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Heart getting efficient

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Heart getting efficient Empty Heart getting efficient

Post  ounce on Mon Feb 20, 2012 9:42 am

We all know that when our legs need more muscle fibers that mitochondria is the what gets created.

But what about the heart? That durn muscle is so efficient at getting stronger, but does it get bigger? Just how does the heart get efficient. Thanks.
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Heart getting efficient Empty Re: Heart getting efficient

Post  mul21 on Mon Feb 20, 2012 9:53 am

The heart itself doesn't get more efficient. It pumps a relatively constant amount of blood with each beat. What happens is that all the other systems (particularly the capillaries) become more efficient at carrying oxygen throughout your body, therefore requring your heart to pump less frequently to get oxygen distributed throughout your body. Hence, the better shape you get in, the same heart rate will allow you to go faster at the same amount of effort than you could prior to the improvement in fitness.
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Heart getting efficient Empty Re: Heart getting efficient

Post  Nick Morris on Mon Feb 20, 2012 12:41 pm

@ounce wrote:We all know that when our legs need more muscle fibers that mitochondria is the what gets created.

But what about the heart? That durn muscle is so efficient at getting stronger, but does it get bigger? Just how does the heart get efficient. Thanks.

If that was the case, my heart would be HUGE!!lol!
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Heart getting efficient Empty Re: Heart getting efficient

Post  beanrunner on Mon Feb 20, 2012 3:08 pm

@mul21 wrote:The heart itself doesn't get more efficient. It pumps a relatively constant amount of blood with each beat. What happens is that all the other systems (particularly the capillaries) become more efficient at carrying oxygen throughout your body, therefore requring your heart to pump less frequently to get oxygen distributed throughout your body. Hence, the better shape you get in, the same heart rate will allow you to go faster at the same amount of effort than you could prior to the improvement in fitness.

What makes you run crappy @145-155 BPM but makes you run like the wind @ 160-172 BPM?

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Heart getting efficient Empty Re: Heart getting efficient

Post  Admin on Mon Feb 20, 2012 4:08 pm

@mul21 wrote:The heart itself doesn't get more efficient. It pumps a relatively constant amount of blood with each beat.

Well, not exactly true. Exercise does improve stroke volume, the amount of blood pumped with each beat. Prolonged aerobic exercise does make the heart more efficient, and usually results in a lower resting heart rate.

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Heart getting efficient Empty Re: Heart getting efficient

Post  Mark B on Mon Feb 20, 2012 5:55 pm

@beanrunner wrote:
@mul21 wrote:The heart itself doesn't get more efficient. It pumps a relatively constant amount of blood with each beat. What happens is that all the other systems (particularly the capillaries) become more efficient at carrying oxygen throughout your body, therefore requring your heart to pump less frequently to get oxygen distributed throughout your body. Hence, the better shape you get in, the same heart rate will allow you to go faster at the same amount of effort than you could prior to the improvement in fitness.

What makes you run crappy @145-155 BPM but makes you run like the wind @ 160-172 BPM?

Poor aerobic conditioning.
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Heart getting efficient Empty Re: Heart getting efficient

Post  KathyK on Wed Feb 22, 2012 5:43 pm

@Mr MattM wrote:
@mul21 wrote:The heart itself doesn't get more efficient. It pumps a relatively constant amount of blood with each beat.

Well, not exactly true. Exercise does improve stroke volume, the amount of blood pumped with each beat. Prolonged aerobic exercise does make the heart more efficient, and usually results in a lower resting heart rate.

I always find it interesting that the heart doesn't lie. Whenever I go in to see any sort of health care provider and they check my heart rate, I always get the same response...."You must be a runner."..that's even before they ask any questions about my exercise/eating habits. My heart tells them the story without me having to say a word.
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Heart getting efficient Empty Re: Heart getting efficient

Post  fostever on Wed Feb 22, 2012 9:25 pm

@KathyK wrote:
@Mr MattM wrote:
@mul21 wrote:The heart itself doesn't get more efficient. It pumps a relatively constant amount of blood with each beat.

Well, not exactly true. Exercise does improve stroke volume, the amount of blood pumped with each beat. Prolonged aerobic exercise does make the heart more efficient, and usually results in a lower resting heart rate.

I always find it interesting that the heart doesn't lie. Whenever I go in to see any sort of health care provider and they check my heart rate, I always get the same response...."You must be a runner."..that's even before they ask any questions about my exercise/eating habits. My heart tells them the story without me having to say a word.
Also the running shoes and jacket are a dead give away.
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