Title :
Changes in the non-linear dynamics of heart rate variability due to foot based vibration while in the seated position
Author :
Villanueva, A., Jr. ; Madhaven, G. ; McLeod, K.J.
Author_Institution :
Bioelectromagnetics Res. Lab., State Univ. of New York, Stony Brook, NY, USA
Abstract :
The objective of this study was to determine if a mechanical vibration, applied at the feet with the subject in the seated position, would influence blood flow. Ten female volunteers in the age group of 22 to 59 were tested for 20 minutes with and without vibration (37 Hz, 0.2 g). Blood pressure and continuous heart rate were recorded. Frequency analysis by FFT was used to evaluate heart rate variability (HRV). Analysis of the power spectrum over the range of 0.005-0.5 Hz showed a significant decrease in the slope with age. Vibration resulted in a significant reduction in slope, consistent with having a "younger" HRV. These results are interpreted as the vibration "improving" lower limb circulation.
Keywords :
biomechanics; blood pressure measurement; cardiology; fast Fourier transforms; frequency-domain analysis; medical signal processing; spectral analysis; 0.005 to 0.5 Hz; 20 min; 22 to 59 y; 37 Hz; FFT frequency analysis; blood flow; continuous heart rate; female volunteers; foot based vibration; heart rate variability; lower limb circulation improvement; mechanical vibration; nonlinear dynamics; power spectrum analysis; seated position; Blood flow; Blood pressure; Bones; Foot; Frequency; Heart rate; Heart rate variability; Muscles; Testing; Vibrations;
Conference_Titel :
Engineering in Medicine and Biology, 2002. 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society EMBS/BMES Conference, 2002. Proceedings of the Second Joint
Print_ISBN :
0-7803-7612-9
DOI :
10.1109/IEMBS.2002.1134350
