Originally Posted by
theopowers
Not abs, but core. That includes hip stabilizers, glute stabilizers, etc. All that affects controlling the ROTATION of your pelvis and spine, and rotation on the moving, swaying bike on the road is probably the big contributor to your SI joint pain. (versus a fixed position spin bike).
I used to have SI joint pain only when I got out of the saddle to climb (rotation when no saddle to fix my pelvis position).
Somebody posted this cycling core training video in the training forum recently, it is very good. The walkout band exercises she demonstrates in the second half might be particularly good for stabilizing your probable rotation issues.
https://www.fundamentalvelo.com/2017...lists-artemis/
Thanks Theo. Since I have posted on this, I have doubled down on the core exercises. I have found that those exercises where my pelvis is not fixed, will cause pain in my back. So thanks for the core video, I will take a good look at it. Just checked the scale and I'm close to being down 30 pounds since November and I know the core is stronger. Anxious to see how I fair on the bike once winter lets go of its strangle hold.