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Critical Power
What is it? Why should I use it? How do you calcaulte it.
01
What is it?
Critical power (CP) represents the boundary between the severe and heavy intensity domain. Between steady state and non-steady state. Each domain has physiological characteristics. We use it as an aerobic parameter of fitness. It is underpinned by type 1 muscle fibre types and capillary density around these fibres.
03
How to Calculate it
There are multiple methods, please see our blog on this. There are options available on WKO5, but it is very easy to do in Excel. Download the following sheet.
02
What is W'
The other element it provides is W' which is a set amount of work above CP that you can complete before task failure. It predicts tolerance to severe-intensity exercise. Measured in kJ.
Collectively we use these values to understand your physiology.
04
Constraints
How long you can sustain it for is based on how well-trained you are. on average it's is 30-40 minutes, it has been up to 75 minutes and as low as 20
Critical Power, is the boundry between the severe in heavy insesity domain, between non steady state and steady state power. There is a vast amount of reserach on CP since its concept was first introducted in 1925.
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