Changes In Response to Excercise Flashcards
What is maximal intensity?
Exercising past 85% of your maximum HR (220 - age)
What is submaximal intensity?
Exercising up to 85% of your maximum HR (220 - age)
Which energy system does maximal exercise use?
Anaerobic energy system
Which energy system does submaximal exercise use?
Aerobic energy system
What is a “steady state”?
When the athlete is able to meet oxygen demands with their oxygen supply (submaximal exercise)
What is cardiac hypertrophy?
When the heart becomes bigger and stronger due to exercise
What is the average resting HR?
72 bpm
What is bradycardia?
When the heart rate is below 60 bpm
What are the benefits of cardiac hypertrophy?
- A better stroke volume
- Decreases HR
- Improves oxygen delivery as the heart requires less energy
- Decreases HR
How does strike volume respond to exercise?
It increases as intensity increases (40% - 60% of max effort) and then plateaus
Why does strike volume respond the way it does?
An increased heart rate results in a shorter diastolic phase
How does Cardiac Output respond to exercise?
It increases as the intensity of exercise increases and plateaus at maximum intensity
What is cardiovascular drift?
A gradual increase in HR due to a decrease in SV
What 2 conditions allow cardiovascular drift to occur?
- Prolonged exercise (10+ minutes)
- Warm environment
Why does cardiovascular drift occur?
- A portion of sweat contains blood plasma
- Decrease of plasma volume in blood reduces venous return + SV as blood is more viscous
- Heart rate increases to compensate
