Recently upgraded to a PM that gives power balance. Not sure what to do with the info though I guess. I don’t display or consider the information on my rides, but see it after the fact. On many shorter rides of one hour in duration, I’m averaging 48/52, 49/51 or thereabouts. On my longer rides this weekend of 3 hours each in duration, I averaged exactly 50/50 for each. These longer rides were done at about 70% FTP, the shorter rides were 80-90% FTP.
Like Netrepus said, it is not all that useful yet. I have found that it is different all the time. 47% L-53% R, 50-50, 51%L-49%R. No matter what you find with your power balance data, don’t run out and make any drastic changes. While it is really cool, there are no studies on what it really means and to do with it. Yet.
Probably just has to do with which leg you favor to push off from. Like if you do a track start or swim block start, you tend to put a certain leg forward. The longer the ride, the more rotations you have to reduce the impact of start-offs from zero or corners.
If the power meter also told you that you’re right-handed, how hard would you work to be more left-handed? At some point, having a dominant limb is a non-factor. It might even be beneficial, since the time you put into creating a “super limb” pays off when you need it. There’s a reason you’re whatever-handed and tend to put a certain leg forward for starts.
I am the opposite. I am more balanced at threshold and left dominant at 70% of FTP
The only value it had for me was to know that a PM that only read my left would not be as accurate for me.