Distance And The Trainers

So, in support of 4f as the minimum FR distance, so far:
1. The hand clapping experiment that indicates the sensation of engagement in response to concussion. We could presumably conjure up additional experiments of that sort.
2. Supposition as to precisely what occurs at each stride of the breeze at the bone nano level from 1f, 2f,3f,4f, 5f, 6f. In this regards it is believed as follows:
2.5f bone cell/bone lattice--bone materials in general--have become fully engaged. Prior to this point in the :12.5/sec breeze(or faster) engagement is incomplete.
3f The horse has now completed another 10-15 strides with processes fully engaged. There is some minimal FR-remodeling effect at this point!
3-4f My supposition was to carry the breeze at least to 4f for minimal FR sufficiency. That would be--after the 2.5f mark--about 40-45 strides with hoof to ground contact of maybe .5 sec/stride. After 45 engaged strides my belief is that the bone (again--in minimum terms) will experience the post race FR effects that have been posted.
5f is better.
6f Probably this is the range of possible distances where FR effect of the work starts to optimize.
6.5f Is the distance where I have pegged that in terms of bone remodeling going farther will have very little effect--i.e. 6.5 F is enough to get the post race FR processes fully working, and going farther probably adds very little to FR. Please note there is a whole lot of supposition, albeit educated guess type supposition, and zero research for that last statement. After traveling some specific distance, obviously, the horse will be without further FR benefit. I peg this at 6.5f.

And then--
3. Circumstantial Evidence provided by our trainers. I am supposing that these conventional (as defined on this blog) trainers and their slightly more aggressive enlightened peers, such as the late Bobby Frankel, over a period of time with endless numbers of horses start to recognize what works and fails to work in terms of FR. The trainer thought process would be: " hey, if we breeze e.g. 3f we get injuries, whereas, if we breeze 4f we get less, and 5f is better. Frankel fairly obviously--if you look at what he was doing between 1985 and 2000--decided he was satisfied in terms of injury prevention by preparing horses by adhering fairly consistently to 3 months of once a week breezes up to 6f for 1st race prep, and thereafter a combo of once a week 4fs in :48 combined with racing every 2-3 weeks was enought to produce FR.

With Frankel it was 4f + racing after racing had begun. Q--can you get to FR breezing 4f without racing, next post.
Training:
Wed. 2/16 Off.
Thurs. 2/17 4 times up and down the hill, walk down due to the knee, trot up. After the horse was unsaddled did a little pasture running with 3 or 4 nice spurts. The vid is of the knee as it appears last thurs. still about the same.