Abstract
Abstract
Background
The increasing demands concerning stroke rehabilitation and in-home exercise promotion grew the need for affordable and accessible assistive systems to promote patients’ compliance in therapy. These assistive systems require quantitative methods to assess patients’ quality of movement and provide feedback on their performance. However, state-of-the-art quantitative assessment approaches require expensive motion-capture devices, which might be a barrier to the development of low-cost systems.
Methods
In this work, we develop a low-cost virtual coach (VC) that requires only a laptop with a webcam to monitor three upper extremity rehabilitation exercises and provide real-time visual and audio feedback on compensatory motion patterns exclusively from image 2D positional data analysis. To assess compensation patterns quantitatively, we propose a Rule-based (RB) and a Neural Network (NN) based approaches. Using the dataset of 15 post-stroke patients, we evaluated these methods with Leave-One-Subject-Out (LOSO) and Leave-One-Exercise-Out (LOEO) cross-validation and the $$F_1$$
F
1
score that measures the accuracy (geometric mean of precision and recall) of a model to assess compensation motions. In addition, we conducted a pilot study with seven volunteers to evaluate system performance and usability.
Results
For exercise 1, the RB approach assessed four compensation patterns with a $$F_1$$
F
1
score of $$76.69 \%$$
76.69
%
. For exercises 2 and 3, the NN-based approach achieved a $$F_1$$
F
1
score of $$72.56 \%$$
72.56
%
and $$79.87 \%$$
79.87
%
, respectively. Concerning the user study, they found that the system is enjoyable (hedonic value of 4.54/5) and relevant (utilitarian value of 4.86/5) for rehabilitation administration. Additionally, volunteers’ enjoyment and interest (Hedonic value perception) were correlated with their perceived VC performance ($$\rho = 0.53$$
ρ
=
0.53
).
Conclusions
The VC performs analysis on 2D videos from a built-in webcam of a laptop and accurately identifies compensatory movement patterns to provide corrective feedback. In addition, we discuss some findings concerning system performance and usability.
Funder
fundação para a ciência e a tecnologia
Publisher
Springer Science and Business Media LLC
Subject
Health Informatics,Rehabilitation
Reference31 articles.
1. Meadmore KL, Hallewell E, Freeman C, Hughes AM. Factors affecting rehabilitation and use of upper limb after stroke: views from healthcare professionals and stroke survivors. Top Stroke Rehabil. 2019;26(2):94–100.
2. Billinger SA, Arena R, Bernhardt J, Eng JJ, Franklin BA, Johnson CM, Mackay-Lyons M, Macko RF, Mead GE, Roth EJ, Shaughnessy M, Tang A. Physical activity and exercise recommendations for stroke survivors: a statement for healthcare professionals from the American Heart Association/American Stroke Association. Stroke. 2014;45(8):2532–53.
3. Levin MF, Kleim JA, Wolf SL. What do motor “recovery’’ and “compensationg’’ mean in patients following stroke? Neurorehabilitation Neural Repair. 2009;23(4):313–9.
4. Semenko B, Thalman L, Ewert E, Delorme R, Hui S, Flett H, Lavoie N. An evidence based occupational therapy toolkit for assessment and treatment of the upper extremity post stroke 2015.
5. Damush TM, Plue L, Bakas T, Schmid A, Williams LS. Barriers and facilitators to exercise among stroke survivors. Rehabil Nurs. 2007;32(6):253–62.
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献