HR range in response to exercise

Question 1

How much HR rate increases is dependant on what?

Answer 1

• exercise intensity

- the more intense the exercise is, the faster the heart will beat to meet the demand for the muscles.

Question 2

Regular aerobic training will result in more what?

Answer 2

• Cardiac muscle

- Cardiac hypertrophy

Question 3

How do you calculate the maximum HR range?

Answer 3

• 220-age

Question 4

Why does cardiac hypertrophy benefit a performer?

Answer 4

• The heart is able to pump out more blood during each beat
• increases the stroke volume.
• decreases resting HR
• increase in number of red blood cells - gaseous exchange
• increased size and strength of the heart- more powerful contractions
• drop in resting blood pressure

Question 5

What is bradycardia and why is it good?

Answer 5

• ‘athletes heart’ - resting heart rate below 60bpm
• improves more O2 delivery to muscles
• improves the heart’s ability to pump blood efficiently

Question 6

What is the difference in heart rate between an athlete and non-athlete during exercise?

Answer 6

• (A) heart beats fewer times per minute-less O2 demand
• (Non A) higher O2 demand as muscles are working harder.
• (Non A) Lower stroke volume as heart is not as strong