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	Provedor de dados BJMBR (3) Autor Nadal,J. (3) Benchimol-Barbosa,P.R. (2) Barbosa,E.C. (1) Bomfim,A.S. (1) Ginefra,P. (1) Marocolo,M. (1) Oliveira,L.F. (1) Vieira,T.M.M. (1) Mais... Palavra-chave Center of pressure (1) Digital filtering (1) Estimators (1) Health technology assessment (1) High resolution electrocardiogram (1) Long-distance runners (1) Mathematical model (1) Maximal aerobic power (1) Median frequency (1) Quiet standing (1) Signal-averaged electrocardiogram (1) Spectral analysis (1) Mais... Tipo do documento Info:eu-repo/semantics/article (3) Ano 2009 (1) 2007 (1) 2002 (1) País Brazil (3) Idioma Inglês (3)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última The effect of an aerobic training program on the electrical remodeling of the heart: high-frequency components of the signal-averaged electrocardiogram are predictors of the maximal aerobic power BJMBR Marocolo,M.; Nadal,J.; Benchimol-Barbosa,P.R.. Increased heart rate variability (HRV) and high-frequency content of the terminal region of the ventricular activation of signal-averaged ECG (SAECG) have been reported in athletes. The present study investigates HRV and SAECG parameters as predictors of maximal aerobic power (VO2max) in athletes. HRV, SAECG and VO2max were determined in 18 high-performance long-distance (25 ± 6 years; 17 males) runners 24 h after a training session. Clinical visits, ECG and VO2max determination were scheduled for all athletes during thew training period. A group of 18 untrained healthy volunteers matched for age, gender, and body surface area was included as controls. SAECG was acquired in the resting supine position for 15 min and processed to extract average RR interval... Tipo: Info:eu-repo/semantics/article Palavras-chave: Long-distance runners; Signal-averaged electrocardiogram; Maximal aerobic power; Mathematical model. Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000200006 Estimation procedures affect the center of pressure frequency analysis BJMBR Vieira,T.M.M.; Oliveira,L.F.; Nadal,J.. Even though frequency analysis of body sway is widely applied in clinical studies, the lack of standardized procedures concerning power spectrum estimation may provide unreliable descriptors. Stabilometric tests were applied to 35 subjects (20-51 years, 54-95 kg, 1.6-1.9 m) and the power spectral density function was estimated for the anterior-posterior center of pressure time series. The median frequency was compared between power spectra estimated according to signal partitioning, sampling rate, test duration, and detrending methods. The median frequency reliability for different test durations was assessed using the intraclass correlation coefficient. When increasing number of segments, shortening test duration or applying linear detrending, the median... Tipo: Info:eu-repo/semantics/article Palavras-chave: Center of pressure; Spectral analysis; Quiet standing; Estimators; Median frequency. Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009000700012 Clinical assessment of the effect of digital filtering on the detection of ventricular late potentials BJMBR Benchimol-Barbosa,P.R.; Barbosa,E.C.; Bomfim,A.S.; Ginefra,P.; Nadal,J.. Ventricular late potentials are low-amplitude signals originating from damaged myocardium and detected on the body surface by ECG filtering and averaging. Digital filters present in commercial equipment may interfere with the ability of arrhythmia stratification. We compared 40-Hz BiSpec (BI) and classical 40- to 250-Hz band-pass Butterworth bidirectional (BD) filters in terms of impact on time domain variables and diagnostic properties. In a transverse retrospective age-adjusted case-control study, 221 subjects with sinus rhythm without bundle branch block were divided into three groups after signal-averaged ECG acquisition: GI (N = 40), clinically normal controls, GII (N = 158), subjects with coronary heart disease without sustained monomorphic... Tipo: Info:eu-repo/semantics/article Palavras-chave: High resolution electrocardiogram; Digital filtering; Health technology assessment. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002001100005 Registros recuperados: 3 Primeira ... 1 ... Última

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