脳卒中患者の歩幅回復を助けるロボット股関節外骨格が有望視される(Robotic Hip Exoskeleton Shows Promise for Helping Stroke Patients Regain Their Stride)

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2024-03-04 マサチューセッツ大学アマースト校

脳卒中の生存者の80%以上が歩行困難を経験し、これは彼らの日常生活、独立性、総合的な生活の質に大きな影響を与えます。しかし、マサチューセッツ大学アムハースト校の新しい研究では、独自のロボット式ヒップ外骨格が歩行機能を向上させるトレーニングツールとして開発され、脳卒中のリハビリテーションに新たな可能性をもたらすことが示されました。このアプローチは、現在のリハビリテーション方法よりもアクセスしやすく、日常生活に移しやすい新しい治療法を可能にします。

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ロボット外骨格による非対称な股関節の硬さに対する歩行の適応 Gait Adaptation to Asymmetric Hip Stiffness Applied by a Robotic Exoskeleton

Banu Abdikadirova; Mark Price; Jonaz Moreno Jaram …
IEEE Transactions on Neural Systems and Rehabilitation Engineering  Published:15 January 2024
DOI:https://doi.org/10.1109/TNSRE.2024.3354517

Fig. 1. - A Participants walked on an instrumented treadmill wearing a bilateral hip exoskeleton and reflective markers for motion capture. B The exoskeleton exerted attractive and repulsive torques expressed as positive and negative stiffness on the right and left sides, respectively. C Experimental protocol consisted of 5 minutes of baseline walking (stiffness controller OFF), 10 minutes of walking with stiffness ON, and 5 minutes of walking with stiffness OFF.

Abstract

Wearable exoskeletons show significant potential for improving gait impairments, such as interlimb asymmetry. However, a more profound understanding of whether exoskeletons are capable of eliciting neural adaptation is needed. This study aimed to characterize how individuals adapt to bilateral asymmetric joint stiffness applied by a hip exoskeleton, similar to split-belt treadmill training. Thirteen unimpaired individuals performed a walking trial on the treadmill while wearing the exoskeleton. The right side of the exoskeleton acted as a positive stiffness torsional spring, pulling the thigh towards the neutral standing position, while the left acted as a negative stiffness spring pulling the thigh away from the neutral standing position. The results showed that this intervention applied by a hip exoskeleton elicited adaptation in spatiotemporal and kinetic gait measures similar to split-belt treadmill training. These results demonstrate the potential of the proposed intervention for retraining symmetric gait.

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