Rapid Heart Rate, while exercising

I exercise 6 days a week.  I run about 12 miles a week, I spin and I weight lift.  My resting HR is 72 (normal) but when I run it can get up into the high 190's which I think is high for someone who has been running for 11 years. All heart tests have come back negative as I have had them all.  They have found my heart has double beats and some triple beats but nothing to be concerned with (so they say).  Any concern about this heart rate being so high after running? Doctor says keep exercising, but I am concerned!

[gymdandee]

You didn't mention your age! But read my following post
To figure your heart rate use the following.
The Karvonen Formula is a mathematical formula that helps you determine your target heart rate zone. The formula involves using your maximum heart rate (MHR) minus your age to come up with a target heart rate range (which is a percentage of your MHR). Staying within this range will help you work most effectively during your cardio workouts.

Below is an example of the Karvonen formula for a 23 year old person with a resting heart rate of 65 beats per minute (*to get your resting heart rate, take your pulse for one full minute when you first wake up in the morning or after you've resting for a while). This formula also includes an updated calculation of maximum heart rate (the previous formula was 220 - age, which has now been shown to be inaccurate):

206.9 - (0.67 x 23 (age)) = 191
191 - 65 (resting heart rate) = 126
126 * 65% (low end of heart rate zone) OR 85% (high end) = 82 OR 107
82 + 65 (resting heart rate) = 147
107 + 65 (rhr) = 172
The target heart rate zone for this person would be 147 to 172


The Peak 8 routine it will quickly raise your heart rate 8 times for very short bursts, with a cooling down period in between. Ideally you’ll be sprinting or cycling full throttle for 30 seconds with a 90 second cool down in between each outburst. 

This is the fastest way to lose fat and build muscle in the body. Peak 8 actually stimulates the growth hormone in the body. I encourage you to visit Dr Mercola’s site to learn more about Peak 8 fitness because I personally feel that it is one of the best ways to exercise, especially considering the speed at which you can lose fat and build muscle. 

I highly recommend you read this article and watch the videos on the page. It will give you all the information you need to know about Peak 8 – Flood Your Body With This “Youth Hormone” In Just 20 Minutes 

What you eat after Peak 8 training does matter 

It’s recommended that you do not eat sugar or carbohydrate for 2 hours after the Peak 8 exercise because these foods can impact the release of the growth hormone in the body.  The link is below 
http://fitness.mercola.com/sites/fitness/archive/2010/11/13/phil-campbell-on-peak-8-exercises.aspx 

[nurseinstead12]

Sudden rapid heartbeats originating in the ventricles are the most dangerous arrhythmias. Ventricular tachycardia (VT), a rapid yet steady beat, is dangerous in its own right.So be careful.Thank you very much for sharing the information.