Comparison
of a laboratory grade force platform with a Nintendo Wii Balance Board on
measurement of postural control in single-leg stance balance tasks.

Huurnink A, Fransz DP, Kingma I, and
van Dieen JH. J Biomech. 2013;
46:1392-1395.
           
Take
Home Message: The Wii Balance Board is an acceptable substitute for measuring
the center of pressure during single leg stance balance tests.

While a laboratory grade force plate
is the gold standard for both testing and training balance, these force plates
are limited to research laboratories. Due to the importance of balance testing
and training during the rehabilitation process, a cost effective, widely
available and portable force plate is desirable. Therefore, Huurnink and
colleagues compared a laboratory grade, in-floor force plate to the Wii
Balance Board (WBB). Fourteen (6 male, 8 female) healthy participants were
recruited and took part in this study. All participants performed 10 sets of 3
exercises (single leg stance with eyes open, single leg stance with eyes
closed, and single leg stance after a short hop). All trials were completed on
the WBB which was positioned on a force plate to allow for simultaneous measurement and
control within subject variability. All participants were told to hold the
stance as long as possible, keeping their hands on their hips, and focus on a
point 2 meters in front of the force plates. If during a trial, the participant
moved their stance leg or touched the ground with their contralateral leg, the
trial was thrown out. Both the mean center of pressure sway (the average
distance the center of pressure moved during the balance trial) and center of
pressure path velocity (the velocity at which the center of pressure moved)
were measured and analyzed as these parameters are considered the gold standard
for balance performance. Overall, mean center of pressure sway and center of
pressure path velocity for all trials on the force plate and WBB were similar. This data
suggests that although not exact, the WBB is a sufficient alternative to a force plate when measuring the center of pressure during single leg stance balance tests.

Overall, the data presented in this
study suggests that the WBB is comparable to the force plate and can be implemented in
clinical practice. While there was a slight overestimation with the WBB
compared to the force plate, it was very consistent and the utilization of the WBB
offers clinicians an inexpensive and widely available option to implement
measurable, balance exercises into their treatment regiment. While this will
surely be attractive to clinicians, caution should be exercised when interpreting
this data. The WBB is limited to measuring center of pressure; therefore, it
should conceivably be used for rehabilitation exercises and not for research
purposes. Further, little detail was given as to the availability of the data
collection program used. Ultimately, this data gives clinicians an accurate and
widely available tool to use in balance training. Further, using a gaming
system in a rehabilitation setting may be seen as a more enjoyable experience
to those patients receiving the treatment. The WBB can also give clinicians the
power to easily implement a home exercise program due to the popularity and
ease of access to the WBB. 

Tell us what you think. Would you consider
implementing the WBB into your rehabilitation regime if widely available? If
not, do you see any other potential uses for this technology in your clinical
practice?

Written by: Kyle Harris
Reviewed by:  Stephen Thomas

Huurnink A, Fransz DP, Kingma I, & van Dieën JH (2013). Comparison of a laboratory grade force platform with a Nintendo Wii Balance Board on measurement of postural control in single-leg stance balance tasks. Journal of Biomechanics, 46 (7), 1392-5 PMID: 23528845