Table 1. Echo intensity (EI) of the median nerve and flexor muscles of the forearm, and the contrast between the nerve and muscle in the young and elderly subjects.

	Young (n=13)	Elderly (n=13)	p-value
EI of median nerve	126 (11.6; 119–133)	153.3 (13.1; 144.5–162.2)	<0.0005
EI of flexor muscles	50.7 (5.3; 47.4–53.9)	90.2 (15.6; 79.7–100.6)	<0.0005
Contrast between the nerve and muscle	75.3 (13.4; 67.2–83.4)	63.2 (15.2; 52.9–73.4)	0.04

Data are presented as mean (standard deviation; 95% confidence interval). p<0.05 was considered statistically significant.