Osteons, Exercise, And Fracture Resistance

Think I'm getting a fairly good handle now on this whole issue of FA. The fog is clearing to the point I'm able to criticize some of the scattered research I run into including some 2006 Osteon research from Dept. of Physical Education (think exercise physiology) at University of PA which shall appear ahead at the appropriate point.

The question of the moment is whether exercise impacts the osteons as to their size, volume, number and density resulting in increases in strength of bone materials AND whether the exercise schmetic affects whatever is the process.

Helps to understand osteons. In addition to the Wikepedia last post I ran into this:
http://www.trinity.edu/rblyston/bone/intro2.htm

highly informative page, and, too bad the other pages fail to appear!

Address questions one by one:

1. Does exercise increase the number of Osteons and hence the size or volume of the bone?

A miscellaneous thought might be--sure, lets increase Osteons on the theory that more are better and size increases strength. We conceive of this notion under the general idea of adaption of tissues to stress. Muscles get larger in the gym. Click on to Mr. Olympia contest on You Tube for 2007 when "mass" was in. Do bones also get larger like these muscles?

Have you listened to those NFL broadcasts complaining that the massive linemen get injured because of their little bones? They've increased their muscle mass beyond what the bones will carry. Probably there are reasons for lack of bone size corresponding to increases in muscle size which apply also to the cannon bones of our horses.

(As I'm suddenly in a hurry will continue tomorrow)--but, give the hint, there are bone size limits based on genetics, design, and function that will dictate the number of possible osteons.

Training:
Wed: 8/5 We begin the 3 day cycle per Preston Burch training. For what it's worth, I highly recommend Burch training.
Art: Expected to find the bruised hoof almost healed. Instead he comes walking up at the limp. Previously he'd only limped at the trot. Regression probably caused by romping with his buddies. Might have to confine the horse, we'll see. This will take 3 more days minimum. Hopefully we're without a coffin bruise.
Rod: slow work(:20s) in prep for speed tomorrow: .8 (length of our track this year) + .8 +.4 miles