OSCAR ALBUQUERQUE DE MORAES

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Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina
LIM/59 - Laboratório de Biologia Celular, Hospital das Clínicas, Faculdade de Medicina

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  • article 16 Citação(ões) na Scopus
    Cardiac autonomic dysfunction in chronic stroke women is attenuated after submaximal exercise test, as evaluated by linear and nonlinear analysis
    (2015) FRANCICA, Juliana Valente; BIGONGIARI, Aline; MOCHIZUKI, Luis; SCAPINI, Katia Bilhar; MORAES, Oscar Albuquerque; MOSTARDA, Cristiano; CAPERUTO, Erico Chagas; IRIGOYEN, Maria Claudia; ANGELIS, Katia De; RODRIGUES, Bruno
    Background: We evaluated cardiac autonomic modulation in women with chronic ischemic stroke (at least 4 years post-stroke) at rest and in response to submaximal exercise test. Methods: Fourteen post-stroke women (S group) and 10 healthy women (C group) participated in this study. Autonomic modulation (using linear and nonlinear analysis), blood pressure and metabolic variables at rest were evaluated immediately after the exercise test and during the recovery period (20 min). All participants underwent submaximal exercise test on cycle ergometer with gas analysis. Results: At rest, the S group displayed higher lactate concentration, systolic (SBP) and diastolic blood pressure (DBP) values when compared to C group. Furthermore, the S group had lower heart rate variability (HRV) in time domain (SDNN: S = 30 +/- 5 vs. 40 +/- 8 ms; rMSSD: S = 14 +/- 2 vs. C = 34 +/- 3 ms), decreased high frequency band of pulse interval (S = 8.4 +/- 2 vs. 33.1 +/- 9 %) and 2V pattern of symbolic analysis (S = 17.3 +/- 1 vs. 30 +/- 3 %) (both indicators of cardiac vagal modulation) when compared to C group. Immediately after exercise, S group presented higher values of lactate, SBP, DBP and double product when compared to C group, as well as decreased heart rate recovery (HRR) measured at the first, second and third minutes. At recovery time, all HRV parameters in time and frequency domains improved in the S group; however, HF band remained lower when compared to C group. Conclusions: After the exercise test, women with chronic stroke presented reduced heart rate variability, reduced cardiac vagal modulation, as well as reduced HRR, while displayed an improvement of heart rate variability and cardiac vagal modulation when compared to their baseline. These results reinforce the importance of a physically active lifestyle for cardiovascular autonomic disorders observed in chronic stroke women.
  • article 19 Citação(ões) na Scopus
    Effects of inspiratory muscle exercise in the pulmonary function, autonomic modulation, and hemodynamic variables in older women with metabolic syndrome
    (2017) FERIANI, Daniele Jardim; COELHO-JUNIOR, Helio Jose; SCAPINI, Katia Bilhar; MORAES, Oscar Albuquerque de; MOSTARDA, Cristiano; RUBERTI, Olivia Moraes; UCHIDA, Marco Carlos; CAPERUTO, Erico Chagas; IRIGOYEN, Maria Claudia; RODRIGUES, Bruno
    The aim of the present study was to investigate the effects of inspiratory muscle exercise (IME) on metabolic and hemodynamic parameters, cardiac autonomic modulation and respiratory function of older women with metabolic syndrome (MS). For this, sixteen older women with MS and 12 aged-matched controls participated of the present study. Two days before and 2 days after the main experiment, fasting blood samples (i.e., total cholesterol, triglycerides and blood glucose), cardiac autonomic modulation (i.e., heart rate variability), and respiratory muscle function were obtained and evaluated. The sessions of physical exercise was based on a IME, which was performed during 7 days. Each session of IME was performed during 20 min, at 30% of maximal static inspiratory pressure. In the results, MS group presented higher levels of triglycerides, blood glucose, and systolic blood pressure when compared to control group. IME was not able to change these variables. However, although MS group showed impaired respiratory muscle strength and function, as well as cardiac autonomic modulation, IME was able to improve these parameters. Thus, the data showed that seven days of IME are capable to improve respiratory function and cardiac autonomic modulation of older women with MS. These results indicate that IME can be a profitable therapy to counteracting the clinical markers of MS, once repeated sessions of acute IME can cause chronical alterations on respiratory function and cardiac autonomic modulation.