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Published on: March 21, 2013
Cardiopulmonary performance testing using a robotics-assisted tilt table: feasibility assessment in able-bodied
J Saengsuwan1, M Laubacher2, T Nef3
1Institute for Rehabilitation and Performance Technology, Division of Mechanical Engineering, Department of Engineering and Information Technology, Bern University of Applied Sciences, Burgdorf, Switzerland ARTORG Center for Biomedical Engineering Research, Gerontechnology and Rehabilitation Research Group, Bern University, Bern, Switzerland Department of Physical Medicine and Rehabilitation, Faculty of Medicine, Khon Kaen University, Thailand.
Robotics-assisted tilt tables are feasible for peak cardiopulmonary performance testing in able-bodied individuals, demonstrating technical viability and significant physiological responses. Further research in neurological patients is recommended.
Area of Science:
- Rehabilitation Medicine
- Exercise Physiology
- Biomedical Engineering
Background:
- Robotics-assisted tilt table technology facilitates early rehabilitation for neurological patients.
- This technology offers cyclical stepping and physiological leg loading.
- Its utility for peak cardiopulmonary performance testing requires evaluation.
Purpose of the Study:
- To assess the feasibility of using a robotics-assisted tilt table for peak cardiopulmonary performance testing.
- To evaluate technical implementation and physiological responsiveness in able-bodied subjects.
Main Methods:
- A robotics-assisted tilt table was enhanced with force sensors and a work rate algorithm.
- A custom visual feedback system guided subjects' work rate.
- Incremental exercise tests were conducted to assess cardiopulmonary responses.
Main Results:
- 11 able-bodied subjects (9 male, 2 female) participated.
- Peak oxygen uptake (O2peak) averaged 32.4 mL/min/kg (81.1% of predicted).
- Peak heart rate (HRpeak) reached 177.5 bpm, with high exertion and leg fatigue reported.
Conclusions:
- The robotics-assisted tilt table is technically feasible for peak cardiopulmonary testing.
- Substantial cardiopulmonary responses were observed in able-bodied subjects.
- Further investigation in neurologically impaired populations is warranted.
