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The reliability of cutaneous low‐frequency oscillations in young healthy males
Author(s) -
Hodges Gary J.,
Mallette Matthew M.,
Cheung Stephen S.
Publication year - 2019
Publication title -
microcirculation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.793
H-Index - 83
eISSN - 1549-8719
pISSN - 1073-9688
DOI - 10.1111/micc.12546
Subject(s) - medicine , laser doppler velocimetry , reliability (semiconductor) , wavelet , spectral analysis , nuclear medicine , zoology , blood flow , cardiology , physics , biology , power (physics) , quantum mechanics , artificial intelligence , spectroscopy , computer science
Objective Spectral analyses of laser‐Doppler flowmetry measures enable a simple and non‐invasive method to investigate mechanisms regulating skin blood flow. We assessed within‐day and day‐to‐day variability of cutaneous spectral analyses. Methods Eleven young, healthy males were tested twice in three identical sessions, with 19 to 24 days between visits, for a total of six tests. Wavelet data were analyzed at rest, in response to local skin heating to 42 and 44°C, and during 5‐minutes PORH. We did this for six frequency bands commonly associated with physiological functions. To assess reliability, we calculated CV and ICC scores. Results At rest, mean CV for the wavelet data ranged from 21% to 24% and ICC scores ranged from 0.67 to 0.91. During local heating, mean CV scores ranged from 17% to 22% and mean ICC scores ranged from 0.71 to 0.95. For peak PORH, CV ranged from 14% to 23% and the ICC range was 0.88 to 0.97. For the area under the curve of the PORH, CV range was 12% to 21% and ICC range was 0.81 to 0.92. Conclusions These analyses indicate good‐to‐excellent reliability of the wavelet data in healthy young males.