Fig. 4From: Increase in carbon dioxide accelerates the performance of endurance exercise in rats a Electrophoretic analysis of myosin heavy chain isoforms. b The control group primarily expresses IIB fibres, as determined by the semi-quantification of the band, whereas the CO2 group mainly expresses IIB, IIA, and IID fibres. *p < 0.05; **p < 0.01Back to article page