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Signal stationarity in postural stability assessment of children

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4 Author(s)
Harris, G.F. ; Marquette Univ., Milwaukee, WI, USA ; Riedel, S.A. ; Matesi, D.V. ; Smith, P.A.

Research conducted to quantitatively evaluate the signal stationarity of the anterior-posterior (AP) and medial-lateral (ML) sway signal components so that the frequency content of those signals could be accurately assessed is summarized. The study focused on children and adolescents ranging in age from five to 14 years. The run test, which is used to identify an underlying time-varying trend in data that causes the probability of an event to change as time proceeds, and the reverse arrangements test, which is used to detect monotonic trends in data that contain significant frequency content below the run test cutoff, were used for data analysis. Results of the two tests are presented.<>

Published in:

Engineering in Medicine and Biology Magazine, IEEE  (Volume:11 ,  Issue: 4 )