Characteristics of Initiation and Termination of Tibialis Anterior Contraction in Adults With Hemiplegia: A Preliminary Study
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The purpose of this study was to investigate the relationship between delays in initiation and terminationof tibialis anterior contraction through surface electromyographic (sEMG) analysis in adults withhemiplegia and healthy subjects and clinical assessment of lower-limb mobility. EMG activity of 6long-term survivors of stroke and 5 healthy subjects was recorded during maximal isometric ankle dorsiflexionin 3 seconds beeper signals. It must be done as fast and forcefully as possible. Lower limb mobilitywas assessed with Modified Emory Functional Ambulation Profile (mEFAP). Delay in initiation andtermination of muscle contraction was significantly prolonged in the affected lower limb relative to theunaffected limb. Termination of muscle contraction in the hemiplegic lower limb was significantly delayedthan the initiation on the affected sides. Delay in initiation and termination of muscle contraction correlatedsignificantly with a few range of mEFAP. Abnormally delayed initiation and termination of musclecontraction may contribute to hemiparetic lower limb mobility in hemiparetic patients. Consequently, thisstudy showed that abnormal delay of initiation and termination of muscle contraction may contribute tohemiparetic lower limb mobility in adults with hemiplegia. Further studies are needed to demonstrate atreatment effect.
Abstract
The purpose of this study was to investigate the relationship between delays in initiation and terminationof tibialis anterior contraction through surface electromyographic (sEMG) analysis in adults withhemiplegia and healthy subjects and clinical assessment of lower-limb mobility. EMG activity of 6long-term survivors of stroke and 5 healthy subjects was recorded during maximal isometric ankle dorsiflexionin 3 seconds beeper signals. It must be done as fast and forcefully as possible. Lower limb mobilitywas assessed with Modified Emory Functional Ambulation Profile (mEFAP). Delay in initiation andtermination of muscle contraction was significantly prolonged in the affected lower limb relative to theunaffected limb. Termination of muscle contraction in the hemiplegic lower limb was significantly delayedthan the initiation on the affected sides. Delay in initiation and termination of muscle contraction correlatedsignificantly with a few range of mEFAP. Abnormally delayed initiation and termination of musclecontraction may contribute to hemiparetic lower limb mobility in hemiparetic patients. Consequently, thisstudy showed that abnormal delay of initiation and termination of muscle contraction may contribute tohemiparetic lower limb mobility in adults with hemiplegia. Further studies are needed to demonstrate atreatment effect.
참고문헌 (34)
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