Muscle structural capacity for oxygen flux from capillary to fiber mitochondria

Exerc Sport Sci Rev. 2002 Apr;30(2):80-4. doi: 10.1097/00003677-200204000-00007.

Abstract

The concept of major functional resistance to O2 flux at the capillary-fiber interface implies that muscle structural capacity for O2 flux from capillary to fiber mitochondria needs to be assessed in terms of capillary surface per fiber surface. Morphological data support this notion and show the importance of assessing the size of the capillary-fiber interface relative to muscle fiber O2 demand.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.
  • Review

MeSH terms

  • Animals
  • Capillaries / metabolism
  • Exercise / physiology
  • Humans
  • Mitochondria, Muscle / physiology*
  • Muscle Contraction / physiology
  • Muscle, Skeletal / blood supply*
  • Muscle, Skeletal / metabolism*
  • Oxygen / metabolism*
  • Oxygen Consumption / physiology
  • Physical Conditioning, Animal / physiology

Substances

  • Oxygen