W6: Guest Lecture 2 (peripheral focus)

Question 1

slide 13

Question 2

Cardiac outputs changes to effeciently reach oxygen demand.
How does it change at rest, submaximal intensity and maximal intensity?

Answer 2

Question 3

TRAINING-INDUCED CHANGES IN CARDIAC
OUTPUT: INTERACTIONS BETWEEN SV AND HR

Answer 3

Question 4

what is responsible for CO augmentation?

Answer 4

Question 5

MUSCLE FIBER TYPE Comparison

Answer 5

Question 6

Muscle fiber comp in atheletes

Answer 6

Question 7

peripheral

What is ANGIOGENESIS?

Answer 7

Refers to growth of new capillaries, either by:
● Sprouting: capillary grows out of existing capillary
● Intussusception: capillary splits into two capillaries

It can occur through one of two ways:

Question 8

How does training induced angiogenesis increase O2 extraction and nutrient/waste exchange?

Answer 8

Tranist time: how long it takes an rbc to move from one end of capillar to another

Question 9

Capillary to fiber ratio in UT vs. T

Answer 9

Question 10

peripheral

What are the benefits of increased mitochondrial intensity?

Answer 10

Mechanisms Underlying Beneficial Effects:
1. increase capacity for oxidative metabolism
2. decrease reliance on anaerobic energy systems
3. increase fat oxidation for given intensity

Question 11

ENDURANCE TRAINING AND LACTATE THRESHOLD

Answer 11

Question 12

ENDURANCE TRAINING AND SUBSTRATE UTILIZATION

Lipid content

Question 13

RER - slide 24

Answer 13

higher RER relies on carbs (close to 1:1)
Lower RER relies more on fats (0.7:1)