Exs 7.7 - Cardiovascular System and Physical Fitness...

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Cardiovascular System and Physical Fitness Exercise 7.7
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Heart Rate (HR) Maximum Cardiac Rate: maximum HR (bpm) Can be estimated for adults in a given age range 220 – age = max HR Example: 22 year old → 220 – 22 = 198bpm You want to train at 60-80% of max HR
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Physically Fit vs. Sedentary People Physically fit individuals have a higher stroke volume (SV; mL/beat) and therefore a higher cardiac output (Q; mL/min) Stroke volume-is the amount of blood your heart pumps with each beat Q = SV x HR (stroke volume X heart rate) At any given Q, an athlete with a higher SV will have a lower HR than a non-athlete Person in poor physical condition reaches his/her max. HR at a lower work level than a person of comparable age in better shape
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Why a higher SV for fit people? A change in either stroke volume or heart rate, however, changes the cardiac output. As you become more physically fit, your heart becomes stronger and contracts more forcefully, increasing stroke volume and providing
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Exs 7.7 - Cardiovascular System and Physical Fitness...

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