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Chapter 4

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Comparing Intensity of Aerobic Physical Activity

Table comparing intensity of physical activity

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http://www.cdc.gov/physicalactivity/everyone/measuring/exertion.html

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Lecture Notes

The chart picture on this slide compares the multiple ways of measuring intensity that we talked about on the previous slide, heart rate reserve and max heart rate, and you can see here that they're also connected, those different categories are connected to intensity descriptors such as very light, light, moderate, all the way up through maximal exercise. This chart also shows how these percentages of heart rate reserve and max heart rate correspond to the Rating of Perceived Exertion scale. This scale is a subjective measure, it allows the participant to rate how hard they're exercising while they're exercising. So it typically ranges from 6 to 20, the original scale does, and it's correlated to the actual, the person's actual heart rate during exercise. It's a very widely-used measure that assesses the person's perception of effort. There's a link at the bottom of the slide here, and I'd like you to click on that link and read all about the Rating of Perceived Exertion scale. There's also some more information in your book about the original and also an adapted version of the Rating of Perceived Exertion scale.