Dynamic Variability of Isometric Action Tremor in Precision Pinching

Table 3

Means and standard deviations of tremor variables stratified by task region with respect to cue marker objective.

Grouping^a	𝑛^b	Thumb power^c	Index Finger power^c	Concordance phase
PD departing	396	61 (100)	30 (14)	137 (21)
PD cruising	396	69 (81)	27 (6)	136 (18)
PD approaching	396	345 (437)*	76 (52)	127 (20)*
OA departing	398	22 (3)	21 (1)	157 (11)
OA cruising	398	21 (1)	21 (1)	157 (11)
OA approaching	398	23 (4)	22 (3)	150 (12)*

PD: Parkinson's disease participants.
OA: older well adults.
*Significant.
^aBased on task segment region with respect to cue marker objective.
^bTotal number of application and release task segments in the grouping.
^cPower units are in mN²/sampling.