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Introduction to Heart Rate Training
Douglas Bush

Training at the proper intensity while swimming, biking, and running is one of the key elements in improving athletic performance and staying injury free. Often times many athletes subscribe to the theory harder is always better mentality during workout, this not the case. The vast majority of workouts should be performed at an easy to moderate intensity.

How do you determine the proper training intensity?
Biking and running with a heart rate monitor is a great way to ensure you are working out at the proper intensity. Training while wearing a heart rate monitor gives the athlete immediate feedback about training effort.

It is essential to develop a strong aerobic base which allows the body to efficiently metabolize stored body fat while sparing stored carbohydrate. During exercise other adaptations that occur during exercise are increased density of capillaries to muscles and connective tissue. These adaptations can only occur when exercising at an easy to moderate intensity and that is why it is very important to develop this aerobic base before doing higher intensity sessions.

One of the most confusing things about using a heart rate monitor during training is to establish heart rate training zones. A number of formulas have been developed to estimate training zones based around maximum heart rate. These formulas are estimates and can be up to 30 to 40 beats off for an individual.

A much more precise method for establishing training zones is to base the zones around the lactate threshold. Lactate threshold is an exercise intensity in which the body can no longer clear one of the by-products of exercise and this by-product begins to accumulate in the blood. This is the burn that is felt in the muscles during hard efforts and races. Elite athletes have been using this method for establishing training zone for quite a long time. More information about lactate threshold can be found on my website by clicking this link.

The most accurate method of determining lactate threshold is through laboratory testing. Field tests are another method that the athlete can perform on their own to estimate lactate threshold heart rate. The field tests are a good approximation of lactate threshold heart rate and this is a much more precise method than using the max heart rate formulas.
To do this test you will need a heart rate monitor (one that has a lap function is best but not necessary). The test should be performed for both biking and running as training heart rates can be very different for each sport. Make sure to be very well rested and hydrated for the tests and plan a few days rest between both of the tests.

It is best to retest training zones every 3 – 4 months as lactate threshold heart rate does change dramatically due to changes in fitness.A word of caution. These tests are quite strenuous and you should consult your physician before starting an exercise program.

Testing Protocol:

Make sure to warm up well for 10 to 15 minutes before starting out. The field test is going to be an individual time trial of 30 minutes. The effort should be very hard, but not so hard that you slow down at the end, think race effort of about 10k running or 30k bike time trial effort.

Start the time trial and make sure to press the start button on the heart rate monitor. After the first 10 minutes press the lap button and press the lap button again at 30 minutes. Cool down 5 to 10 minutes easy. The average heart rate over the last 20 minutes is your lactate threshold estimate.

*Note: If your heart rate monitor does not have a lap function look at the watch every minute and make a mental note of average heart rate over the last 20 minutes of the test.

Now that you have your lactate threshold heart rate what do you do with it? Using the chart below calculate your heart rate based upon the lactate threshold heart rate you established in the field test.

>>> Read More on Zone Descriptions

 


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