Journal of Rehabilitation Research & Development (JRRD)

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

Stefan Schmid, PT, MA, et al.


Figure. 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.

The heel-rise movement at the end of the stance phase during normal walking has been repeatedly shown to have a major effect on energy expenditure. Being able to accurately assess calf muscle function is of high clinical importance. Ideally, the optimal method of doing so would be more robust than simply counting heel-rise repetitions and would also use equipment available in a clinical setting (i.e., not laboratory-based tools). The current study aimed to evaluate the use of trunk accelerometry as a cost-effective and easily applied alternative. The results showed that trunk accelerometry is a valid and reliable tool for the measurement of force and mechanical power generated by the calf muscles.

Volume 48 Number 9, 2011
   Pages 1137 — 1144


View HTML  ¦  View PDF  ¦  Contents Vol. 48, No. 9
This article and any supplementary material should be cited as follows:
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
ResearcherID: Stefan Schmid, PT, MA: E-8534-2010
Crossref

Last Reviewed or Updated  Monday, November 21, 2011 11:20 AM

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