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Evaluating transient phenomena by wavelet analysis : early recovery to exerciseKralj, Lana, 1993- ; Potočnik, Nejka ; Lenasi, Helena, 1971-Wavelet analysis (WA) provides superior time-frequency decomposition of complex signals than conventional spectral analysis tools. To illustrate its usefulness in assessing transient phenomena, we ... applied a custom-developed WA algorithm to laser Doppler (LD) signals of the cutaneous microcirculation measured at glabrous (finger pulp) and nonglabrous (forearm) sites during early recovery after dynamic exercise. This phase, importantly contributing to the establishment of thermal homeostasis after exercise cessation, has not been adequately explored because of its complex, transient form. Using WA, we decomposed the LD signals measured during the baseline and early recovery into power spectra of characteristic frequency intervals corresponding to endothelial nitric oxide (NO)-dependent, neurogenic, myogenic, respiratory, and cardiac physiological influence. Assessment of relative power (RP), defined as the ratio between the median power in the frequency interval and the median power of the total spectrum, revealed that endothelial NO-dependent (5.87 early recovery; 1.53 baseline) (p=0.005; Wilcoxon signed-rank test) and respiratory (0.71 early recovery; 0.40 baseline) (p=0.001) components were significantly increased, and myogenic component (1.35 early recovery; 1.83 baseline) (p=0.02) significantly decreased during early recovery in the finger pulp. In the forearm, only the RP of the endothelial NO-dependent (1.90 early recovery; 0.94 baseline) (p=0.009) component was significantly increased. WA presents an irreplaceable tool for the assessment of transient phenomena. The relative contribution of the physiological mechanisms controlling the microcirculatory response in the early recovery phase appears to differ in glabrous and nonglabrous skin when compared with baseline; moreover, the endothelial NO-dependent influence seems to play an important role.Vir: American journal of physiology. heart and circulatory physiology. - ISSN 0363-6135 (Vol. 326, iss. 1, Jan. 2024, str. H96-H102)Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasleLeto - 2024Jezik - angleškiCOBISS.SI-ID - 172346115
Avtor
Kralj, Lana, 1993- |
Potočnik, Nejka |
Lenasi, Helena, 1971-
Teme
laser Doppler flowmetry |
microcirculation |
recovery to dynamic exercise |
transient phenomena |
wavelet analysis |
lasersko-doplersko merjenje pretoka |
mikrocirkulacija |
okrevanje na dinamično telesno vadbo |
prehodni pojavi |
valovna analiza
vir: American journal of physiology. heart and circulatory physiology. - ISSN 0363-6135 (Vol. 326, iss. 1, Jan. 2024, str. H96-H102)
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Kralj, Lana, 1993- | 55844 |
Potočnik, Nejka | 05201 |
Lenasi, Helena, 1971- | 18322 |
Vir: Osebne bibliografije
in: SICRIS
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