ABSTRACT
The influence of temperature on the hemodynamic adjustments to direct passive heat stress within the leg’s major arterial and venous vessels and compartments remains unclear. Fifteen healthy young males were tested during exposure to either passive whole body heat stress to levels approaching thermal tolerance [core temperature (Tc) + 2°C; study 1; n = 8] or single leg heat stress (Tc + 0°C; study 2; n = 7). Whole body heat stress increased perfusion and decreased oscillatory shear index in relation to the rise in leg temperature (Tleg) in all three major arteries supplying the leg, plateauing in the common and superficial femoral arteries before reaching severe heat stress levels. Isolated leg heat stress increased arterial blood flows and shear patterns to a level similar to that obtained during moderate core hyperthermia (Tc + 1°C). Despite modest increases in great saphenous venous (GSV) blood flow (0.2 l/min), the deep venous system accounted for the majority of returning flow (common femoral vein 0.7 l/min) during intense to severe levels of heat stress. Rapid cooling of a single leg during severe whole body heat stress resulted in an equivalent blood flow reduction in the major artery supplying the thigh deep tissues only, suggesting central temperature-sensitive mechanisms contribute to skin blood flow alone. These findings further our knowledge of leg hemodynamic responses during direct heat stress and provide evidence of potentially beneficial vascular alterations during isolated limb heat stress that are equivalent to those experienced during exposure to moderate levels of whole body hyperthermia.
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Tags: EFFECTS OF TEMPERATURE AND EXERCISE ON LIMB BLOOD FLOW IN MAN
ABSTRACT
The influence of temperature on the hemodynamic adjustments to direct passive heat stress within the leg’s major arterial and venous vessels and compartments remains unclear. Fifteen healthy young males were tested during exposure to either passive whole body heat stress to levels approaching thermal tolerance [core temperature (Tc) + 2°C; study 1; n = 8] or single leg heat stress (Tc + 0°C; study 2; n = 7). Whole body heat stress increased perfusion and decreased oscillatory shear index in relation to the rise in leg temperature (Tleg) in all three major arteries supplying the leg, plateauing in the common and superficial femoral arteries before reaching severe heat stress levels. Isolated leg heat stress increased arterial blood flows and shear patterns to a level similar to that obtained during moderate core hyperthermia (Tc + 1°C). Despite modest increases in great saphenous venous (GSV) blood flow (0.2 l/min), the deep venous system accounted for the majority of returning flow (common femoral vein 0.7 l/min) during intense to severe levels of heat stress. Rapid cooling of a single leg during severe whole body heat stress resulted in an equivalent blood flow reduction in the major artery supplying the thigh deep tissues only, suggesting central temperature-sensitive mechanisms contribute to skin blood flow alone. These findings further our knowledge of leg hemodynamic responses during direct heat stress and provide evidence of potentially beneficial vascular alterations during isolated limb heat stress that are equivalent to those experienced during exposure to moderate levels of whole body hyperthermia.
HOW TO GET THE FULL PROJECT WORK
PLEASE, print the following instructions and information if you will like to order/buy our complete written material(s).
HOW TO RECEIVE PROJECT MATERIAL(S)
After paying the appropriate amount (#5000) into our bank Account below, send the following information to
08068231953 or 08168759420
(1) Your project topics
(2) Email Address
(3) Payment Name
(4) Teller Number
We will send your material(s) immediately we receive bank alert
BANK ACCOUNTS
Account Name: AMUTAH DANIEL CHUKWUDI
Account Number: 0046579864
Bank: GTBank.
OR
Account Name: AMUTAH DANIEL CHUKWUDI
Account Number: 2023350498
Bank: UBA.
HOW TO IDENTIFY SCAM/FRAUD
As a result of fraud in Nigeria, people don’t believe there are good online businesses in Nigeria.
But on this site, we have provided “table of content and chapter one” of all our project topics and materials in order to convince you that we have the complete materials.
Secondly, we have provided our Bank Account on this site. Our Bank Account contains all information about the owner of this website. For your own security, all payment should be made in the bank.
No Fraudulent company uses Bank Account as a means of payment, because Bank Account contains the overall information of the owner
CAUTION/WARNING
Please, DO NOT COPY any of our materials on this website WORD-TO-WORD. These materials are to assist, direct you during your project. Study the materials carefully and use the information in them to develop your own new copy. Copying these materials word-to-word is CHEATING/ ILLEGAL because it affects Educational standard, and we will not be held responsible for it. If you must copy word-to-word please do not order/buy.
That you ordered this material shows you have agreed not to copy word-to-word.
FOR MORE INFORMATION, CALL:
08068231953 or 08168759420
Visit any of my project websites below:
www.easyprojectmaterials.com
www.easyprojectmaterials.com.ng
www.easyprojectmaterial.net
www.easyprojectmaterial.net.ng
www.easyprojectsolutions.com
www.worldofnolimit.com
www.worldofnolimit.com
www.nairaproject.com.ng
www.nairaprojects.com.ng
www.nairaproject.net
www.nairaprojects.net
www.uniproject.com.ng
www.uniprojects.com.ng
Tags: EFFECTS OF TEMPERATURE AND EXERCISE ON LIMB BLOOD FLOW IN MAN
