Encontrados 4 documentos, a visualizar página 1 de 1
Estimation procedures affect the center of pressure frequency analysis
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 c...
Haematology, genotoxicity, enzymatic activity and histopathology as biomarkers ...
Sánchez-Chardi, A.; Marques, C. C.; Gabriel, S. I.; Capela-Silva, F.; Cabrita, A. S.; López-Fuster, M. J.; Nadal, J.; Mathias, M. L.Haematological (WBC, RBC, Hgb and Hct) and genotoxicity (MNT) parameters, hepatic enzymatic activities (GST, GPx and GR), and a histopathological evaluation of liver, kidneys and gonads were assessed as general biomarkers of metal pollution in the shrew Crocidura russula inhabiting a pyrite mining area. Specimens exposed to metals presented a few significant alterations when compared with reference animals: GST...
The effect of an aerobic training program on the electrical remodeling of the h...
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 af...
Clinical assessment of the effect of digital filtering on the detection of vent...
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...
| Financiadores do RCAAP | |||||||
|
|
|
|
|
|
||