Table 4 Number of trials needed to reach good performance stability and test–retest reliability (ICC > 0.75)

Temporal and end-point kinematics

Total movement time (s)

2

2

2

2

2

MT reaching (s)

3

3

5

4

3

MT forward transport (s)

2

3

2

2

2

MT drinking (s)

2

2

2

2

2

MT back transport (s)

2

2

2

2

2

MT returning (s)

5

8

8

8

–

NMU total

3

–

2

2

2

NMU phase 1&2

6

9

3

2

2

NMU phase 4&5

6

–

2

3

2

Peak velocity (mm/s)

2

2

3

2

–

Time to peak velocity (%)

3

6

–

6

–

Peak elbow angular velocity (°/s)

2

2

2

2

2

Angular and displacement kinematics (arm and trunk)

Shoulder abduction reaching (°)

2

2

2

2

2

Shoulder abduction drinking (°)

2

2

2

2

2

Shoulder flexion reaching (°)

2

2

2

2

2

Shoulder flexion drinking (°)

2

2

2

2

2

Elbow extension reaching (°)

2

2

2

2

2

Elbow flexion drinking (°)

2

2

2

2

2

Wrist angle (°)

2

2

2

2

6

Inter-joint coordination, r

4

4

2

2

2

Trunk displacement (mm)

2

2

2

2

2