First of all I would like to thank you for the Runalyze-shirt I've ordered.

It's the best shirt I have for the summertimes because of it's whiteness and and it doesn't rubs my nipples!

As power meters for running are upcoming and will be probably the new deal of the next years I would be able to still use my favorite analysis Software - Runalyze - for it.

Currently there is the power displayed in a graph together with average power and normalized power (you call it specific power), but the is a lot more you can do, for instances a form graph based on power.

Let me explain some values that could be useful in Runalyze for further analysis of my runs. These values are well explained in Jim Vance book "Run with power". Currently I need to go to trainingpeaks.com to analyze meaningful based on power.

**rFTPw - Running Functional Threshold Power**

This is the highest power average you could deliver over an hour.

Based on this value, each athlete has to determine by itself, you are able to calculated further intensity values.

This value is much more important then the HFmax value and also valuable to set your power zones already available in Runalyze.

**NP - Normalized Power**

This is the average power (AP) cleaned from unusual peaks or groves and anomalies. This treats intervals or hilly trainings much better.

To be honest I have no idea how to calculate this.

**IF - Intensity Factor**

Based on the rFTPw and the NP you can calculate an intensity factor.

IF = NP : rFTPw

A factor of 1 would be near your anaerobe power threshold.

This could also displayed as a percentage value in the data fields.

The IF could be valuable for the power zones.

**VI - Variability Index**

The VI shows how evenly and constant the power of a run was.

A run in a flat area has a very constant power distribution compared to that a run in the mountains varies a lot.

VI = NP : AP

**TSS - Training Stress Score**

The Training Stress Score is somehow comparable to the TRIMP but much more accurate.

It's calculated like this

TSS = ( (Duration of training in seconds * NP * IF) / (rFTPW * 3600s) ) * 100

**kJ - Kilojoule**

I can imagine this as a lot of work to do to integrated this in Runalyze. But I think it's really worth it, because it gains a lot of possibilities in running analysis and makes Runalyze future proof. Not to many analysis platforms have this for now, but they will.

Thanks again for this nice peace of software.

Beste Grüße aus Hamburg-Langenhorn!

Aldipower