Originally Posted by rootsnatty
DomXZ, traditional extenders do not work based on stress relaxation, any extender with springs is primarily creep-based. I don’t have time to explain, headed to work, and I don’t know how to post a link, but if you go to my thread “My Stress Relaxation-based Traction Device in Action” I explain this to Austfred pretty early in the thread. And there are some good explanations about viscoelasticity in general. You are correct though, 20 minutes probably will not be long enough for most to make gains through stress relaxation-based methods.
I should’ve been clearer. Extender without any springs.