Details
| Original language | English |
|---|---|
| Pages (from-to) | 431-434 |
| Number of pages | 4 |
| Journal | Current Directions in Biomedical Engineering |
| Volume | 8 |
| Issue number | 2 |
| Publication status | Published - 1 Aug 2022 |
| Externally published | Yes |
Abstract
Introduction: Children with cerebral palsy (CCP) benefit from intensive arm training. Exergames that can be played at home offer the possibility to increase the frequency of therapy but require reliable and accurate real-time motion tracking via easy-to-use sensors in unsupervised settings and magnetically disturbed environments. Method: We propose an inertial-sensor-based method with a single sensor on the wrist for real-time tracking of the inclination of the forearm. The control parameter of the game was validated with an optical marker-based ground truth system. Results: First experiments with a therapist performing training movements in a healthy and simulated spastic manner show that the forearm inclination well captures the motion dynamics. The accuracy of the inertial-sensor-based measurement is validated with respect to the reference system in three healthy subjects. Orientation offsets between the inertial sensor and the forearm marker set in the range of 2° 6° and dynamic measurement errors about 3.1° were obtained. Conclusion: This work demonstrates that the proposed method is suitable for real-time control of exergames of CCP. The validation with an optical reference system showed that the forearm inclination can be used as for feedback and therapeutic progress monitoring.
Keywords
- Cerebral palsy, Exergame, Forearm inclination, Inertial sensor, Motion capture validation, Rehabilitation
ASJC Scopus subject areas
- Engineering(all)
- Biomedical Engineering
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In: Current Directions in Biomedical Engineering, Vol. 8, No. 2, 01.08.2022, p. 431-434.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Using a single inertial sensor to control exergames for children with cerebral palsy
AU - Mittag, Christina
AU - Waldheim, Vivian
AU - Krause, Axel
AU - Seel, Thomas
PY - 2022/8/1
Y1 - 2022/8/1
N2 - Introduction: Children with cerebral palsy (CCP) benefit from intensive arm training. Exergames that can be played at home offer the possibility to increase the frequency of therapy but require reliable and accurate real-time motion tracking via easy-to-use sensors in unsupervised settings and magnetically disturbed environments. Method: We propose an inertial-sensor-based method with a single sensor on the wrist for real-time tracking of the inclination of the forearm. The control parameter of the game was validated with an optical marker-based ground truth system. Results: First experiments with a therapist performing training movements in a healthy and simulated spastic manner show that the forearm inclination well captures the motion dynamics. The accuracy of the inertial-sensor-based measurement is validated with respect to the reference system in three healthy subjects. Orientation offsets between the inertial sensor and the forearm marker set in the range of 2° 6° and dynamic measurement errors about 3.1° were obtained. Conclusion: This work demonstrates that the proposed method is suitable for real-time control of exergames of CCP. The validation with an optical reference system showed that the forearm inclination can be used as for feedback and therapeutic progress monitoring.
AB - Introduction: Children with cerebral palsy (CCP) benefit from intensive arm training. Exergames that can be played at home offer the possibility to increase the frequency of therapy but require reliable and accurate real-time motion tracking via easy-to-use sensors in unsupervised settings and magnetically disturbed environments. Method: We propose an inertial-sensor-based method with a single sensor on the wrist for real-time tracking of the inclination of the forearm. The control parameter of the game was validated with an optical marker-based ground truth system. Results: First experiments with a therapist performing training movements in a healthy and simulated spastic manner show that the forearm inclination well captures the motion dynamics. The accuracy of the inertial-sensor-based measurement is validated with respect to the reference system in three healthy subjects. Orientation offsets between the inertial sensor and the forearm marker set in the range of 2° 6° and dynamic measurement errors about 3.1° were obtained. Conclusion: This work demonstrates that the proposed method is suitable for real-time control of exergames of CCP. The validation with an optical reference system showed that the forearm inclination can be used as for feedback and therapeutic progress monitoring.
KW - Cerebral palsy
KW - Exergame
KW - Forearm inclination
KW - Inertial sensor
KW - Motion capture validation
KW - Rehabilitation
UR - http://www.scopus.com/inward/record.url?scp=85137888441&partnerID=8YFLogxK
U2 - 10.1515/cdbme-2022-1110
DO - 10.1515/cdbme-2022-1110
M3 - Article
AN - SCOPUS:85137888441
VL - 8
SP - 431
EP - 434
JO - Current Directions in Biomedical Engineering
JF - Current Directions in Biomedical Engineering
IS - 2
ER -