https://www.gaitposture.com/article/S0966-6362(18)30883-X/abstract
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The
Gait Deviation Index (GDI) [1] and the Gait Profile Score [2] are two
widely used scores for classification in clinical gait analysis. The
principle of these scores is to compute the distance of time-normalized
kinematic data to a standard, without considering phase and temporal
information. Longer stance phases, greater on the unaffected limb, are
common compensations in post-stroke hemiparetic gait [3], where
paradoxically theses gait scores are often "better" for the affected
limb. The objective of this work is to propose a method for computing
these scores in order to make them invariant to temporal compensations,
especially to stance phase extension.
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