variability (HRV) is an important tool in assessing neurocardial integrity. A slow response of the HR at the end of the exercise corresponds to a low performance of the parasympathetic activity. Objective: To compare HR variability at rest and HR kinetics during exerciserecovery (phase-off), post exercise exercise in women with and without MS. Methodology: A cross-sectional study was carried out with 36 women (35-55 years of age), divided into two groups: SM group (GMS, n = 19) and non-SM group (GNMS, n = 17). The volunteers were submitted to the Bruce type limiting cardiopulmonary stress test, and for the evaluation of the HRV at rest, the R-R intervals were captured during 12 minutes in the seated position. The KomolgorovSmirnov test was used to verify the normality of the data and to evaluate the difference between two independent groups the t-Test was used for independent samples or Mann-Whitney test, multivariate analysis (MANOVA), multiple linear regression and Test Of Chi-square. The level of significance was set at 5%. Results: There was a statistically significant difference between the groups in the exponential component (p < 0.005) in the GNSM group and in the "τ" component (p = 0.032), being higher in the GSM group. There was no statistically significant difference in the parameter "FCpico." The GNSM group presented higher HR deltas compared to the SM group in the Δ60, Δ105 and Δ120 groups. GSM presented lower values in the parasympathetic modulation indices when compared to the SP group. GNSM, in contrast to a low correlation between glycemia and the highest values of the exponential component "τ", which showed a negative relation with the CC and BMI variables. Conclusion: The volunteers with MS presented autonomic dysfunction with compromised cardiac-parasympathetic modulation attributed to changes in the glycemic state. The exponential and linear analysis of FCoF can provide us with a sensitive and anticipated indicator of health impairments, proving to be useful to identify changes in cardiac autonomic control in the recovery of physical exercise.