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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| Institution: | 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 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.Key words: Rheobase, Chronaxie, Hemiplegic stroke patients |
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