Physiology: Brief Review

The Devil, who has paid a visit to the good citizens of Moscow, explains in "The Master And Margarita" that for his eternal punishment Pontius Pilate sits in outer space on a chair considering what the heck he was thinking when he sentenced to death
Jesus Christ. Every eon or so someone walks by Pontius and the chair and they have a brief discussion as to the events. Could have been worse punishment, possibly. We learn in the novel, there were mitigating circumstances.

Blogger eternal punishment, I'm thinking, will be spent re-reading your own blog as I've just done rereading posts 7/5/08 to 9/30/08 on cannon bone physiology during a single breeze.

A new reader that's interested might take a look. Good stuff to know and understand, lest we all become breeders.

The following refreshes the memory a bit. Please note that where I'd left it on 9/30 appears at the very end of this below, and is the point at which I'll continue next post.

the fracture process
-how does the mineral matrix react to force.
-load signals and load signaling, expansion, girding at point of max force.
-response to force aided by the flow of fluids in the bone center.
-bone proteins being squeezed together as springs in a mattress.
-critical strain
-shear mode
-tear mode
-ductility
-stress intensity factor
-energy release mode
--squeezing or pressing of material during weight bearing phase of the stride.
--the concept of rearrangement of material (instead of micro fracture).

speed of mineralization and re mineralization--slow instead of fast but likened to
mixing concrete at molecular level.
-2 months for a single understress collagen fibril to initially mineralize.
--30 days for a single damaged cell to repair.

how much damage in a single breeze in :12s
--240 strides or hits in a mile race.
--4% of bone cells at any point in time undergoing repair +
--1% bone cell destruction per breeze that must be repaired.
--cumulative damage in subsequent breezes = 1% +1% +1% etc.
-- the damage adds up.
--but repair of the 1% begins immediately.
--significance of exact state of repair at given point in time.

How to calculate when to do the next breeze
--how soon can we go again?
--what % of bone cell damage do we have at a given point in time?
--how soon must we go to continue bone remodelling?
--ideal breeze/race spacing for injury prevention.

Training:
Wed. 2/4: Cold. Riderless work--3 miles for Rod, 2 for Art who tweaked a leg and was immediately removed. Nothing big as it turns out. Nice snappy workout with several short 2f bursts of 90% speed. Rod is trying to drop out again here and there. Lazy?
Thurs: 2/5: Complete transformation in Rod tonight as this horse turns a planned 2 mile slow riderless work into a romp. Rod this time is pressing them all the way. What a difference in his attitude since yesterday. They end up with 3 miles riderless volume with short rests and at least 4f continuous full speed. Very hard work. Horses then each tacked a mile. Art canter. Rod: trot with a few hops.