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Training Stress Score (TSS)- defined

by VeloNews.com

• February 13, 2008
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By Dirk Friel

Training Stress Score (TSS)- The TSS represents a calculated number that takes into account the duration and intensity of a workout to arrive at a single score of the overall training load and physiological stress created by that session. One hour of functional threshold (as hard as you can go for one hour) = 100 Training Stress Score points.