Chapter 6: Physiological Responses and Adaptations to Aerobic Endurance Training

The effects of aerobic exercise are regulated by these three things

The most important variable in regulating the effects of aerobic exercise

These two things lead to an increase in heart rate, leading to an increase in overall blood flow

Cardiac output (Q) =

stroke volume has been shown to increase to maximal levels at this range of Vo2max and plateau long before exhaustion

as more blood enters the heart it causes it to stretch more, resulting in an increase in elastic contractile force that is independent of the neural and humoral factors

This increases proportionally to the volume of blood filling the heart

The 50-60% decrease in TPR during increasing intensity aerobic exercise is due to this

During endurance exercise there is a linear increase in this that is directly proportional to the exercise intensity, and cardiac output, and a negligible change in this (2)

Mean Arterial Pressure =

This portion of blood in the circulation decreases during exercise

the proportion of this increases in the blood during exercise, even though the number does not increase

This is an indication of how much oxygen the heart needs

cardia output, HR, SV, MAP, coronary artery diameter, and RPP do this during exercise

Ve (minute ventilation) =

The amount of air moved into or out of the lungs in one minute

RQ or RER =

RQ around rest is

RQ and RER represent this

This is sometimes used as a criterion measure as evidence of an individuals attaining VO2max during a progressive exercise test

Ventilation, BR, TV, RER, and RQ do this during exercise

The difference in the amount of oxygen in the arterial blood vs the venous blood is known as

This represents the extent to which oxygen is removed from the blood as it passes thorugh the body

resting a-vO2 difference is approximately