To identify theglycolytic potentialof muscle fibers, we use a histochemical assay for a-GlyceroPhosphate Dehydrogenase (aGPD).
During anaerobic activity, ATP is generated in the cell cytoplasm of muscle cells using glycolysis.
aGPD is an enzyme that transports NADH needed for ATP production, into the mitochondria.
因此aGPD gl活动直接相关ycolytic activity of a muscle cell.
Glycolytic muscle fibers will appear darker than non-glycolytic when using this test.

Fig.1 aGDPH staining of skeletal muscle