Reliability and validity of trunk accelerometry-derived performance measurements in a standardized heel-rise test in elderly subjects

Stefan Schmid, Roger Hilfiker & Lorenz Radlinger
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...
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