Smartphones are omnipresent in society and offer convenient and suitable sensors for mobility monitoring applications. To enhance our understanding of human activity recognition (HAR) system performance for able-bodied and populations with gait deviations, this research evaluated a custom smartphone-based HAR classifier on fifteen able-bodied participants and fifteen participants who suffered a stroke. Participants performed a consecutive series of mobility tasks and daily living activities while wearing a BlackBerry Z10 smartphone on their waist to collect accelerometer and gyroscope data. Five features were derived from the sensor data and used to classify participant activities (decision tree). Sensitivity, specificity and F-scores were calculated to evaluate HAR classifier performance. The classifier performed well for both populations when differentiating mobile from immobile states (F-score ) 94 %). As activity recognition complexity increased, HAR system sensitivity and specificity decreased for the stroke population, particularly when using information derived from participant posture to make classification decisions. Human activity recognition using a smartphone based system can be accomplished for both able-bodied and stroke populations; however, an increase in activity classification complexity leads to a decrease in HAR performance with a stroke population. The study results can be used to guide smartphone HAR system development for populations with differing movement characteristics.
COBISS.SI-ID: 2131305
The aim of our project was to develop a telerehabilitation service which would help compensating the lack of rehabilitation teams on the primary level. We developed the telerehabilitation model, prepared the required infrastructure (web portal, web multimedia server, Skype teleconferencing system), prepared the content (movies for patients to watch at home), decided how the patients would access the content, and organised the videoconferences. The telerehabilitation solution was tested by five patients after trans-tibial amputation. Twenty-six movies were produced, classified and stored on the cloud server. The therapists prescribed 7 to 17 different exercise movies per patient; the patients watched the movies from 0 to 11 times. The occupational therapist and the physiotherapist held one videoconference per week with each patient (two to seven in total). Each patient experienced problems with the mobile internet connection at least once, but the problems were quickly resolved. The developed rehabilitation solution is appropriate and useful in clinical practice for patients staying at home after trans-tibial amputation.
COBISS.SI-ID: 2114409
Background: The aim of our project was to develop a telerehabilitation service which would help compensating the lack of rehabilitation teams on the primary level. We also wanted to test the suitability of the developed content and assess its feasibility for use it in clinical practice. We tested our own telerehabiltiation model based on movies for rehabilitation that patients can access via tablet PC and monitoring by professionals during videoconferences. Methods: We developed the telerehabilitation model, prepared the required infrastructure (web portal, web multimedia server, Skype teleconferencing system), prepared the content (movies for patients to watch at home), decided how the patients would access the content, and organised the videoconferences. The telerehabilitation solution was tested by five patients after trans-tibial amputation. Results: Twenty-six movies were produced, classified and stored on the cloud server. The therapists prescribed 7 to 17 different exercise movies per patient; the patients watched the movies from 0 to 11 times. The occupational therapist and the physiotherapist held one videoconference per week with each patient (two to seven in total). Each patient experienced problems with the mobile internet connection at least once, but the problems were quickly resolved. Conclusions: The developed rehabilitation solution is appropriate and useful in clinical practice for patients staying at home after trans-tibial amputation.
COBISS.SI-ID: 2024553