Summary II
7. The questions posed: is there an "ideal" state of calcification for our race horses, and may exercise affect this? Does an exercised bone contain different quantities, quality, density of calcium? Answering the questions requires technical knowledge, For future reference we need remember only our conclusions.
8. Bone material over the eons establishes a balance or equilibrium between construction and destruction--osteoblasts/osteoclasts. Are these processes affected by concussive stress?
9. Several videos show the organization and construction of bone, Nov. 09--osteons, osteocytes, lamelae, fiber organization etc.
10. 11/18/09 we stumble onto some research and start to see answers. U. of Utah Dept. of Orthopedic Surgery (2005):
First--for understanding--were do bone mineral salts that comprise bone come from? What part of the bone produces mineral salts? After we pin point where mineral salts/calcification originates we may then focus on the method and manner in which the mineral salts are layed down, and then how stress/exercise might affect this process. Note that the 11-12/09 posts describe these complexities in detail.
Mineral salts originate in the osteocytes cells that permeate cortical bone(Edit--this statement probably is incorrect. What originates in osteocytes are newborn Type I bone collagen cells which will be secreting mineral salts as they age.). The U. Of Utah study interestingly determines that stress/exercise fails to produce any increase in the number of osteocytes or the manner in which they function--i.e. in this instance they are unable to see any affect of stress on the calcifying structures! We will learn later that the exercise effect, instead of being on number of cells or any increase in the amount of mineral salt production, is on the manner and mode in which the mineral salts are deposited.
11. Next I ran into the S.W. Research Institute article indicating there is a definite exercise effect on mineral salt production, contrary to the implications of the U. of Utah study. Continue next post.
Training:
Mon. 10/15 4th straight day of walk. Nob tried trotting. No way on this ground with the horse's head pointed skyward. I have never seen our pasture ground in this bad a condition.
8. Bone material over the eons establishes a balance or equilibrium between construction and destruction--osteoblasts/osteoclasts. Are these processes affected by concussive stress?
9. Several videos show the organization and construction of bone, Nov. 09--osteons, osteocytes, lamelae, fiber organization etc.
10. 11/18/09 we stumble onto some research and start to see answers. U. of Utah Dept. of Orthopedic Surgery (2005):
First--for understanding--were do bone mineral salts that comprise bone come from? What part of the bone produces mineral salts? After we pin point where mineral salts/calcification originates we may then focus on the method and manner in which the mineral salts are layed down, and then how stress/exercise might affect this process. Note that the 11-12/09 posts describe these complexities in detail.
Mineral salts originate in the osteocytes cells that permeate cortical bone(Edit--this statement probably is incorrect. What originates in osteocytes are newborn Type I bone collagen cells which will be secreting mineral salts as they age.). The U. Of Utah study interestingly determines that stress/exercise fails to produce any increase in the number of osteocytes or the manner in which they function--i.e. in this instance they are unable to see any affect of stress on the calcifying structures! We will learn later that the exercise effect, instead of being on number of cells or any increase in the amount of mineral salt production, is on the manner and mode in which the mineral salts are deposited.
11. Next I ran into the S.W. Research Institute article indicating there is a definite exercise effect on mineral salt production, contrary to the implications of the U. of Utah study. Continue next post.
Training:
Mon. 10/15 4th straight day of walk. Nob tried trotting. No way on this ground with the horse's head pointed skyward. I have never seen our pasture ground in this bad a condition.
posted by rather rapid at
12:12 PM
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