Complexity of autonomic nervous system function in individuals with COPD.

Objective: To evaluate autonomic modulation in individuals with COPD, compared with healthy controls, via recurrence plots (RPs) and linear heart rate variability (HRV) indices.

Methods: We analyzed data on 74 volunteers, who were divided into two groups: COPD (n = 43) and control (n = 31). For calculation of HRV indices, heart rate was measured beat-by-beat during 30 min of supine rest using a heart-rate meter.

Sensitivity, Specificity and Predictive Value of Heart Rate Variability Indices in Type 1 Diabetes Mellitus.

Background: Heart rate variability (HRV) indices may detect autonomic changes with good diagnostic accuracy. Type diabetes mellitus (DM) individuals may have changes in autonomic modulation; however, studies of this nature in this population are still scarce.

Objective: To compare HRV indices between and assess their prognostic value by measurements of sensitivity, specificity and predictive values in young individuals with type 1 DM and healthy volunteers.

Impact of obesity on autonomic modulation, heart rate and blood pressure in obese young people.

Introduction: Obesity can be understood as a comorbidity of increasing systemic impact, including a deficit in the autonomic nervous system.

Objective: To analyze cardiac autonomic behavior and hemodynamic parameters in obese young people.

Methods: 92 individuals (20.

Impact of functional training on cardiac autonomic modulation, cardiopulmonary parameters and quality of life in healthy women.

Functional training (FT) promotes benefits in various physical abilities; however, its effect on autonomic modulation, cardiorespiratory parameters and quality of life in the healthy adult population is unknown, and thus, the aim of this study was to evaluate the influence of  FT on these variables in healthy young women. The study consisted of 29 women, distributed into two groups: the FT Group (FTG; n = 13; 23 ± 2·51 years; 21·90 ± 2·82 kg m(-) ²) and the Control Group (CG; n = 16; 20·56 ± 1·03 years; 22·12 ± 3·86 kg m(-) ²). The FTG performed periodized FT for 12 weeks, three times a week.

Cardiac risk stratification in cardiac rehabilitation programs: a review of protocols.

Objective: Gather and describe general characteristics of different protocols of risk stratification for cardiac patients undergoing exercise.

Methods: We conducted searches in LILACS, IBECS, MEDLINE, Cochrane Library, and SciELO electronic databases, using the following descriptors: Cardiovascular Disease, Rehabilitation Centers, Practice Guideline, Exercise and Risk Stratification in the past 20 years.

Results: Were selected eight studies addressing methods of risk stratification in patients undergoing exercise.

HRV Analysis: A Clinical and Diagnostic Tool in Chronic Obstructive Pulmonary Disease.

This study's aim is to analyze heart rate dynamics in subjects with chronic obstructive pulmonary disease (COPD) by measures of heart rate variability (HRV). HRV is a simple and noninvasive measure of autonomic impulses. 38 adults were divided into two equal groups based on respiratory function: COPD and normal.

Influence of risk behavior aggregation in different categories of physical activity on the occurrence of cardiovascular risk factors.

Background: We aimed to verify the association of risk behavior aggregation in different categories of physical activity (PA) with the presence of cardiovascular risk factors (RF) employees at a public university.

Method: We analyzed data of 376 employees, which were visited in their workplace for measurement of weight, height and questionnaires to identify the risk behaviors and risk factors. Chi-square test was used to analyze the association between the dependent and independent variables and binary logistic regression was used to construct a multivariate model for the observed associations.

Noninvasive mechanical ventilation in the postoperative cardiac surgery period: update of the literature.

This study aimed to update knowledge regarding to noninvasive ventilation (NVI) on postoperative of cardiac surgery in addition at investigating if exists superiority of any modalities NVI in relation to the others. The literature review was performed on the period between 2006 and 2011, on PubMed, SciELO and Lilacs databases crossing the keywords: artificial respiration, continuous positive airway pressure, intermittent positive-pressure ventilation, cardiac surgery and their corresponding in English. Based on the criteria adopted, nine articles were selected being six of them use NVI, through the modalities such as continuous positive airway pressure, positive pressure with bilevel pressure and intermittent positive-pressure ventilation in postoperative of cardiac surgery; only three of them performed comparisons between different modalities.