Encyclopedia of Exercise Medicine in Health and Disease

2012 Edition
| Editors: Frank C. Mooren


Reference work entry
DOI: https://doi.org/10.1007/978-3-540-29807-6_2672

The energy converting cellular organelles present in all eukaryotic cells, called the “power house” of the cell. Mitochondria are essential to the process of oxidative phosphorylation, which generates most of the animal cell's ATP. In human locomotor skeletal muscle cells mitochondrial volume density is about 3–8%, being higher in slow contracting, type I muscle fibers than in fast contracting, type IIX muscle fibers.

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© Springer-Verlag Berlin Heidelberg 2012