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This study assesses the reliability and validity of trunk accelerometry-derived performance measurements, including peak force, time to peak force, rate of force development, total time, peak power, and average power in a standardized heel-rise test for elderly individuals. The research provides valuable insights into assessing physical performance in older populations using advanced technology.
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Figure 1. Definition of variables: peak force (Fmax) (body weight), time to peak force (tFmax) (seconds), rate of force development (RFD) (body weight/seconds), total time (tTotal) (seconds), peak power (Pmax) (watts/body weight), and average power (Pmean) (watts/body weight) as well as starting and ending points. Schmid S, Hilfiker R, Radlinger L. Reliability and validity of trunk accelerometry-derived performance measurements in a standardized heel-rise test in elderly subjects. J Rehabil Res Dev. 2011;48(9):1137-44.DOI:10.1682/JRRD.2011.01.0003