Cardiac Autonomic Modulation and the Kinetics of Heart Rate Responses in the On- and Off-Transient during Exercise in Women with Metabolic Syndrome

• DOI: 10.3389/fphys.2017.00542
• Publication Date: 2017-07-26T04:03:23Z
• Authors: Lucas R. B. E. Silva; Antonio R. Zamunér; Paulo Gentil; Fagner M. Alves; Acácia G. F. Leal; Viviane Soares; Maria S. Silva; Marcus F. Vieira; Karina Simões; Gustavo R. Pedrino; Ana C. S. Rebelo
• Keywords: Aerobic Exercise

Objective: To test whether women with metabolic syndrome (MS) have impairments in the on- and off-transients during an incremental to study any of MS components are independently associated observed responses. Research Design Methods: Thirty-six aged 35 55 years were divided into a group (MSG, n = 19) control (CG, 17). R-R intervals (RRi) heart rate variability (HRV) calculated on beat-to-beat basis (HR) at off-transient analyzed cardiopulmonary exercise (CPET). Results: MSG showed lower aerobic capacity parasympathetic cardiac modulation rest compared CG. HR values on-transient phase significantly The exponential amplitudes "amp" parameters "τ" [speed recovery (HRR)] MSG. exhibited higher comparison CG indicating slower HRR. In MSG, there was inverse significant correlation between fasting plasma vs ΔF glucose HRR dynamics. Conclusion: is poor kinetics. altered kinetics seems be related alterations modulation, metabolism major determinant.