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KMID : 1142420220200020179
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PNF and Movement
2022 Volume.20 No. 2 p.179 ~ p.187
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Comparison of Muscle Activity of Both Lower Extremities When a Lower Extremity Cycle Ergometer is Applied During Initial Rehabilitation After Unilateral Total Knee Arthroplasty
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Choi Eun-Ji
Lee Sang-Yeol
Seok Him
Yoon Sung-Young
Heo Jae-Seok
Lee Seung-Hoon
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Abstract
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Purpose: The purpose of this study was to determine the asymmetrical difference between the use of leg muscles on the surgical and non-surgical sides during initial lower extremity ergometer exercise after unilateral knee arthroplasty.
Methods: Twelve elderly patients diagnosed with degenerative arthritis of the knee and who underwent unilateral arthroplasty were included in this study. The leg length of each subject was taken into account when setting the application distance of the lower extremity ergometer. The same pedal resistance, strength, and speed were used for all the subjects. The total angle of use of the ergometer (360°) was analyzed by dividing it into an extension section and a flexion section. Using a surface electromyography system, the activities of the muscles of the surgical and non-surgical sides were converted into maximal voluntary isometric contraction (MVIC) and analyzed using the paired t-test.
Results: When the activities of the muscles on the surgical and non-surgical sides were compared, it was found that the rectus femoris and biceps femoris had significant differences in the flexion and extension sections (p < .05), and that the tibialis anterior significantly differed in the flexion section (p < .05). There was no significant difference in the extension section of the tibialis anterior muscle, or in the flexion and extension sections of the gastrocnemius (p >.05).
Conclusion: The results of this study confirm that the rectus femoris, tibialis anterior, biceps femoris, and gastrocnemius on the surgical side act in an opposite manner to those on the non-surgical side during pedaling in the same section.
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KEYWORD
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Total Knee Arthroplasty, Cycle ergometer, Muscle Activity
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