Výsledky vyhledávání - "James K. Griffiths"

Akademický článek

Examining the upper frequency limit of dynamic cerebral autoregulation: Considerations across the cardiac cycle during eucapnia

Autor: Joel S. Burma, Matthew G. Neill, Elizabeth K. S. Fletcher, Brooke E. Dennett, Nathan E. Johnson, Raelyn Javra, James K. Griffiths, Jonathan D. Smirl

Publikováno v: Experimental Physiology, Vol 109, Iss 12, Pp 2100-2121 (2024)

Abstract There are differences within the literature regarding the upper frequency cut‐off point of the dynamic cerebral autoregulation (CA) high‐pass filter. The projection pursuit regression approach has demonstrated that the upper frequency li

Externí odkaz: https://doaj.org/article/f5cc0ec1d5814694acff8b09282573f5

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Akademický článek

Heart Rate Variability and Pulse Rate Variability: Do Anatomical Location and Sampling Rate Matter?

Autor: Joel S. Burma, James K. Griffiths, Andrew P. Lapointe, Ibukunoluwa K. Oni, Ateyeh Soroush, Joseph Carere, Jonathan D. Smirl, Jeff F. Dunn

Publikováno v: Sensors, Vol 24, Iss 7, p 2048 (2024)

Wearable technology and neuroimaging equipment using photoplethysmography (PPG) have become increasingly popularized in recent years. Several investigations deriving pulse rate variability (PRV) from PPG have demonstrated that a slight bias exists co

Externí odkaz: https://doaj.org/article/d5c601da83a94fe48849088769690735

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Akademický článek

Is Running Power a Useful Metric? Quantifying Training Intensity and Aerobic Fitness Using Stryd Running Power Near the Maximal Lactate Steady State

Autor: Cody R. van Rassel, Oluwatimilehin O. Ajayi, Kate M. Sales, James K. Griffiths, Jared R. Fletcher, W. Brent Edwards, Martin J. MacInnis

Publikováno v: Sensors, Vol 23, Iss 21, p 8729 (2023)

We sought to determine the utility of Stryd, a commercially available inertial measurement unit, to quantify running intensity and aerobic fitness. Fifteen (eight male, seven female) runners (age = 30.2 [4.3] years; V·O2max = 54.5 [6.5] ml·kg−1·

Externí odkaz: https://doaj.org/article/a1439f209c0e4ac3a95dfc1798e9ad7b

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Akademický článek

Heart Rate Variability and Pulse Rate Variability: Do Anatomical Location and Sampling Rate Matter?

Autor: Burma, Joel S.^{1,2,3,4,5,6,7} (AUTHOR) ibukunoluwa.oni1@ucalgary.ca, Griffiths, James K.^1,8 (AUTHOR) joseph.carere@ucalgary.ca, Lapointe, Andrew P.⁹ (AUTHOR) andrew.lapointe@ucalgary.ca, Oni, Ibukunoluwa K.^3,4,5,10 (AUTHOR) ateyeh.soroush@ucalgary.ca, Soroush, Ateyeh^3,4,5,10 (AUTHOR) dunnj@ucalgary.ca, Carere, Joseph^{1,2,3,4,5,6,7} (AUTHOR) jonathan.smirl@ucalgary.ca, Smirl, Jonathan D.^{1,2,3,4,5,6,7} (AUTHOR), Dunn, Jeff F.^3,4,5,8 (AUTHOR)

Publikováno v: Sensors (14248220). Apr2024, Vol. 24 Issue 7, p2048. 20p.

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Akademický článek

Validity and reliability of deriving the autoregulatory plateau through projection pursuit regression from driven methods.

Autor: Burma, Joel S.^{1,2,3,4,5,6,7} (AUTHOR) joel.burma@ucalgary.ca, Griffiths, James K.^1,8 (AUTHOR), Smirl, Jonathan D.^{1,2,3,4,5,6,7} (AUTHOR)

Publikováno v: Physiological Reports. Jan2024, Vol. 12 Issue 2, p1-13. 13p.

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