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Heart
Heart
Heart, is a sophisticated device with an incredible
ability to change. Its strength is amazing.
ability to change. Its strength is amazing.
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| Your heart when you exercise |
Your heart when you rest |
Heart beats faster... it means it works faster. It pomps blood.
There are only two ways to increase the efficiency of a pomp:
There are only two ways to increase the efficiency of a pomp:
| pomp faster without changing a chamber size |
or | increase the chamber size to pomp more fluid out of it in a single beat and the same frequency |
Endurance trainings are used in this second, much more efficient method.
The heart becomes bigger, and thus, able to provide more blood to all body muscules
in a single beat.
The heart becomes bigger, and thus, able to provide more blood to all body muscules
in a single beat.
heart beats about 100,000 times a day pomping about 23 000 liters
of blood that you have in your body about
4,5 liters, if you happened to see a tanker today, note that your body pomps out the contents of two such tankers in 1 day!
10 000 liters |
10 000 liters |
4,5 liters |
When resting, the heart of a person who does not train may pomp about 55 mililiters of blood in a single beat, beating at 70 beats per minute.
That is about 4 liters of blood per minute. If the same person goes in for endurance sport for 3 months, the heart at rest will beat about 55 times per minute, and its efficiency increase up to 70 milimeters in a single beat.
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Heart beat rate of a sportsman is lower than of an average person.
Highly trained heart may beat 30 – 40 times per minute at rest.
Highly trained heart may beat 30 – 40 times per minute at rest.
low heart beat rate means high blood stroke volume of a heart and indicates increasing fitness.