"cientist Luca Bein at the University of Zurich in 1983 brought to light interesting findings about shock absorption in the hoof, comparing it in unshod and shod (with various materials) hooves. According to his study, a hoof shod with a normal metal shoe lacks 60-80% of it natural shock absorption.
Again, that's just not good enough. Was the hoof trimmed properly before being shod? Was the hoof shod properly? Was the data actually translated correctly? It doesn't appear that the study included any data based on different surfaces. There's no mention of stress on joints and soft tissue of a barefoot horse vs shod a horse on slippery surfaces. And so on... It's far too one-sided with many variables unchecked for me to take seriously.
The frog is still suppose to touch the ground FIRST on a shod horse. In most cases it does NOT because the foot is not done properly and that would be increased to 99% of the time on a none-movable surface. At least if the horse is on yielding ground, the foot/shoe can sink into the surface and the frog can come in contact and do it's job.
There's an increase in hoof wall concussion...well duh, look at the video...the horse is landing on ONE WALL then the foot is smacking down onto the other wall. That is NOT how a hoof should be landing, so of course there's going to be tremendous concussion on the hoof wall. The foot is not trimmed properly. Incorrect trimming beneath a steel shoe WILL cause concussion rates to rise exponentially.
Logically, there's more concussion with hard, immovable object against hard, immovable object. That's why we know it's not a good thing to run horses on hard surfaces...shoes or no shoes. The difference though being, with no shoe the frog gets to work properly...sometimes...because even then most times the feet are not trimmed correctly and the frog doesn't get to work even if the horse is barefoot.
He also found that "A shod foot moving on asphalt at a walk receives three times the impact force as an unshod foot moving on on asphalt at a trot."
Who cares? We don't work horses on asphalt, shod or barefoot. This type of statement is completely irrelevant and only shows the disconnect between scientist and horse management.
"That metal shoes increase concussion / vibration is not in question, it is long proven and accepted - this is a main reason for the development of all manner of pads and even rubber shoes in an attempt to prevent increased concussion - indeed pads have been show to offer less concussion, but do not negate the other negative effects on the hoof"
What other negative effects?
I don't mean to sound one sided if I do, I think there are multiple situations where shoes would be the smarter choice. I just don't see why it is assumed that horses need shoes. A horse should be evaluated first before shoes are deemed necessary, there is no need to put shoes on a horse unless it has benefits.
Who's assuming horses need shoes? Point them out.
I've yet to come across one of these barefoot vs shod threads where the people in support of shoeing horses have ever said that.
IN FACT, most of the time it's the barefoot people claiming that all horses can go barefoot, NOT people who shoe their horses saying all horses need shoes.