Table 1 Main kinematic movement parameters (mean ± std across subjects) for the three speed (S, N, F) and two load (no load, with load) conditions.

From: Adaptive use of interaction torque during arm reaching movement from the optimal control viewpoint

 

No load

With load

S

N

F

S

N

F

MD (s)

0.85 ± 0.15

0.49 ± 0.07

0.32 ± 0.06

0.84 ± 0.14

0.52 ± 0.08

0.35 ± 0.07

Shinternal/external (°)

11.3 ± 6.6

12.5 ± 6.3

14.1 ± 6.3

11.2 ± 5.5

12.7 ± 5.8

12.2 ± 6.2

Shelevation/depression (°)

10.3 ± 7.0

11.4 ± 6.3

11.8 ± 6.5

9.9 ± 5.3

10.6 ± 5.2

11.2 ± 5.2

Shulnar/radial (°)

96.4 ± 16.1

98.8 ± 15.9

100.5 ± 16.1

97.0 ± 15.1

99.5 ± 14.9

101.7 ± 16.1

Elextension/flexion (°)

14.7 ± 8.6

14.6 ± 7.6

14.7 ± 6.9

13.1 ± 8.6

12.4 ± 8.7

12.9 ± 8.2

REAP (%)

76.3 ± 7.9

74.2 ± 9.3

73.6 ± 9.3

74.4 ± 8.2

72.0 ± 8.9

71.3 ± 9.6

Cur

0.18 ± 0.03

0.17 ± 0.03

0.16 ± 0.03

0.18 ± 0.03

0.17 ± 0.03

0.16 ± 0.04

Za (cm)

0.8 ± 0.7

0.7 ± 0.7

0.6 ± 0.4

0.7 ± 0.6

0.6 ± 0.6

0.6 ± 0.5

Zp (cm)

0.7 ± 0.2

0.8 ± 0.3

0.9 ± 0.5

0.7 ± 0.2

0.8 ± 0.3

0.8 ± 0.3