scholarly journals Microvascular blood flow changes of theabductor pollicis brevis muscle duringsustained static exercise

2021 ◽  
Author(s):  
Martina Giovannella ◽  
Evelina Urtane ◽  
Marta Zanoletti ◽  
Umut Karadeniz ◽  
Uldis Rubins ◽  
...  
Keyword(s):  
Blood Flow ◽  
Microvascular Blood Flow ◽  
Static Exercise ◽  
Flow Changes

scholarly journals Microvascular blood flow changes of the abductor pollicis brevi muscle during sustained static exercise

2020 ◽  
Author(s):  
Martina Giovannella ◽  
Evelina Urtane ◽  
Umut Karadeniz ◽  
Uldis Rubins ◽  
Udo M. Weigel ◽  
...  
Keyword(s):  
Blood Flow ◽  
Maximum Voluntary Contraction ◽  
Isometric Exercise ◽  
Voluntary Contraction ◽  
Correlation Spectroscopy ◽  
Microvascular Blood Flow ◽  
Static Exercise ◽  
Abductor Pollicis Brevis ◽  
Flow Changes ◽  
Small Muscle

ABSTRACTA practical assessment of the health of the palm muscle, abductor pollicis brevis (APB), is important for diagnosis of different conditions. Here we have developed a protocol and a probe to utilize diffuse correlation spectroscopy (DCS) to characterize microvascular blood flow changes in the APB during and after sustained isometric exercise, during and after thumb abduction at at 55% of maximum voluntary contraction (MVC). Blood flow in the APB decreased during exercise in the subjects (n=13) with high MVC (n=7) and stayed constant in the ones with low MVC (n=6) suggesting that the mechanical occlusion due to increased intramuscular pressure exceeded the vasodilation elicited by the higher demand. Blood flow changes during exercise negatively correlated with the absolute force applied by each subject. Muscular blood flow increased after exercise compared to the values reached during exercise. In conclusion, DCS allows the study of the response of a small muscle to static exercise.

PM175 Reproducibility of dermal microvascular blood flow changes in response to reactive and thermal hyperaemia utilising laser skin doppler

Global Heart ◽  
2014 ◽  
Vol 9 (1) ◽  
pp. e98
Author(s):  
David Di Fiore ◽  
Christopher Zeitz ◽  
Margaret Arstall ◽  
Abdul Sheikh ◽  
Sharmalar Rajendran ◽  
...  
Keyword(s):  
Blood Flow ◽  
Microvascular Blood Flow ◽  
Flow Changes

Microvascular Blood Flow Changes in Human Breast During Simulated Mammography

2012 ◽  
Author(s):  
David R. Busch ◽  
Regine Choe ◽  
Turgut Durduran ◽  
Wesley B. Baker ◽  
Ellen K. Foster ◽  
...  
Keyword(s):  
Blood Flow ◽  
Microvascular Blood Flow ◽  
Human Breast ◽  
Flow Changes

Laser-Doppler perfusion imaging of microvascular blood flow in rabbit tenuissimus muscle

1995 ◽  
Vol 269 (4) ◽  
pp. H1496-H1500 ◽  
Author(s):  
M. Linden ◽  
A. Sirsjo ◽  
L. Lindbom ◽  
G. Nilsson ◽  
A. Gidlof
Keyword(s):  
Blood Flow ◽  
Microscopic Observation ◽  
Atmospheric Oxygen ◽  
Tissue Perfusion ◽  
Laser Doppler ◽  
Microvascular Blood Flow ◽  
Flow Measurements ◽  
Flow Changes ◽  
Blood Flow Measurements

To evaluate a newly developed high-resolution laser-Doppler perfusion imager (HR-LDPI) for analysis of local tissue perfusion, blood flow measurements in the rabbit tenuissimus muscle were carried out in combination with intravital microscopic observation. The principle of the LDPI method is based on a low-power laser beam scan of the exposed tissue from which a two-dimensional color-coded perfusion map is created through computerized signal analysis. The perfusion of the tenuissimus muscle prepared for microscopic observation was analyzed in a 5 mm x 8 mm area as the muscle was exposed to atmospheric oxygen tension (Po2; 20 kPa), a low Po2 (approximately 3 kPa), and after vasodilatation induced by topical application of prostaglandin E2 (PGE2). In selected areas free from larger vessels, a significantly lower perfusion average reading was demonstrated under high Po2 conditions compared with low Po2 conditions (P < 0.05, n = 5 animals), and application of PGE2 gave rise to an average reading significantly higher than that at low Po2 (P < 0.01, n = 6 animals). The results were in good agreement with the flow changes observed microscopically, and the architecture of the microvascular network, as depicted by in vivo micrographs, was clearly recognizable in the perfusion images. In conclusion, blood flow changes in the rabbit tenuissimus muscle induced by various stimuli were quantitated with the HR-LDPI method and could be spatially resolved in great detail, illustrating the potential of using HR-LDPI for analysis of local blood flow and to reveal spatial perfusion heterogeneity in tissues.

Investigation of Blood-Flow Changes During Cognitive Task Activation using CASL

2004 ◽  
Vol 35 (03) ◽  
Author(s):  
T Mildner ◽  
S Zysset ◽  
R Trampel ◽  
W Driesel ◽  
HE Möller
Keyword(s):  
Blood Flow ◽  
Cognitive Task ◽  
Flow Changes ◽  
Task Activation

1715-P: Impaired Postprandial Adipose Tissue Microvascular Blood Flow in Healthy People with a Family History of Type 2 Diabetes

Diabetes ◽  
2020 ◽  
Vol 69 (Supplement 1) ◽  
pp. 1715-P
Author(s):  
KATHERINE ROBERTS-THOMSON ◽  
RYAN D. RUSSELL ◽  
DONGHUA HU ◽  
TIMOTHY M. GREENAWAY ◽  
ANDREW C. BETIK ◽  
...  
Keyword(s):  
Type 2 Diabetes ◽  
Blood Flow ◽  
Adipose Tissue ◽  
Family History ◽  
Healthy People ◽  
Microvascular Blood Flow ◽  
History Of
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