Heart Rate Monitor FAQ

What information is needed to calculate a target heart rate training zone?

Before you can calculate your target heart rate, you'll first need to find your maximum heart rate.  The best way to find this is to take a cardiac stress test, which is usually administered by a doctor.  Since this may not be practical, you can get a close estimate by spending about 15 minutes exercising where you gradually increase the intensity, perhaps on a stationary bike or treadmill.  At the very end of your session, spend 15 additional seconds at the highest intensity possible.  Afterwards, measure your pulse rate using a heart rate monitor.  This will be your maximum heart rate.  If you're not sure your body can handle the stress of this test, by all means consult your doctor.

Another method, which is much less accurate, is to subtract your age from 220.  Just realize your actually maximum rate can vary greatly from this number.

I have my maximum heart rate (MHR).  What should be my training zone?

It depends on how intense you want your training to be.  Here are some suggested zones, as calculated by the popular Fox and Haskell formula, intended for those between 20 and 70 years old:

• 50%-60% MHR - Moderate activity level, suited for warm up.
• 60%-70% MHR - Weight control level, for burning fat or general fitness.
• 70%-80% MHR - Aerobic training level, for cardio or endurance training.
• 80%-90% MHR - Anaerobic training level, considered very intense training.
• 90%-100% MHR - VO2 max level, which can be dangerously intense

Also, many heart rate monitors will be able to suggest a customized zone, or give additional tips to calculate one.

What is considered a normal resting heart rate?

The definition of "normal" can vary greatly.  However, 70 beats per minute is generally consider typical for an adult male, and 75 for an adult female.  Anywhere between 60 and 100 is considered typical, though a rate in the 50s is rarely a cause for concern.  For someone that's in outstanding physical condition, the resting rate can actually be much lower.  Amazingly, the lowest recorded resting heart rate is only 28 beats per minute!  This was accomplished by five time Tour de France champion Miguel Indurain.

What are the main differences between different heart rate monitor models?

All models will measure heart rate, but they vary greatly in the amount of features and method of operation.  Most heart rate monitors work by transmitting a signal from a chest strap monitor to a watch unit.  A few work by measuring your pulse through your finger instead.  Some monitors can even use both methods.

There are also a huge range in extras that can be found in heart rate monitors.  The more inexpensive ones won't contain many extra functions, though some of the high end models carry a dizzying amount of extras.  Some of these features even include GPS and odometer support .

I've never owned a heart rate monitor.  Which should I buy first?

You can start by reading our reviews and see if you can find one right for you.  Some monitors are made specifically for a certain function, like running or biking.  But if you want to try a cheaper heart rate monitor, the Timex Personal or Omron HR100-C are both under $60 and are solid buys.  If you don't care much about price and just want the best heart rate monitor, you might want to go with the Polar RS800sd, though it will cost you close to $500.