Potassium levels DECREASE heart rate, and maybe lead to severe cardiac arrest.
and for sure, this is a mechanism of how potassium level in ECF can decrease heart rate:
first, the potassium level increase in ECF making its efflux increase, due to activation of potassium channels in pacemaker cells, then the slope of pacemaker action potential will decrease, which means that the duration of one beat is prolonged, and this lead to decrease the numbers of beats in one minute, which by turn means that the heart rate is decreased.
Cardiac output will level off as your heart muscle strengthens and your body becomes accustomed to physical activity. For example, when first getting started, walking 5 minutes may be enough to increase your heart rate, but within a few weeks, you will need to increase the intensity of your walk to increase your heart rate by the same amount.
The heart rate increases in direct proportion to the physical activity. The heart rate may goes up to 180 per minute from the resting 75 per minute.
Does the vagus nerve carry impules that increase the heart rate
The heart rate will increase due to hypovolaemic shock!
In decreases the heart rate.
Cardiac output will level off as your heart muscle strengthens and your body becomes accustomed to physical activity. For example, when first getting started, walking 5 minutes may be enough to increase your heart rate, but within a few weeks, you will need to increase the intensity of your walk to increase your heart rate by the same amount.
Increase the level of intensity
Check out the site http://www.heartmonitors.com/exercisetips/heart_rate_basics.htm for a chart on heart rates given age and activity level. Be sure to note that your heart rate will increase with the level of excercise.
Scary games can increase the heart.
The heart rate increases in direct proportion to the physical activity. The heart rate may goes up to 180 per minute from the resting 75 per minute.
spicy foods increase our heart rate but nothing will slow it down.
If your heart rate increases AFTER running, there is something wrong and you need to see your doctor. Heart rate increases WHILE you are running, and should start to come down after the running stops.
an increase in pulse rate
pain does increase your heart rate
hmm heart rate maybe?
Does the vagus nerve carry impules that increase the heart rate
The heart rate will increase due to hypovolaemic shock!