Carlos Marcelo Pastre

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The aim of the present study was to compare heart rate variability (HRV) at rest and during exercise using a temporal series obtained with the Polar S810i monitor and a signal from a LYNX(R) signal conditioner (BIO EMG 1000 model) with a channel configured for the acquisition of ECG signals. Fifteen healthy subjects aged 20.9 +/- 1.4 years were analyzed.(More)
Autonomic nervous system (ANS) plays an important role in the regulation of the physiological processes of the human organism during normal and pathological conditions. Among the techniques used in its evaluation, the heart rate variability (HRV) has arising as a simple and non-invasive measure of the autonomic impulses, representing one of the most(More)
BACKGROUND Obesity causes changes in cardiac autonomic modulation. OBJECTIVE To investigate the autonomic modulation of eutrophic and obese children by means of indexes of heart rate variability (HRV) obtained through geometric methods. METHODS We analyzed data from 133 children aged 8 to 13, divided into two groups: obese (n = 61) and eutrophic (n =(More)
The aim of the present study was to investigate the potential benefits of cold water immersion (CWI) and active recovery (AR) on blood lactate concentration ([Lac]) and heart rate variability (HRV) indices following high-intensity exercise. 20 male subjects were recruited. On the first visit, an incremental test was performed to determine maximal oxygen(More)
PURPOSE To analyse the temporal sequence of recovery events related to autonomic nervous system and metabolic processes following maximal exercise, applying linear and nonlinear indices of heart rate variability (HRV) and blood lactate concentration. METHODS On the following day of the maximum oxygen consumption test, 20 participants firstly lay down for(More)
Background: The forced vital capacity (FVC) test is routinely performed to evaluate pulmonary function in patients with chronic obstructive pulmonary disease (COPD). However, the influence of the FVC maneuver on the cardiovascular system of patients with COPD is poorly understood. Objectives: To analyze the behavior of heart rate (HR), blood pressure (BP)(More)
OBJECTIVE The aim of the present study was to identify risk factors for the occurrence of sport injuries in dancers related to anthropometric variables, training, and specific dance characteristics. DESIGN One-year, retrospective, cross-sectional study. SETTING 26th Dance Festival of Joinville (Brazil), 2008. PARTICIPANTS Five hundred dancers (409(More)
INTRODUCTION Obesity causes alterations in cardiac autonomic function. However, there are scarce and conflicting data on this function with regard to heart rate variability in obese children. OBJECTIVE To compare the autonomic function of obese and eutrophic children by analyzing heart rate variability. METHODS One hundred twenty-one children (57 male(More)
UNLABELLED BACKGROUND With prolonged physical activity, it is important to maintain adequate fluid balance. The impact of consuming isotonic drinks during and after exercise on the autonomic regulation of cardiac function is unclear. This study aimed to analyze the effects of consuming an isotonic drink on heart rate variability (HRV) during and after(More)
The Polar® RS800G3™ rate monitor was released in the market to replace the Polar® S810i™, and few studies have assessed that the RR series obtained by this equipment is reliable for analysis of heart rate variability (HRV). We compared HRV indexes among the devices Polar® RS800G3™, Polar® S810i™ and eletrocardiogram (ECG) to know whether the series of(More)