Research Article

Quantitative Assessment of ADL: A Pilot Study of Upper Extremity Reaching Tasks

Figure 1

Examples of commonly used techniques with features considered for ADL performance measurement. Feature-based performance evaluation (FPE) is primarily based on kinematic or kinetic measurements. Dynamic measurements such as number of velocity peaks [34], number of zero-crossing tangential accelerations [35], dimensionless jerk metrics [29], and spectral arc-length [32] are used in techniques such as VP, ZCA, DJ, and SAL, respectively, in the literature. Our proposed entropy of shape and instantaneous acceleration (ESA) introduced in this paper uses both shape and kinematic based measurements. Kinetic-related features, such as moment [36], force [37], and torque [38], have also been investigated.