Effects of training
- Created by: z_mills1
- Created on: 05-06-14 20:04
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- Effects of training
- Hypertrophy
- cardiac muscle gets bigger the more it is trained, undergoing 'hypertrophy' - athlete's heart
- a hypertrophied heart is capable of filling more blood during diastolic phases of contraction and increased strength of contractions
- stroke volume increases
- greater blood volume available in the body as a result of training - hence venous return becomes greater during exercise
- lower resting HR
- bradycardia - resting HR below 60 bpm
- Cardiovascular drift
- during long periods of exercise, where the exercise workload is increased, there is a need for a higher cardiac output
- in trained athletes it is achieved by an increased ejection fraction (stroke volume) - contractions are much more forceful
- in untrained athlete's it is achieved by an increase in HR
- 'an increase in HR that occurs during prolonged exercise that compensates for a decrease in stroke volume in an attempt to maintain cardiac output'
- CD is caused by a reduction in fluids in the body (sweating and heat loss) which decreases the venous return and SV
- during long periods of exercise, where the exercise workload is increased, there is a need for a higher cardiac output
- Hypertrophy
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