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. Author manuscript; available in PMC: 2024 Dec 6.
Published in final edited form as: J Alzheimers Dis. 2018 Jan 1;63(1):331–341. doi: 10.3233/JAD-171116

Figure 1.

Figure 1

(a) Example of body worn monitor placement for both the clinic based and free-living data collection on L5 centrally located on the lower back; (b) Gait protocols for clinic and home based assessments for the D&FP feasibility study; (c) The raw vertical acceleration signal segmented into walking bouts (d) Left; Example of gait characteristic extraction from walking bouts: detecting initial contacts (black stars) and final contacts (white circles). Right: Identification of walking bouts (black bars) from free-living data from which gait characteristics are extracted; (e) Left: Conceptual model of gait representing domains and 14 gait micro characteristics. Right: Macro characteristics of gait described by domains of volume, pattern and variability.