Usually when ppl invoke the expression “not all TSS is created equal” they are referring to different sports (“running TSS isn’t cycling TSS”), or within cycling how TSS from supra-threshold (VO2max, anaerobic, etc.) cannot necessarily be equated with the same TSS derived from several hours of .60 I…

It’s best to understand what TSS is before we ascribe our own characteristics to it, or manipulate it for ends it is not meant to achieve: Normalized Power, Intensity Factor and Training Stress Score | TrainingPeaks Explanations of Normalized Power® , Intensity Factor® , and Training S…

[image] 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... …

Thanks @apond58 . I’ll give the Xert articles another shot, but I’m very skeptical of the validity of their modeling. There may be some physiology to learn though.

I was on Xert for a number of months and found it a bit too deep for me. Many of the data geeks on this forum could likely figure it out and put it into english for us self-taught Cat 5 physiologists.:face_with_monocle:

An interesting comparison: Xret stress score for the following 1 hour workouts: 100% FTP - 100 XSS 70% FTP - 66 XSS 50% FTP - 45 XSS 40% FTP - 35 XSS TSS for the same 1 hour workouts: 100% FTP - 100 TSS 70% FTP - 49 TSS 50% FTP - 25 TSS 40% FTP - 16 TSS Xert appears to make things even wo…

TSS, like most power training metrics, was developed by Dr. Andrew Coggan. As @AndyGajda mentioned earlier, TSS is simply a measure of the stress on your body from any given workout. It’s best use, as Dr. Coggan has shown, is part of the Performance Management Chart (PMC). The PMC tracks your ind…

[image] bobmac: It’s called TiZ (Time in Zone). This is one of the things that motivated me to ask the question. Tracking TiZ seems like it might be an answer (the answer?). But if that’s the case, then TSS doesn’t really give me anything. I mean, I HAVE to be missing something very basic her…

[image] tshortt: I think we do. And yet we keep using it. Why? Just my opinion, but I think TSS is more valuable (and the PMC, too) for someone training higher volume. If you’re focused on driving up CTL and doing a lot of SS and Z2 it can be very helpful in quantifying just how much you can …

[image] tshortt: Tracking TiZ seems like it might be an answer (the answer?) TiZ is very useful, but not sufficient. If you watch Tim’s webinar on Fatigue Resistance , you will clearly realize that it isn’t just about spending time in the zone you are focusing on, but additionally doing the w…

Is TSS of Sub-threshold Zones/Levels Created Equal?

Training

Bioteknik February 8, 2019, 7:15pm 18

you would laugh at my Strava relative effort values for my zone 2 rides.

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Is TSS of Sub-threshold Zones/Levels Created Equal?

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