Purpose: Heart rate variability (HRV) is acknowledged as a useful tool to estimate autonomic function. Fast Fourier transform (FFT) and autoregressive model (AR) are used for power spectral analysis of HRV. However, there is little evidence of agreement between FFT and AR in relation to HRV following food intake in females. In the present study, we applied both FFT and AR after food intake duri...

OBJECTIVES The purpose of this study was to determine the predictors of aortic regurgitation (AR) after transcatheter aortic valve implantation (TAVI). BACKGROUND TAVI has been associated with a high rate of paravalvular regurgitation, usually mild. Nevertheless, moderate to severe regurgitations still occur and may have negative clinical consequences. METHODS Fifty patients with severe aor...

Differences between spectral estimation techniques using fast Fourier transform (FFT), autoregressive modelling (AR) and Lomp-Scargle periodogram (LSP) with respect to the impact of metronomic breathing on sympathovagal balance were investigated by calculating heart rate variability frequency domain LF/HF ratio for 25 subjects under paced respiration. All techniques showed a significant increas...

Virtual and augmented reality (VR, AR) systems present 3D images that users can interact with using controllers or gestures. The design of the user input process is crucial determines interactive efficiency, comfort, adoption. Gesture-based provides a device-free interaction may improve safety creativity compared to hand controller while allowing hands perform other tasks. Microgestures small f...

Insect wing shapes are diverse and a renowned source of inspiration for the new generation of autonomous flapping vehicles, yet the aerodynamic consequences of varying geometry is not well understood. One of the most defining and aerodynamically significant measures of wing shape is the aspect ratio, defined as the ratio of wing length (R) to mean wing chord (c). We investigated the impact of a...

nonspecific activity-related arm pain is characterized by an absence of objective physical findings and symptoms that do not correspond with objective pathophysiology. arm pain without strict diagnosis is often related to activity, work-related activity in particular, and is often seen in patients with physically demanding work. psychological factors such as catastrophic thinking, symptoms of d...

PURPOSE To investigate the clinical and morphological characteristics in relation to risk of bifurcation intracranial aneurysm rupture. MATERIALS AND METHODS Data from 202 consecutive patients with 219 bifurcation aneurysms (129 ruptured and 90 unruptured) managed at the authors' facility between August 2011 and July 2014 were retrospectively reviewed. Based on their clinical records and CT a...