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. Author manuscript; available in PMC: 2014 Nov 1.
Published in final edited form as: Exp Brain Res. 2013 Aug 13;231(1):51–63. doi: 10.1007/s00221-013-3665-3

Table 1.

The combinations of target total force (FTOT) and moment of force (MTOT)

FTOT (%MVC) MTOT
SU PR
45 −4.0 −3.5 −3.0 −2.5 −2.0 −1.5 −1.0 −0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
40 −3.5 −3.0 −2.5 −2.0 −1.5 −1.0 −0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
35 −3.0 −2.5 −2.0 −1.5 −1.0 −0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0
30 −2.5 −2.0 −1.5 −1.0 −0.5 0.0 0.5 1.0 1.5 2.0 2.5
25 −2.0 −1.5 −1.0 −0.5 0.0 0.5 1.0 1.5 2.0
20 −1.5 −1.0 −0.5 0.0 0.5 1.0 1.5
15 −1.0 −0.5 0.0 0.5 1.0
10 −0.5 0.0 0.5
5 0.0

The levels of target FTOT and MTOT were given as the percent of four fingers MVC (maximal voluntary contraction) and multiples of 1PR, respectively. 1PR was defined as the product of 7% index finger MVC by the lever arm of the index finger (4.5 cm). The {FTOT; MTOT} combinations shown in bold were performed 20 times each for the analysis of multi-finger synergies.