. Author manuscript; available in PMC: 2010 Feb 23.

Published in final edited form as: J Electromyogr Kinesiol. 2010 Feb;20(1):148–154. doi: 10.1016/j.jelekin.2008.12.003

Table 1.

Demographics for each of the subjects groups. Significant differences between the OA groups and control groups are shown with the (^*). Standard deviations are shown in below the mean (SD).

	Group
	Control	Moderate	Severe
Sample size	18	16	8
Gender (males)	8	6	3
Age (years)	61.0	62.8	62.2
	11	10	8
SS speed (m/s)	1.25	1.14^*	1.05^*
	0.19	0.12	0.20
Fast speed (m/s)	1.75	1.53^*	1.4^*
	0.22	0.20	0.21
Change in speed (%)	40	35	35
	12	18	23