Xert Strain Score

Also called XSS, this quantifies how much strain an athlete endures during an activity.  By taking strain, which is measured as the amount of work performed close to MPA, and normalizing it with the athlete’s Fitness Signature, one-hour at Threshold Power equates to 100 XSS.  Note that an athlete can experience greater than 100 XSS in an hour if the work is performed under short-term fatigue.  That is, 100 XSSThe Xert Strain Score quantifies how much Strain an athlete endures during an activity. By taking Strain, which is the... More is one hour at Threshold PowerAlso used as an acronym TP in Xert and sometimes described using the more colloquial term FTP, Threshold Power is..., unfatigued.  Under fatigueFatigue represents a reduction in an athlete's ability to produce power.  It either manifests as a reduction in Maximal Power..., one hour at Threshold PowerAlso used as an acronym TP in Xert and sometimes described using the more colloquial term FTP, Threshold Power is... can be much higher than 100 XSSThe Xert Strain Score quantifies how much Strain an athlete endures during an activity. By taking Strain, which is the... More.

XSS can be subdivided into low (XLSS), high (XHSS) and peak (XPSS) according to work allocation ratios.  Xert Mobile, for example, will provide real-time XLSS, XHSS and XPSS totals during the recording of an activity.  Each of these strain scores can be used in separate Training Load and Recovery Load calculations which can then map to individual Impulse Response models for each Fitness Signature parameter.

2017-05-16T16:56:32+00:00