Wednesday, October 28, 2009

Does caffiene effect your heart rate?

yeah



caffeine increas heart rate



Well, to be specific, caffeine (like most pyschoactive drugs) exerts its effect on us by altering the activity of some of our neurotransmitters. Neurotransmitters are the nervous system%26#039;s way of conveying messages between neurons, and also to muscle tissue. Some neurotransmitters that caffeine is known to increase the activity of are norepinephrine, dopamine, and serotonin. The increase in norepinphrine is likely what causes the heart rate to increase, however each of these neurotransmitters has some stimulatory effects. Norepinephrine, however, is a powerfully stimulating neurotransmitter; it is associated with the %26#039;fight or flight%26#039; response, which of course includes an increased heart rate. I believe it may effect epinephrine as well, which is similar to norepinephrine except that it is also a hormone (and a neurotransmitter). This means it has both short and long lasting stimulatory action.



Hope that was helpful!



Does caffiene effect your heart rate?

yes, it has .



Does caffiene effect your heart rate?

Yes, caffeine is a stimulant, which, in excess, can cause arrhythmia.



Does caffiene effect your heart rate?

You bet.



Caffeine is a compound that stimulates your Xanthyne receptors (with actions weekly similar to those of adrenaline) ,,,,its what we call an Alpha stimulant, and tes, definitely it will...



Cofee is contraindicated in people with heart arrhythmias or disrhytmias....



It definitely does..



Does caffiene effect your heart rate?

for a while, because it%26#039;s a stimulant.



Does caffiene effect your heart rate?

Of course it does sweetie, and is a diuretic too.



Does caffiene effect your heart rate?

Yes, it does. Thats why most people feel a boost or more energetic after drinking tea or coffee.



Majority of the energy drinks like red bull, bomb, etc. have caffeine.



Not good for your heart and should drink sparingly.



Does caffiene effect your heart rate?

yeah, it speeds it up. Not good for u!



Does caffiene effect your heart rate?

in some studies it shows that it spikes your heat rate but when studying caffeine you normally use coffee, and hot liquids raise your heart rate. more so that just caffeine alone, and it is only for about 15 minutes and then it goes back to normal.



Does caffiene effect your heart rate?

1. Studies have shown that caffeine elevates both blood pressure (BP) and heart rate, which may come as no surprise to coffee drinkers familiar with the lift that the beverage delivers. The investigators found that caffeine raised average blood pressure by about 4 points, and pushed average heart rate up by about 3 beats per minute.



The researchers caution that, if sustained by regular coffee-drinking over a lifetime, these increases in blood pressure and heart rate will elevate the risk of stroke and heart disease. Many other studies, some including tens of thousands of subjects followed over decades, have failed to establish a conclusive link between even heavy coffee consumption and cardiovascular disease. The investigators explained that those epidemiologic studies have not focused specifically on coffee consumption, and often rely on subjective measurements of caffeine intake.



2. caffeine increases the strength and frequency of heartbeats



3. Effects on the heart



Caffeine increases the levels of cAMP in the heart cells, mimicking the effects of epinephrine. cAMP diffuses through the cell and acts as a %26quot;secondary messenger,%26quot; activating protein kinase A (PKA; cAMP- dependent Protein Kinase). This increased PKA activity increases the responsiveness of cardiomyocytes to the calcium currents that control beating.



According to one study, caffeine, in the form of coffee, significantly reduces the risk of heart disease in epidemiological studies. However, the protective effect was found only in participants who were not severely hypertensive (i.e. patients that are not suffering from a very high blood pressure). Furthermore, no significant protective effect was found in participants aged less than 65 years or in cerebrovascular disease mortality for those aged equal or more than 65 years.

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