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The heart increases in size as it becomes strongera stronger and larger heart produces the following desirable effects:increased stroke volume increased cardiac output lower resting heart rateINCREASED STOKE VOLUME Stroke volume is the amount of blood pumped from the heart in a single beat.
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1. Benefits of Exercise: The Circulatory System. THE UK LEAD A SEDENTARY LIFESTYLE!!! meaning that we sit down a lot.
For athletes and the general population the benefits of regular exercise only differ in the level, intensity and frequency with which they need to be practised.
STRONGER CARDIAC MUSCLE
Cardiac muscle (heart) becomes stronger with regular activity and exercise.
2. The heart increases in size as it becomes stronger
a stronger and larger heart produces the following desirable effects:
increased stroke volume
increased cardiac output
lower resting heart rate
INCREASED STOKE VOLUME
Stroke volume is the amount of blood pumped from the heart in a single beat. Normally measured when resting.
3. INCREASED CARDIAC OUTPUT
Cardiac means ‘of the heart’ like cardiac muscle, cardiac output also means how much blood the heart pumps out.
It is measured in terms of the total volume of blood pumped from the heart during one minute
CARDIAC OUT = STROKE VOLUME X BEATS PER MINUTE
LOWER RESTING HEART BEAT
a stronger and larger heart pumps more blood around the body each time it beats.
4.
Resting heart rates vary between individuals, but they are normally between 60 beats per minute (bpm) and 80 bpm. People who exercise regularly tend to have resting heart rates of between 50-60 bpm.
OLYMPIC ROWING CHAMPION, STEVE REDGRAVE HAD A RESTING HEART RATE OF BETWEEN 40-45 BPM
6. MEASURING YOUR PULSE
To measure your heart rate you need to measure your pulse.
To count the number of times your heart beats in a minute you need to count your pulse over a minute.
The most common place to measure your pulse are at the radial pulse on the inside of your wrist and the carotid pulse, this is on your neck to one side of your Adams apple (larynx).