The use of forearm and hand support is associated with less shoulder muscle activity and shoulder torsion while palm support is associated with less wrist extension. This type of support also results in lower applied forces to the mouse body. Participants reported less musculoskeletal discomfort when using a support.
It should be noted that some aspects addressed in this paper must also be looked at from the perspective of findings by other researchers presented in this overview of publications.
Onyebeke LC, et al. Department of Environmental Health, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA.
Applied Ergonomics 2013 Sep 18. pii: S0003-6870(13)00158-0. doi: 10.1016/j.apergo.2013.07.016.