| Autor: |
Alicen A. Whitaker, Eric D. Vidoni, Robert N. Montgomery, Kailee Carter, Katelyn Struckle, Sandra A. Billinger |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Physiological Reports, Vol 11, Iss 11, Pp n/a-n/a (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2051-817X |
| DOI: |
10.14814/phy2.15750 |
| Popis: |
Abstract Current methods estimate the time delay (TD) before the onset of dynamic cerebral autoregulation (dCA) from verbal command to stand. A force sensor used during a sit‐to‐stand dCA measure provides an objective moment an individual stands (arise‐and‐off, AO). We hypothesized that the detection of AO would improve the accuracy of TD compared with estimation. We measured middle cerebral artery blood velocity (MCAv) and mean arterial pressure (MAP) for 60 s sitting followed by 2‐min standing, three times separated by 20 min. TD was calculated as the time from: (1) verbal command and (2) AO, until an increase in cerebrovascular conductance index (CVCi = MCAv/MAP). Sixty‐five participants were enrolled: young adults (n = 25), older adults (n = 20), and individuals post‐stroke (n = 20). The TD calculated from AO (x¯ = 2.98 ± 1.64 s) was shorter than TD estimated from verbal command (x¯ = 3.35 ± 1.72 s, η2 = 0.49, p |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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