Stunning difference in power R vs L

[lauraelmore1033]

I suspect you are right to be concerned. Now, I don't know anything about anything, but I can relate my own experience with a big disparity in output between legs. For years (maybe 3-4) I noted that my left leg was significantly weaker than my right. My left leg was so much weaker that it left marks on my bike where my heel would strike the crank arms. Deep grooves. Long story short, herniated disc later, referred pain all on the left side, lesson learned. Lots of strength training focusing on core and back body and such and my body is so much more balanced and a lot of my issues are resolved. Look into it!

[rebeccaC]

Do the pedals still need to be properly torque wrenched on or you can get misleading data? The Garmin forum may also have more info on power imbalance and even the multi step installation procedures.

How were your muscles before/during the ride you got the data on? Muscle fibers in one leg that are tight and shortened may be unable to produce equal power to the other leg. That’s one reason on long hard rides I stretch quads, hamstrings and glutes during the ride to keep muscle length-tension. Could you sense if you were pushing and pulling on the pedals equally with each leg?

At least you may have gotten a warning that something may be going on so you can take measures to improve the balance in your pedaling biomechanics.

You may want to pm Wahine about it, especially the leg length difference.