HRM- could this be right?

So I am doubting the reading on my new Timex HRM.  I weigh 140 pounds and ran a little over 3 miles today at about an 8:30 min/mile pace.  My HRM said I burned about 450 calories, with my HR averaging 174 and peaking at 192 ( I finished the last 1/4 mile at a 7:00 min pace)

Anyway, this seems so high, even higher than the treadmill said, I figured itd be like 300 cals.  So, this is wrong, right?

How old are you? The formula for figuring out your max heart rate uses your age.

Original Post by danaofdoom:

How old are you? The formula for figuring out your max heart rate uses your age.

and is not accurate.

UD

I'm 20...

Original Post by umneydurak:

Original Post by danaofdoom:

How old are you? The formula for figuring out your max heart rate uses your age.

and is not accurate.

UD

 hmm...how does one determine their max heart rate accurately then? I'm so confused with the whole heart rate thing. Its driving me crazy.

There are protocols that are based on your sport, but basically it involves doing high intensity intervals after the warm up.

UD

How did you determine your MHR? Those calculations that people generally use are just general blah di blah's...to get a proper reading for your MHR try and do a field test..which I think is the most accurate indication of a person's MHR.  What you do is...first make sure you are well hydrated and do a proper warm up run. Then..try and find a fairly steep hill and run HARD for 3 mins. Repeat this 2 more times...trying to push yourself harder each time. On the third and last repeat, push like you are going for the gold..in other words..like you feel you will DIE at the end..[but of course, don't die, lol]. Immediately after the last repeat, check your HRM and that number should be a good indication of your MHR.  That number should be a good way to figure out what your target heart rate should be for your desired workout. The heart rate zones that you want to run in will be dependent on the intensity of the workout that you are trying to achieve. For an example...recovery, long or easy runs stay between 65 - 75%. Tempo runs stay between 87 - 92% and Interval Repeats - short bursts of speed during your run - 95 - 100%.

I'm 34. But my my HRM has me at age 15.

Okay so after I determine my MHR how can I tell if the amount of calories it said I burned were accurate?

Original Post by hart1234:

Okay so after I determine my MHR how can I tell if the amount of calories it said I burned were accurate?

Track the amount you burn, the amount you eat, create deficit. If after few weeks scale doesn't budge one/both of the numbers are wrong.

UD