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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Baselli, G. Misani, M. Cerutti, S. Porta, A. Dalla Vecchia, L. Lucini, D. Pagani, M. |
| Copyright Year | 2001 |
| Description | Author affiliation: Dept. of Biomed. Eng., Polytech. Univ. of Milan, Italy (Baselli, G.; Misani, M.; Cerutti, S.) |
| Abstract | The beat-by-beat variability of heart period (RR), systolic arterial pressure (SAP), diastolic arterial pressure (DAP) and skin microvascular conductance (G) in the palmar region of 23 healthy volunteers were analyzed during rest (R), clinostatic exercise at 10% maximum level (EXE1), 20% (EXE2) 30% (EXE3) and recovery (REC). G was obtained as the ratio between mean flow (laser Doppler) over one heart period and mean arterial pressure (Finapres). Exercise was accompanied by tachycardia, hypertension and skin vasoconstriction. Spectral analysis revealed an activation of the low frequency (LF, -0.1 Hz) in RR and SAP during EXE2 and EXE3. Recovery reestablished basal conditions in this regard. Vasomotor activity appeared as a LF component in G shifted at a lower frequency (-0.7 Hz at R). At R SAP and DAP appeared pulled toward the vasomotor frequency compared to RR and this frequency change appeared to be enhanced by exercise. Conversely, during REC and uncoupling between systemic LF and vasomotor waves appeared. A comparison between the LF waves observed at the levels of heart, arteries and microcirculation appears a key element in understanding the role of vasomotion in the autonomic control of circulation and its responses to exercise. |
| Starting Page | 534 |
| Ending Page | 536 |
| File Size | 236699 |
| Page Count | 3 |
| File Format | |
| ISBN | 0780372115 |
| ISSN | 1094687X |
| DOI | 10.1109/IEMBS.2001.1018987 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2001-10-25 |
| Publisher Place | Turkey |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Skin Blood flow Blood pressure Frequency Heart Digital audio players Cardiology Pressure measurement Biomedical engineering Hospitals |
| Content Type | Text |
| Resource Type | Article |
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