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July 18th, 2007

The Rate of Perceived Exertion (RPE) is a scale of how hard you feel you are working when you exercise. The scale relates to the responses experienced during exercise and is based on the correlation between perceived exertion, heart rate and oxygen consumption.

Physical symptom

RPE

Heart rate training zone

At rest

1

Non exercise heart rates

Low level activity

2

Non exercise heart rates

Light exertion

3

Non exercise heart rates

Slightly more involved activity, breathing is normal.

4

Non exercise heart rates

Breathing through the nose, conversation is possible in paragraph statements.

5

50% of maximum heart rate

Change from breathing through the nose to through the mouth.

6

60% of maximum heart rate

Breathing becomes more difficult, slightly out of breath, conversation is possible in sentences.

7

70% of maximum heart rate

Breathing is heavy; conversation is possible in short sentences.

8

80% of maximum heart rate

Sweating, conversation possible in one word answers.

9

90% of maximum heart rate

Maximum effort, hard to maintain for long, unable to hold a conversation.

10

Maximum heart rate

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