Table 1.

Changes in the results of the Box & Block, Hand Grip and piano tests with the piano training.

Box & Block (# cubes)
Left Hand			Right Hand
before	after	% change	before	after	% change
15	17	13	63	62	−1.6
Hand Grip (psi)
Left Hand			Right Hand
before	after	% change	before	after	% change
4.5	1	−77	15	12.5	−16
Piano Test (mean stroke interval in ms from test session 1 to test session 6)
28 (session 1) > 31.8 > 35.9 > 33.5 > 35.8 > 34.1 (session 6)

For both the Box & Block as well as the Hand Grip tests an improvement in manual ability results in an increase in the number of cubes moved and in the grip force respectively. Only two test sessions were conducted, before and after the training. Piano tests were conducted six times during the training. In this case, an improvement reflects in a decrease in the mean stroke interval.