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If you work out regularly (or hope to start), a heart rate monitor is a worthwhile investment.
And yes you actually need your own monitor. Those little metal plates on the treadmill aren’t always accurate – and you’re not supposed to be holding on anyway!
Plus, a heart rate monitor will see you through resistance training, group classes, outdoor runs and many, many years of exercise.
I have a polar monitor from 2004 that I use 5 times a week and, besides a couple of $10 battery replacements, it’s still going strong.
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A Word About Maximum Heart Rate
The maximum heart rate equation (220 minus your age) is just an estimate, but it works pretty well for setting intensity ranges. The equation plus/minus 10-12 bpm covers about 95% of people.
Over time, you will gain more experience with your heart rate response to exercise and you will probably figure out your actual maximum heart rate.
For example, my maximum heart rate is 6bmp below the estimate based on my age.
Your maximum heart rate is genetically determined and is not an indicator of fitness. It is also not an indicator of your maximal intensity.
It just means the point at which your heart will stop beating faster to keep up with demand for oxygen. Experienced exercisers can safely work past their maximum heart rate. It just means that you are really pushing yourself and that level of intensity can only be sustained for a short time.
As you get more fit, your HRmax is unlikely to change, but the work that you will be able to do at that heart rate will change dramatically.
The important thing is to think of your heart rate in relation to the exercise you are doing (how fast, how high, how long).
When running on a treadmill at 5mph takes your heart rate to 150 bpm instead of 170 bpm, you will know that your fitness level has increased.
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Setting Fitness Goals
Especially for those new to working out, a heart rate monitor is a key tool for setting intensity goals.
Once you ballpark your maximum heart rate you can set intensity goals for each of your workouts.
Your maximum heart rate should be automatically estimated by your HRM, but if not you can just subtract your age from 220.
Once you have that, you will want to vary your workouts to meet different intensity goals.
The American College of Sports Medicine (they pretty much set the guidelines for all things fitness) has the following recommendations:
- Most sessions should be from 65 to 95% of HRmax.
- Intensity should be inversely related to duration – longer workouts should be done at a lower percent of HRmax.
- For most people, 20-30 minutes at 77-90% of HRmax is ideal for health benefits (plus a warm-up and cool-down).
- Beginners can start with as little as 5 minutes of activity, building up to 20-60 minute sessions.
- Beginners should start with a heart rate percentage goal that is physically comfortable for them.
This is especially important if it has been a long time since you have exercised or if you have specific health concerns such as obesity or joint problems.
Go ahead and start with 10 minutes at 50% HRmax. Once that is easy, just keep raising the bar.
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Track Your Fitness Progress
Using your heart rate monitor, you will quickly see when your old routine is no longer challenging your cardiovascular system.
Recording the workout and your heart rate response is a pretty easy (and satisfying) way to track your progress.
Some of the fancier monitors do this for you and even send the info to your computer, but a pen and paper works pretty well, too.
The important thing is that you stay aware of when your fitness level catches up to your workout intensity.
Pushing yourself a little farther each time you progress is the key to long-term gains in cardiovascular fitness. The kind that reduce your chances of getting all kinds of nasty diseases and of neighborhood children making beeping sounds when you walk backwards.
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Do you use a heart rate monitor when you work out or have you found another way to gauge intensity? How do you know when it’s time to kick your workouts up another notch? Let me know in the comments!
Tags: Exercise intensity, Fitness, Heart rate monitor, heartrate