Title
Capture, learning, and classification of upper extremity movement primitives in healthy controls and stroke patients
Abstract
There currently exist no practical tools to identify functional movements in the upper extremities (UEs). This absence has limited the precise therapeutic dosing of patients recovering from stroke. In this proof-of-principle study, we aimed to develop an accurate approach for classifying UE functional movement primitives, which comprise functional movements. Data were generated from inertial measurement units (IMUs) placed on upper body segments of older healthy individuals and chronic stroke patients. Subjects performed activities commonly trained during rehabilitation after stroke. Data processing involved the use of a sliding window to obtain statistical descriptors, and resulting features were processed by a Hidden Markov Model (HMM). The likelihoods of the states, resulting from the HMM, were segmented by a second sliding window and their averages were calculated. The final predictions were mapped to human functional movement primitives using a Logistic Regression algorithm. Algorithm performance was assessed with a leave-one-out analysis, which determined its sensitivity, specificity, and positive and negative predictive values for all classified primitives. In healthy control and stroke participants, our approach identified functional movement primitives embedded in training activities with, on average, 80% precision. This approach may support functional movement dosing in stroke rehabilitation.
Year
DOI
Venue
2017
10.1109/ICORR.2017.8009305
2017 International Conference on Rehabilitation Robotics (ICORR)
Keywords
Field
DocType
Activities of Daily Living,Aged,Aged, 80 and over,Algorithms,Female,Humans,Male,Middle Aged,Monitoring, Physiologic,Movement,Stroke,Stroke Rehabilitation,Task Performance and Analysis,Upper Extremity
Positive predicative value,Rehabilitation,Functional movement,Sliding window protocol,Computer science,Accelerometer,Stroke,Speech recognition,Physical medicine and rehabilitation,Hidden Markov model,Logistic regression
Conference
Volume
ISSN
ISBN
2017
1945-7898
978-1-5386-2297-1
Citations 
PageRank 
References 
2
0.40
13
Authors
10
Name
Order
Citations
PageRank
Jorge Guerra120.40
Jasim Uddin220.40
Dawn Nilsen321.07
James McInerney422610.76
Ammarah Fadoo520.40
Isirame B Omofuma620.40
Shatif Hughes720.40
Sunil K. Agrawal826957.02
Peter K. Allen93089268.12
Heidi M Schambra1021.07