Control of Muscle Blood Flow During Dynamic Exercise: Muscle Contraction / Blood Flow Interactions
Year: 2006
Type: dissertation
Abstract: The interaction between dynamic muscle contractions and the associated muscle blood flow is very intriguing leading to questions regarding the net effect of these contractions on oxygen delivery and utilization by the working muscle. Study 1 examined the impact of contractions on muscle blood flow at the level of the femoral artery. We demonstrated that muscle contractions had either a facilitory, neutral, or net impedance effect during upright knee extension exercise as intensity increased from very light to ~70 % peak work rate. This led to the question of what impact a change in contraction frequency might have on the coupling of blood flow to metabolic rate during cycling exercise. The blood flow/V O2 relationship has been shown to be linear and robust at both the central (i.e., cardiac output/pulmonary V O2) and peripheral (leg blood flow/leg V O2) levels. However,
Author: Barbara June Lutjemeier
Language: English
Subfield: Physiology (medical)
Field: Medicine
Domain: Health Sciences
Open Access status: green
Award: G3120656202
OpenAlex ID: W2128708484