Mário Forjaz Secca

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We designed and built a non-invasive instrument, called Vertebral Metrics, to measure the x, y, and z positions of each spinous process of the spine on a standing position. In the present study, we perform a comparative evaluation of Vertebral Metrics, by comparing the results obtained from this instrument with those from a validated optoelectronic system(More)
OBJECTIVE The goal of the present study was to evaluate the prevalence of back pain during four different periods of pregnancy and its action on each woman during this stage. METHODS The sample comprises of a group of 49 pregnant women aged between 20 and 39 years. The presence of back pain symptoms and severity were evaluated at 12, 20, 32 and 37 weeks(More)
The aim of this work is to propose a multifractal analysis method for Multifractal Detrended Fluctuation analysis (MF-DFA) of Blood Oxygen Level Dependent (BOLD) functional Magnetic Resonance Imaging (fMRI). The fMRI signals exhibit a 1/f power spectrum, hence their structure has self-similarity and long memory, being usually successfully analyzed by(More)
OBJECTIVE To perform the cultural adaptation of the instrument Activity Record (ACTRE) and evaluate its psychometric qualities. METHOD Six steps were followed:1) translation of the original instrument, 2) back-translation, 3) formal equivalence assessment, 4) evaluation by an expert in Portuguese language, 5) final critique by experts in the field and 6 )(More)
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