Table 1.

Gripping conditions of the experimental tool in the preliminary experiment to evaluate the influence of the elements for a pinch grip motion on a handle

Condition no.	(1)	(2)	(3)	(4)	(5)
Use of handle	o	o	o	o
Classification of gripping type	Power	Combined	Combined	Combined	Pinch
Adjustable element for pinch grip motion	Completely constrained	Distance	Direction	Distance and direction	No constraint