The Association Between Fiber Type Distribution and Metabolic Capacity

The maximum activity of AHAD so as I mentioned a key enzyme in fat metabolism and beta oxidation was 52 percent higher in the leg compared to the arm muscles. In terms of fiber size they found no significant difference in average fiber size between type 1 and type 2a or 2x fibers in the leg muscle however in the arm muscle type 2a fibers were significantly larger than type 1 fibers. Next they looked at mitochondrial content directly so they already discussed how citrate synth phase is a marker for mitochondrial content but in this study they actually used the transmission electron microscopy to look directly into the muscle cells  and calculate make calculations like content calculate and measure the actual mitochondrial content and volume in proportion to