Manual Polar RCX 3 (page 43 of 57) (English)

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Maximum Heart Rate

Maximum heart rate (HR

max

) is the highest number of heartbeats per minute (bpm) during maximum

physical exertion. It is individual and depends on age, hereditary factors, and fitness level. It may also

vary according to the type of sport performed. HR

max

is used to express training intensity.

Determining Maximum Heart Rate

Your HR

max

can be determined in several ways.

• The most accurate way is to have your HR

max

clinically measured, usually on a maximal treadmill or by

taking a bicycle stress test supervised by a cardiologist or an exercise physiologist.

• You can also determine your HR

max

by taking a field test together with a training partner.

• HR

max

can also be estimated by using the commonly used formula: 220 - age, although research shows

that this method is not very accurate, especially for older persons or those who have been fit for many

years.

If you have done some hard training in recent weeks and know that you can safely reach maximum heart

rate, you can safely take a test to determine your HR

max

yourself. Having a training buddy with you during

the test is recommended. If you are uncertain, consult your physician before undertaking the test.

Here is an example of a simple test.

Step 1: Warm up for 15 minutes on a flat surface, building up to your usual training pace.

Step 2: Choose a hill or stairwell that will take more than 2 minutes to climb. Run up the hill/steps once,

building to as hard a pace as you can hold for 20 minutes. Return to the base of the hill/steps.

Step 3: Run up the hill/steps again, building towards a pace you could just about hold for 3 kilometers.

Note your highest heart rate. Your maximum is approximately 10 beats higher than the noted value.

Step 4: Run back down the hill, allowing your heart rate to drop 30-40 beats per minute.

Step 5: Run up the hill/steps once again at a pace that you can only hold for 1 minute. Try to run halfway

up the hills/steps. Note your highest heart rate. This brings you close to your maximum heart rate. Use this

value as your maximum heart rate to set training zones.

Step 6: Make sure you get a good cool-down, a minimum of 10 minutes.

Running Cadence and Stride Length

Cadence* is the number of times the foot with the stride sensor* hits the ground per minute.

Stride length* is the average length of one step. That is the distance between your right and left foot

contacting the ground.

Running speed = 2 * stride length * cadence

There are two ways to run faster: moving your legs at a higher cadence or taking longer steps.

Elite long distance runners typically run with a high cadence of 85-95. On uphills, typical cadence values

are lower. On downhills they are higher. Runners adjust stride length to gather speed: stride length

increases as speed increases.

Yet one of the most common mistakes novice runners make is over-striding. The most efficient stride

length is the natural one – the one that feels most comfortable. You will run faster in races by

strengthening your leg muscles so they take you forward with a longer stride.

You should also work on maximizing cadence efficiency. Cadence does not progress easily, but if properly

trained, you will be able to sustain it throughout your runs and maximize your performance. To develop

cadence, the nerve-muscle connection needs to be trained - and reasonably frequently. A session of

cadence training a week is a good start. Incorporate some cadence work into the rest of your week. During

long easy runs, you could include some faster cadence every now and then.

ENGLISH

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Others manual(s) of Polar RCX 3

Polar RCX 3 User Manual - German - 61 pages

Polar RCX 3 User Manual - Dutch - 59 pages

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