The Relationship Between Trunk Control and Hand Functions in Individuals With Parkinson's

"This device measures hand grip strength. The individual should be in an upright sitting position. There should be no arm support on the sitting surface. ...~The knee angle should be 90 degrees. Elbow angle should be 90 degrees. The wrist should be held without deviation. The measurement should be performed 3 times with an interval of 10 seconds."