A 2% increase in power will cause fatigue to occur much sooner. The difference between 20 minute and 60 minute power is only approximately 5%.
In Concept2 rowing the difference in power between 500m and 1000m is only approximately 5%, between 1000m and 2000m approximately 5% although the drop in power from 2000m to 5000m is approximately 14%. NB that was what I worked out from a British Lightweight record holder.
In my opinion 2% is large, but then I get perturbed if one of my watches gains or loses more than 4 seconds a day.
Another use I see is this. I used running for fitness for other sports. My weight was very different for each sport, so it was hard to compare fitness or power output over time as weight affected pace so much, but it would be interesting to know if my power was the same when I weighed 11st 6lbs as when I weighed 14st.
Recently I commented in this thread or another that the most frequent use-case for power data has been for pacing purposes, especially in non-flat races. If you are willing/able to dig in a bit deeper, though, there are other applications, including looking for fatigue-induced changes in the ratio of power to pace (i.e., running effectiveness) during longer runs. Simply put, some people show changes but others do not, which *might* provide insight into how to best modify training in the future.
(Related: somebody recently commented on the Stryd FB page that their masters thesis research found a relationship between "form" a.k.a. oscillatory power and running economy.)
In Concept2 rowing the difference in power between 500m and 1000m is only approximately 5%, between 1000m and 2000m approximately 5% although the drop in power from 2000m to 5000m is approximately 14%. NB that was what I worked out from a British Lightweight record holder.
In my opinion 2% is large, but then I get perturbed if one of my watches gains or loses more than 4 seconds a day.
Another use I see is this. I used running for fitness for other sports. My weight was very different for each sport, so it was hard to compare fitness or power output over time as weight affected pace so much, but it would be interesting to know if my power was the same when I weighed 11st 6lbs as when I weighed 14st.
Andrew Coggan wrote:
2% is exactly 2%. Whether that is large or small is in the eyes of the beholder. Recently I commented in this thread or another that the most frequent use-case for power data has been for pacing purposes, especially in non-flat races. If you are willing/able to dig in a bit deeper, though, there are other applications, including looking for fatigue-induced changes in the ratio of power to pace (i.e., running effectiveness) during longer runs. Simply put, some people show changes but others do not, which *might* provide insight into how to best modify training in the future.
(Related: somebody recently commented on the Stryd FB page that their masters thesis research found a relationship between "form" a.k.a. oscillatory power and running economy.)