title: A generalized strategy for measuring performance in the velocity-position phase plane.
abstract: Recent work has proposed the reformulation of smoothness measures derived from standard integrated squared jerk, as a function of position, not time. However, its promulgation was in the context of monotonic excursion data extracted from single degree-of-freedom (DOF) movements; the result was a formulation of a phase smoothness measure with limited generalizability. Here, we present a complete methodology for implementing the phase smoothness measure in arbitrary datasets, i.e. for multi-DOF movements with no assumptions of monotonicity in the kinematic profile. Additional suggestions are made for best practices.
authors.affiliation: VA Cooperative Studies Program Coordinating Center, VA Connecticut Healthcare System, West Haven, CT 06516, USA. michael.wininger@va.gov
authors.forename: Michael
authors.initials: M
authors.lastname: Wininger
mesh_terms: D000465:Algorithms; D001696:Biomechanical Phenomena; D003627:Data Interpretation, Statistical; D006801:Humans; D009422:Nervous System Diseases / Q000175:diagnosis*; D009483:Neuropsychological Tests / Q000592:standards*; D011597:Psychomotor Performance / Q000502:physiology*; D015203:Reproducibility of Results