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Research Objectives
To investigate the validity and reliability of the PostureRite system as a dynamic
postural instability measurement device in children with CP, as well as the link between
the PostureRite and traditional clinical measures, including the GMFM, PBS, and FES.
Design
Randomized Controlled Trial.
Setting
The first study was performed in the motion analysis laboratory to determine the concurrent
validity of new accelerometers compared to the Vernier. The second study was in a
local community rehabilitation center to determine the reliability and sensitivity
of the PostureRite for healthy adults and children with CP.
Participants
11 healthy young adults and 10 children with CP were recruited from a major university
and local community rehabilitation center.
Interventions
The DPI measurement was the body sway with an accelerometer device (X, Y, and Z-axis),
performed in the highest GMFM level possible. All participants had familiarizing period
with the crawling and gait movement before actual data collection. For performing
the standardized gait movement consistently, all participants were instructed to walk
7m back and forth three times at the preferred speed.
Main Outcome Measures
3-axis body sway measures were recorded by the PostureRite and Vernier, as well as
GMFM, PBS, and FES to identify the connection between the accelerometer and the traditional
clinical measure score.
Results
The concurrent validity analysis showed a relationship between the Vernier and PostureRite,
P<0.05. The test-retest reliability demonstrated a good relationship across the three
repeated measures of the DPI data, P<0.05. The PostureRite sensitivity analysis revealed
a significant discriminability in DPI data between the healthy and individuals with
CP (P<0.05). GMFM and PBS scores were inversely correlated with the X-axis (P<0.05).
The correlation of FES scores and the X-axis was moderate (P<0.05).
Conclusions
This study shows promise as a robust and reliable technique for assessing a wide variety
of gait parameters in children with cerebral palsy. In a variety of situations, including
outcome and screening studies, this device can be utilized in conjunction with clinical
balance and mobility assessments.
Author(s) Disclosures
The authors report no conflict of interest.
Keywords
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© 2022 Published by Elsevier Inc.
