Eccentric Movements for Tendinosis

Apparently there is some evidence that performing eccentric (negative) movements
for tendinosis has been effective for rehab:

http://www.thefreelibrary.com/Heavy-Load+Eccentric+Calf+Muscle+Training+for+the+Treatment+of…-a053984506

and

Now, for example, I have been having some tendinosis for a number of months in my left fore-arm
It doesn’t normally cause any pain unless I start doing something like curls or chin-ups.
So the idea here is that if I do the negative portion of, say, a curl (not the concentric portion),
it should help rehab this forearm. So I lift a dumbell (light to moderate weight) with my right hand, pass it over to the left hand and do the negative. I do three sets of 8-10 reps.

Now, I’ve just begun to do these, so I can’t really comment one way or the other as to its efficacy (just fed up with not being able to do chin-ups). However, wanted to pass this on as a possible fix and ask if anybody here has had
any (good or bad) experiences with such a method.