Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Muscle Coactivation Analysis during Upper-Limb Rehabilitation using Haptic Robotics in Stroke Survivors

뇌졸중 환자의 햅틱 로봇 기반 상지 재활 시 근육 동시활성도 분석

  • Keonyoung Oh (School of Mechanical Engineering, Kyungpook National University)
  • 오건영 (경북대학교 기계공학부)
  • Received : 2024.03.18
  • Accepted : 2024.04.02
  • Published : 2024.04.30
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Abstract

This study analyzed the occurrence of abnormal muscle coactivations based on the assistance of upper limb weight during reaching task in stroke patients. Nine chronic stroke survivors with hemiplegia performed reaching tasks using a programmable haptic robot. Electromyography (EMG) coactivation levels in the upper limb muscles were analyzed using a linear model describing the activation levels of two muscles when the patient's upper limb weight was assisted at 0%, 25%, and 50%. As the upper limb weight assistance of the haptic robot decreased, the magnitude of the EMG signal in both the deltoid and biceps muscles increased simultaneously on both the paretic and non-paretic sides. However, no difference was found between the paretic and non-paretic sides when comparing the slope of the linear model describing the activation relationship between the deltoid and biceps. The aforementioned results suggest that in some stroke survivors, the deltoids, triceps, and biceps on the paretic side may not be abnormally coupled when supporting the upper limbs against gravity. Furthermore, these results suggest that the combination of haptic robots and EMG analysis might be utilized for evaluating abnormal coactivations in stroke patients.

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Acknowledgement

이 논문은 2024년도 한국연구재단 기초연구사업의 지원을 받아 수행된 연구임(RS-2023-00252471).

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