Table 2. Optimal frequencies within the high function [HF] group for specific outcome measures studied. Low function [LF] group showed no significant changes when pre and post intervention measures were compared.

Measure	Frequency	Significance (P)
Grip	High (40 Hz)	< 0.001*
Lateral Pinch	High (40 Hz)	0.04*
Palmar Pinch	High (40 Hz)	0.36
Tip Pinch	High (40 Hz)	0.08
Minnesota Dexterity	Low (20 Hz)	0.02*
Endurance	Low (20 Hz)	0.02*
MVC	High (40 Hz)	0.75
RMS	High (40 Hz)	0.02*

MVC - Maximal voluntary isometric contraction of thumb adduction; RMS - Root mean square of EMG during maximal voluntary isometric contraction of thumb adduction;

^*significant at the alpha ≤ 0.05 level.