Differences in Rheobase and Chronaxie between the Paretic and Non-Paretic
Sides of Hemiplegic Stroke Patients: a Pilot Study |
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| Authors: | Won-Deok Lee Ju-Hyun Kim Jeong-Uk Lee Mee-Young Kim Lim-Kyu Lee Seung-Min Yang Hye-Joo Jeon Tae-Hyun Lee Junghwan Kim |
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| Affiliation: | 1) Laboratory of Health Science and Nanophysiotherapy, Department of Physical Therapy, Graduate School, Yongin University;2) Department of Combative Martial Arts Training, College of Martial Arts, Yongin University;3) Department of Physical Therapy, College of Public Health and Welfare, Yongin University |
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| Abstract: | [Purpose] Rheobase and chronaxie are used to confirm muscle degeneration. For strokepatients, however, the uses of rheobase and chronaxie in determining paretic side muscledegeneration is not yet fully understood. Thus, in this study, we examined the electricalproperties of the quadriceps muscles of stroke patients’ paretic side and compared themwith their respective values on the non-paretic side. [Method] The subjects were sixstroke patients (three females, three males). The pad of an electrical stimulator wasapplied to the vastus lateralis and vastus medialis regions to measure rheobase andchronaxie until the contractive muscle response to electrical stimulation became visible.[Result] Rheobase was significantly increased on the paretic side compared to that of thenon-paretic side of hemiplegic stroke patients. Furthermore, chronaxie was significantlyincreased on the paretic side compared to the non-paretic side of hemiplegic strokepatients. [Conclusion] These results suggest that stroke affects the sensitivity ofskeletal muscle contraction. Therefore, this data may contribute to our understanding ofthe muscle status of stroke patients.Key words: Rheobase, Chronaxie, Hemiplegic stroke patients |
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