Figure 4

Normalized root mean square (RMS) values during 3 min of intermittent knee extension in normoxia and hypoxia. Values are expressed percentage of normalized maximum voluntary contraction (MVC). The subject number was 10. *Significantly different from normoxia, p < 0.05. †Significantly different between inter-muscles of the quadriceps femoris in normoxia and hypoxia, p < 0.05.