Recent Harvard Study Confirms HandShoe Mouse Principles

During our field study to develop the HandShoe Mouse, we noticed that a non supported arm resulted in complaints in neck and shoulders (Trapezius muscle). The advice to support the arm and let the hand rest on the body of the HandShoe Mouse quickly resulted in a reduction of complaints.
Our team of Erasmus University Medical Centre reported the field study in the paper “Result of the use of a hand supporting computer mouse by patients with neck and shoulder complaints” (2006).
These results are confirmed in the paper by Prof. Han Ming Chen “The effect on forearm and shoulder muscle activity in using different slanted computer mice” (2007).

Through the years we have been addressing the negative effects of the use of for example keyboard trays. This in view of the excessive muscle loads incurred due to forearm and hand not being supported.

Effects of Forearm and Palm Support

Therefore we are pleased that the recent study by the Harvard School of Public Health “Effects of forearm and palm supports on the upper extremity during computer mouse use” (2013) confirms these earlier studies.

In line with the above,Arm op Bureau 1-met vink web it is interesting to know that the use of a slanted mouse like the HandShoe Mouse prevents the possible negative effect of support of a forearm on a hard surface like a desktop. Of course a good alternative to provide the necessary support are chairs with armrests.

Desktops with sufficient space provide the significant advantage that one is free to move.

This contrary to arrangements which inhibit free movement and force a person in a rigid position without enough space to work e.g. put down papers etc.

In line with the above mentioned publications forearm and hand support are a prerequisite for a comfortable working position and to prevent unnecessary loads in Trapezius and deep neck muscles.

The End of Keyboard Trays and Mouse Platforms?

By: Drs. ing. Paul C. Helder

I think we all enjoyed the innovations presented during this year’s Ergo Expo in Las Vegas.

Of course various new innovative products were presented next to already well known products which are from the outset near to the optimal solution. These can therefore hardly be improved, because they have been developed based on medical research, like for example the HandShoe Mouse by Hippus.

A very obvious difference with previous shows was, as far as I have noted, the absence of keyboard trays with mouse platforms. Apparently the industry has seen the light.
Instead we now see a multitude of height adjustable desks.
These desks not only provides sufficient space to work, but, far more important, they allow you to support the forearm and thereby relax the Trapezius – and Deep Neck muscles.

Already in 2006, Professor Han Ming Chen addressed this point in his paper: The effect on forearm and shoulder muscle activity in using different slanted computer mice, published in Clinical Biomechanics.

Height Adjustable Desks: Free Movement

adjustable deskThe space provided by height adjustable desks allows free movement. One can sit far more comfortable and move keyboard and mouse around to ones heart’s content.
We are not robots, we should allow ourselves freedom of movement.
Also paperwork can now be readily available on the desk. And there is also plenty of room for your HandShoe Mouse!

The adjustable desk takes away the restriction of the cramped space dictated by the concept of the keyboard tray. Long and behold, we now even see micro desks to further increase the available desk space.

I hope that based on anatomical and bio-mechanical research the ergonomics industry will realize that concepts from the past do not always comply with the best solution. The keyboard tray was a perceived good alternative. However, everybody realized that restrictions prevailed. The adjustable desk and chair now provide a fitting solution based on fundamental scientific research.


Fundamental Research Proof For Slanted Mouse

handshoe mouse hand support

Fundamental research by a Dutch university has shown that extending your hand and continous hovering of your fingers above the buttons of a conventional computer mouse causes an un-interrupted excessive load of your hand and fingers. The same study shows that this is also the case when using most, so called, ergonomic mice.  Professor Han-Ming-Chen of national Taiwan university proved that the use of any non-slanted mouse will cause discomfort in your forearms and shoulders while using a mouse with a suitable slanted angle provides a more neutral hand position. It reduces forearm and shoulder muscle activity and thus the risk of RSI and carpal tunnel syndrome.

A too large slanted angle will again result in higher muscle activity and thus increase risk. On top of this it has been shown that continuous low intensity muscle activity may damage the finer muscle tissue, also known as the cinderella effect.

Field research has shown that the ideal, slanted HandShoe Mouse fulfills all ergonomic requirements as concluded from the world wide, extensive, university based research.

Watch the one minute ergonomic mouse video: