Article

This cross-sectional study evaluated the intrasession reliability and concurrent
validity of trunk accelerometry (with force plate measurements) for vertical
ground reaction force and external mechanical power recorded during a
standardized heel-rise (HR) test in 54 elderly subjects (mean +/- standard
deviation age 81.2 +/- 6.4 yr).Peak force as well as peak and average power
revealed intraclass correlation coefficients of >0.75 and low standard errors of
measurement for both the force plate- and the accelerometer-based curves.
Correlation coefficients for these variables ranged from 0.95 to 0.98. The
accelerometry-derived variables indicated significantly lower absolute
values.Trunk accelerometry can be used as a reliable and valid tool for the
quantification of the HR test in the elderly population. However, due to several
limitations in the protocol, the use of this tool can currently only be
recommended in a test-retest manner. Therefore, more research is needed to fully
validate this tool for clinical use.

Langue : ANGLAIS