Wang, Hanjie; Guimaraes, Diana; Nef, Tobias; Hunt, Kenneth James (2024). Self-paced heart rate control during treadmill exercise for persons with gait impairment: a case study Frontiers in Control Engineering, 5, pp. 1-12. Frontiers Research Foundation 10.3389/fcteg.2024.1343851
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Introduction: A self-paced (SP) heart rate (HR) control system proposed in a previous study was found to be feasible for healthy participants. The aims of this work were to investigate whether the SP HR control system is feasible to achieve accurate HR control in a participant with gait impairments, and to assess its interaction with an existing motor-driven body weight support (BWS) system. Methods: One participant with cerebral palsy was recruited in this case study. Three preliminary tests were completed to determine the appropriate mean value and amplitude of the target heart rate curve, and to identify a customised heart rate response model. Two series of formal self-paced heart rate control tests were then conducted to investigate the influence of different heart rate compensators and the presence of the BWS system. Results: The customised heart rate controller achieved improved accuracy in heart rate control and reduced oscillation in the treadmill target speed: the rootmean- square heart rate tracking error (RMSE) was 2.38 beats per minute (bpm) vs. 3.91 bpm (customised controller vs. nominal controller), and the average power of changes in the treadmill target speed was 0.4 × 10^−4 m2/s2 vs. 8.4 × 10^−4 m2/s2. The BWS system resulted in improved HR tracking accuracy: RMSE on heart rate tracking was 3.02 bpm vs. 3.50 bpm (with BWS vs. without BWS). The BWS system had no influence on the automatic position control accuracy: RMSE on distance tracking was 0.0159 m vs. 0.0164 m. Conclusion: After customising the heart rate compensator, the self-paced heart rate control system is feasible to achieve accurate heart rate control in an individual with gait impairments, and it can correctly interact with the BWS system.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
School of Engineering and Computer Science > Institute for Human Centered Engineering (HUCE) School of Engineering and Computer Science > Institute for Human Centered Engineering (HUCE) > Reha Lab School of Engineering and Computer Science |
Name: |
Wang, Hanjie 0000-0003-3505-3447; Guimaraes, Diana; Nef, Tobias and Hunt, Kenneth James 0000-0002-6521-9455 |
Subjects: |
T Technology > TA Engineering (General). Civil engineering (General) |
ISSN: |
2673-6268 |
Publisher: |
Frontiers Research Foundation |
Funders: |
[7] Swiss National Science Foundation |
Language: |
English |
Submitter: |
Kenneth James Hunt |
Date Deposited: |
07 Aug 2024 10:15 |
Last Modified: |
07 Aug 2024 10:15 |
Publisher DOI: |
10.3389/fcteg.2024.1343851 |
Related URLs: |
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Uncontrolled Keywords: |
Heart rate control Treadmill Real-time feedback Self-paced Gait impairment Heart Rate dynamics |
ARBOR DOI: |
10.24451/arbor.22065 |
URI: |
https://arbor.bfh.ch/id/eprint/22065 |
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