Interpreting unexpected variations in power meter data - when is it a red flag and when is it just noise.
Are the tiny fluctuations in power output over the course of a ride, say 5-10 watts, really worth getting worked up over, or are we just reading too much into the data. Ive seen some people on here suggest that any variation over 2-3% is a sign of some deeper issue, whether its a mechanical problem or a riders poor form, but that seems like a pretty arbitrary threshold.
Whats the actual science behind these tiny variations. Is it really possible to maintain a perfectly consistent power output over the course of a ride, or are these tiny fluctuations just a natural result of the complex interplay between rider, bike, and road.
And what about the impact of external factors, like temperature, humidity, and wind resistance. Do these really have a significant impact on power output, or are they just excuses for when we dont hit our target numbers.
Ive also seen some people suggest that these tiny variations are actually beneficial, allowing the rider to recover and adapt over the course of a ride. But is this really supported by the science, or is it just a convenient rationalization for when we dont hit our target numbers.
Ultimately, how much stock should we really be putting in these tiny variations. Are they a sign of something deeper, or are they just noise in the system.