Effects of Aging on Genioglossus Motor Units in Humans
Figure 5
Mean relative irregularity coefficient versus minimal oxygen saturation.
More complex motor unit potentials (MUPs), as calculated with the relative irregularity, are associated with minimal oxygen saturation detected from the overnight polysomnography. The Pearson correlation coefficient was calculated from the mean value of 37 subjects (r = 0.633; P = 0.0000267). The three squares on the X-axis represent relative irregularity coefficient data from subjects whose minimal oxygen data were not obtained (not included in the correlation).