Heart Rate Monitors and Running.
Let's talk a little about heart rate monitors and how they are used for training. A heart rate monitor (HRM) can give you a more accurate indication of how hard your body is working during exercise. This comes in handy when you are in a training program that has different levels, or distances in our case, of training sessions. The rule of thumb is that the longer the workout the less you should exert yourself (easier), and vise versa (short workout, more intense). This is where the HRM comes in.
You will hear people talk about heart rate zones or levels. So where do you get these? There are a few different ways to find your heart rate zones (HRZ) and the most common is just to take 220 minus your age and this number would be your maximum heart rate. The HRZ are then calculated by taking 50-60% of your max for HRZ1, 60-70% of max HRZ2, 70-80% HRZ3, 80-90% HRZ4, 90-99% HRZ5. These numbers are just estimates and are different for every individual. There are more accurate ways to find your max but we won't go into those here.
The HRZ that we will use will be mostly 2 and 3. Our long runs will be at HRZ2. This is where you can still talk and aren't breathing heavy. You should feel comfortable in this zone and be able to sustain it for a long period. For the shorted runs and interval runs we will be in HRZ3 where you are breathing heavier and can only do a short distance at this level. Zones 4 and 5 are very high intensity (sprints) and are for experienced runners, and are used sparingly.
I find that a HRM helps runners stay at the correct level for the particular distance of run they are doing. It is easy to go too fast or too hard and a HRM will help keep you on track.