The Effects of Functional Electrical Stimulation on Balance of Stroke Patients in the Standing Posture

Kim, Mee-Young; Kim, Ju-Hyun; Lee, Jeong-Uk; Yoon, Na-Mi; Kim, Junghwan

doi:10.1589/jpts.24.77

Cited by 27 publications

(26 citation statements)

References 28 publications

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“…Stroke is a leading cause of neurological disability among adults and often leads to functional deficits in motor control4, 5, 11, 12 ) . Stroke involves muscle weakness, spasms, disturbed muscle timing, and a reduced ability to selectively activate muscles5, 6, 9 ) .…”

Section: Discussionmentioning

confidence: 99%

“…However, a recent study showed that stroke patients suffer from disproportionate muscle atrophy and other detrimental tissue composition changes on the paretic side2 ) . This is the reason that many stroke survivors move using abnormal movement patterns3,4,5,6 ) . Muscle weakness develops rapidly after stroke, adversely affecting motor performance, and contributing to reduced functional ability7 ) .…”

Section: Introductionmentioning

confidence: 99%

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Differences in Rheobase and Chronaxie between the Paretic and Non-Paretic Sides of Hemiplegic Stroke Patients: a Pilot Study

et al. 2013

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[Purpose] Rheobase and chronaxie are used to confirm muscle degeneration. For stroke patients, however, the uses of rheobase and chronaxie in determining paretic side muscle degeneration is not yet fully understood. Thus, in this study, we examined the electrical properties of the quadriceps muscles of stroke patients’ paretic side and compared them with their respective values on the non-paretic side. [Method] The subjects were six stroke patients (three females, three males). The pad of an electrical stimulator was applied to the vastus lateralis and vastus medialis regions to measure rheobase and chronaxie until the contractive muscle response to electrical stimulation became visible. [Result] Rheobase was significantly increased on the paretic side compared to that of the non-paretic side of hemiplegic stroke patients. Furthermore, chronaxie was significantly increased on the paretic side compared to the non-paretic side of hemiplegic stroke patients. [Conclusion] These results suggest that stroke affects the sensitivity of skeletal muscle contraction. Therefore, this data may contribute to our understanding of the muscle status of stroke patients.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Differences in Rheobase and Chronaxie between the Paretic and Non-Paretic Sides of Hemiplegic Stroke Patients: a Pilot Study

et al. 2013

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“…Stroke patients will have resulting motor deficits, including decreases in muscle activity and changes in motion patterns1, 3, 4, 7 ) . In the present study, we partially found in plethysmographic analysis that BaPWV is upregulated in stroke patients compared with normal subjects.…”

Section: Discussionmentioning

confidence: 99%

Waveform Analysis of the Brachial-ankle Pulse Wave Velocity in Hemiplegic Stroke Patients and Healthy Volunteers: A Pilot Study

Kim

Lee

et al. 2014

J Phys Ther Sci

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[Purpose] Brachial-ankle pulse wave velocity (BaPWV), which has been reported as an index of arterial stiffness, is very closely related to cardiovascular risk factors. A high BaPWV indicates high cardiovascular risk. However, BaPWV and pressure waveforms after stroke are not fully understood. [Methods] BaPWV was measured in thirty-two subjects (twenty-two healthy volunteers and ten stroke patients) while they were in the supine position. It was measured in their bilateral upper and lower extremities. [Results] BaPWV was significantly increased in the stroke group compared with the healthy volunteers. It was also significantly increased on both the affected and non-affected sides of stroke patients in the stroke group. Furthermore, analysis of the pressure waveforms showed that the peak pressure was significantly increased in the stroke group compared with the control group. The peak pressure on both the affected and non-affected sides was also significantly greater than in the control group. However, the rise and decay times were significantly decreased in the stroke group compared with the control group. The rise and decay time on both the affected and non-affected sides were also significantly more decreased than in the control group. [Conclusion] The results demonstrated that increased BaPWV and changed pulse waves are closely associated with the pathologic states of hemiplegic stroke patients.

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“…FES can enhance the effect of rehabilitation and activate patients' muscle system, also effectively improve their conditions. Many studies have proved that electrical stimulation treatment is beneficial for stroke and hemiparetic patients [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Hardware System for Real-Time EMG Signal Acquisition and Separation Processing during Electrical Stimulation

Hsueh¹,

Yin²,

Chen³

2015

J Med Syst

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The study aimed to develop a real-time electromyography (EMG) signal acquiring and processing device that can acquire signal during electrical stimulation. Since electrical stimulation output can affect EMG signal acquisition, to integrate the two elements into one system, EMG signal transmitting and processing method has to be modified. The whole system was designed in a user-friendly and flexible manner. For EMG signal processing, the system applied Altera Field Programmable Gate Array (FPGA) as the core to instantly process real-time hybrid EMG signal and output the isolated signal in a highly efficient way. The system used the power spectral density to evaluate the accuracy of signal processing, and the cross correlation showed that the delay of real-time processing was only 250 μs.

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The Effects of Functional Electrical Stimulation on Balance of Stroke Patients in the Standing Posture

Cited by 27 publications

References 28 publications

Differences in Rheobase and Chronaxie between the Paretic and Non-Paretic Sides of Hemiplegic Stroke Patients: a Pilot Study

Differences in Rheobase and Chronaxie between the Paretic and Non-Paretic Sides of Hemiplegic Stroke Patients: a Pilot Study

Waveform Analysis of the Brachial-ankle Pulse Wave Velocity in Hemiplegic Stroke Patients and Healthy Volunteers: A Pilot Study

Hardware System for Real-Time EMG Signal Acquisition and Separation Processing during Electrical Stimulation

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