I don't claim to be an expert on this. I'll leave that to the veterinarians and scientists. However, from my experience and reading etc. the same principles apply to both prevention and treatment of skeletal injury such as shin soreness. This was discussed elsewhere in relation to the bone conditioning of European horses coming to Oz.
I also don't mean to suggest that horses should be worked when they have severe acute shin soreness with considerable pain and inflammation which is maybe what Bid was referring to. However, hopefully these days not too many horses get to that point.
Anyway, I agree Freda with the point you seem to be making that to condition bone for firm surfaces, the bone needs to be exposed to work on firm surfaces. Where I thought the AWT would be helpful is that horses with beginning signs of shin soreness could continue to work on it, or resume work on it sooner, before being re-exposed to fast work on firmer surfaces, meanwhile still getting a degree of concussion that helped the bone healing and re-modelling without risking aggravation of the injury.
It will be interesting to see what impact the AWTs will have on the incidence of both shin soreness and catastrophic injury. I think training solely or primarily on an AWT then racing on a firm grass surface is a recipe for disaster.
So, after all that Freda, my short answer is I think it can help but on its own is not sufficient.
JMO. Interested in others' thoughts.