Evaluation of TENS Based Biofeedback and Warning for Improvement of Seated Balance on a Trunk Rehabilitation Robot

Eizad, Amre; Lee, Hosu; Lee, Junyeong; Yoon, Jungwon

doi:10.1109/lra.2022.3191269

Cited by 4 publications

(3 citation statements)

References 36 publications

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“…In addition, the COP and angle of seat data are related to balance performance. The Mean Velocity Displacement (MVD) (1) and Planar Deviation (PD) (2) of COP movements, and the RMS (Root Mean Square) of M and A directed trunk accelerations are all commonly used parameters for evaluating postural stability, and their higher values mean higher levels of postural instability [10,11]. Linear accelerations of the lower thorax to check participants' activity, measured by the IMU with respect to the earth frame of reference, were acquired using the MyoMotion software (MR 3.16, Noraxon, USA).…”

Section: Machine Learning Modelsmentioning

confidence: 99%

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A Machine Learning-Based Initial Difficulty Level Adjustment Method for Balance Exercise on a Trunk Rehabilitation Robot

Lee

Choi

Eizad

et al. 2023

IEEE Trans. Neural Syst. Rehabil. Eng.

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Trunk rehabilitation exercises such as those for remediating core stability can help improve the seated balance of patients with weakness or loss of proprioception caused by diseases such as stroke, and aid the recovery of other functions such as gait. However, there has not yet been any reported method for automatically determining the parameters that define exercise difficulty on a trunk rehabilitation robot (TRR) based on data such as the patient's demographic information, balancing ability, and training sequence, etc. We have proposed a machine learning (ML)-based difficulty adjustment method to determine an appropriate virtual damping gain (Dvirtual) of the controller for the TRR's unstable training mode. Training data for the proposed system is obtained from 37 healthy young adults, and the trained ML model thus obtained is tested through experiments with a separate population of 25 healthy young adults. The leave-one-out cross validation results (37 subjects) from the training group for validation of the designed ML model showed 80.90% average accuracy (R2 score) for using the given information to predict the desired difficulty levels, which are represented by the level of balance performance quantified as Mean Velocity Displacement (MVD) of the center of pressure. Statistical analysis (Repeated measures analysis of variance) of subject performance also showed that ground truth difficulty levels from the training data and predicted difficulty levels did not differ significantly under any of the three exercise modes used in this study (Hard, Medium, and Easy), and the standard deviations were reduced by 16.39, 41.39, and 25.68%, respectively. Moreover, the Planar Deviation (PD) of the center of pressure, which was not the target parameter here, also showed results similar to the MVD, which indicates that the predicted Dvirtual affected the difficulty level of balance performance. Therefore, the proposed ML model-based difficulty adjustment method has potential for use with people who have varied balancing abilities.

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Section: Machine Learning Modelsmentioning

confidence: 99%

“…In previous TRR studies with healthy young people, its unstable seat mode was used with the fixed control parameter under various biofeedback conditions (virtual damping gain) [10,11]. The results of these studies showed large standard deviations (SD) of the balance outcomes.…”

Section: Introductionmentioning

confidence: 99%

A Machine Learning-Based Initial Difficulty Level Adjustment Method for Balance Exercise on a Trunk Rehabilitation Robot

Lee

Choi

Eizad

et al. 2023

IEEE Trans. Neural Syst. Rehabil. Eng.

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show abstract

“…In the above article [1], we missed to cite five references [2], [3], [4], [5], [6]. In addition, some references were cited incorrectly in some places.…”

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confidence: 99%

Correction to “A TENS Based System for 2-Dimensional Balance Biofeedback Under Muscle Fatigue Condition”

Lee

Eizad

et al. 2023

IEEE Access

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Preliminary Study of Portable Vibrotactile and Electrical Stimulation System for Knee Proprioception Enhancement

Park,

Min,

Choi

et al. 2023

2023 20th International Conference on Ubiquitous Robots (UR)

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Evaluation of TENS Based Biofeedback and Warning for Improvement of Seated Balance on a Trunk Rehabilitation Robot

Cited by 4 publications

References 36 publications

A Machine Learning-Based Initial Difficulty Level Adjustment Method for Balance Exercise on a Trunk Rehabilitation Robot

A Machine Learning-Based Initial Difficulty Level Adjustment Method for Balance Exercise on a Trunk Rehabilitation Robot

Correction to “A TENS Based System for 2-Dimensional Balance Biofeedback Under Muscle Fatigue Condition”

Preliminary Study of Portable Vibrotactile and Electrical Stimulation System for Knee Proprioception Enhancement

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