Measuring Physical Activity Intensity
The intensity of physical activity, or how hard your body is working, is
typically categorized as light, moderate, or vigorous based on the amount
of energy or effort a person expends in performing the activity. See General Physical Activities
Defined By Level of Intensity
(PDF-64k) for a chart that lists the intensity levels
of many types of activities.
Talk Test
The talk test method of measuring intensity is simple. A person who is active at a light intensity level should be able to sing while doing the activity. One who is active at a moderate intensity level should be able to carry on a conversation comfortably while engaging in the activity. If a person becomes winded or too out of breath to carry on a conversation, the activity can be considered vigorous.
Other Methods
- Target Heart Rate and Estimated Maximum Heart Rate
- Perceived Exertion (Borg Rating of Perceived Exertion Scale)
- Metabolic Equivalent (MET) Level
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Page last updated: April 9, 2008
Content Source: Division of Nutrition, Physical Activity and Obesity, National Center for Chronic Disease Prevention and Health Promotion
