Question 5 (1 Viewer)

[Speed6]

Need some ideas on how to get started on question 5. I don't have much knowledge on stroke volume etc so it would be much appreciated if someone helped me with this question to the best of their ability thanks.

 

[Speed6]

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[snowflakeptical]

stroke volume is the amount of blood pumped out of the left ventricle of the heart, to be sent to the tissues of the body
since a fit athlete has a higher stroke volume than an unfit athlete, they have more blood circulating the body, allowing more oxygen to be delivered to be used up by the muscles.
This affects superior performance because more oxygen available for use means the athlete can perform activities of longer duration and at a higher intensity

in summary: stroke volume (L/beat) ---> more blood being delivered--->more oxygen to be used up by muscles--->activities for longer duration and higher intensity

 

[Chris_S]

Fit athlete = increased sv and increased co due to increase in muscle hypertrophy of heart = lower resting heart rate = more oxygenated blood pumped to the working muscles at time of working demand and hence aerobic capacity of athlete has increased

 

[Speed6]

Both excellent responses, thanks