Research and results

A comparison between the HandShoeMouse and a conventional computer mouse using electromyogram (EMG) measurements shows the difference in muscle activity of the hand and fingers, due to gripping and pinching. When working with the HandShoeMouse there is hardly any signal which means the muscles are relaxed. However, working with a conventional (computer) mouse evokes a substantial signal which means high muscle tension.

  Hand on HandShoeMouse:              Hand on other mouse:

  EMG Measurement HSM:                 EMG measurement other mouse:

EMG signal extensor muscles
Red line: extensor carpi radialis longus
Yellow line: extensor carpi radialis brevis

When using a conventional computer mouse one is obliged to almost continuously lift the fingers to prevent inadvertent switching. This may lead to over exertion of certain muscles in arms and hands, the extensor muscles. As a result of this exertion, excessive tension in the deep neck muscles may occur. When these muscles are tense they can virtually close the gate between the first rib and clavicular bone. Blood vessels and nerves that pass through this gate may be pinched, blood circulation will be hampered (possibly also resulting in carpal tunnel syndrome).

The objective of our development was to realize a contour which allows for a relaxed hand position. The resulting shape of the mouse fully supports the hand. Only a minor contraction of the muscles of the fingers is required to operate switches and scroll wheel. Arms and hands remain in a relaxed position. This contrary to a conventional computer mouse which requires continuous lifting of the fingers and thus muscle action. The design of the contour of this ergonomic mouse matches the hand in its naturally relaxed position.

See also: Evaluation of 8 Ergonomic Computer Mice (PDF 3,1 Mb) 

and read for more information:

As it is essential that the HandShoeMouse fits the hand like a glove, it is produced in a number of standard sizes for both the left and the right hand.

Watch the video:

HandShoeMouse vs. conventional mouse