Know This! Flashcards
What method is NOT used to preserve blood volume during steady state cardio
Increase in stroke volume
Skeletal muscle
Blood flow at rest
Blood flow during exercise
Rest. 10-15%
Exercise 80-85%
Women sweat less because they lose heat through: 3
Radiation
Conduction
Convection
Left ventricle responsible for:
Propulsion of blood - left ventricle wall thickens
advantage of increased blood volume from chronic cardio exercise
enhanced oxygen delivery to working muscles
volume of air breathed per minute
_ after exerciser crosses VT2 threshold
minute ventilation
above VT2 the frequency of breathing becomes more pronounced and minute ventilation rises disproportionately
Tidal volume _ as breathing rate increases.
decreases
_ receptors sensitive to chemical changes in the blood control ventilation
humoral
when CO2, hydrogen and potassium increase in blood _ stimulate the respiratory center to increase ventilation
humoral receptors
neural input to the respiratory center may come from _ and _ peripheral receptors
GTOs
muscle spindles
decreased cardiac stress, improved VO2 max and reduced work environment for the heart associated with increase in:
increase in heart size and volume
evaporation accounts for only of _ thermoregulation while at rest, it accounts for approximately _ of thermoregulation during exercise.
20%
80%
new capillaries are formed
existing capillaries are more easily recruited
BOTH are a result of endurance training _
creating more cross sectional area for exchange btwn vascular and active muscle fibers
_ hormone causes the release of liver glycogen and the availability of FFAs in the blood
epinephrine
lactate threshold also known as
VT1
