dominant arm

non-dominant arm

rest

contraction

(%)

rest

contraction

(%)

middle

mean

8.4

14.0

169.4

7.0

11.9

172.8

SD

0.9

2.1

43.2

1.5

1.6

14.5

lower

mean

5.3

7.4*

139.6

3.9

5.2

136.9

SD

0.7

1.1

21.8

0.7

0.6

39.3