Fitness
Percent FTP Workout Prescription
Percent FTP workout prescription expresses intervals as fractions of threshold power so targets stay accurate as FTP rises or falls.
Percent FTP workout prescription sets intervals as fractions of functional threshold power—such as 4×8 minutes at 95% or 6×3 minutes at 115%—so targets scale as fitness changes. ERG mode on smart trainers holds watts automatically; outdoors you pace by feel and terrain.
Stale FTP depresses or inflates every workout—retest after build blocks.
Common questions
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Should outdoor intervals use percent FTP?
Yes when you have a power meter; without power, use heart-rate zones tied to a recent test, knowing heat and fatigue shift HR upward.
Related terms
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