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KMID : 0608320190260040042
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Physical Therapy Korea
2019 Volume.26 No. 4 p.42 ~ p.52
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Effects of Whole Body Electromyostimulation on Muscle Activity and Muscle Thickness of Rectus Femoris, and Muscle Thickness of Abdominis Muscle in Healthy Adults
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Lee Keun-Hyo
Park Se-Jin
Chon Seung-Chul
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Abstract
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Background: Whole body-electromyostimulation (WB-EMS) is widely used for the rehabilitation and recovery of patients with various neuromusculoskeletal disorders.
Objects: To objectively measure changes in lower extremity and abdominal muscles after sit-to-stand dynamic movement training using WB-EMS.
Methods: A total of 46 healthy adults (23 experimental and 23 control subjects) performed sit-to-stand exercise; the experimental group with WB-EMS, and the control group without WB-EMS. The muscle activity of the lower extremity, and the muscle thickness of the lower extremity and abdominal muscles were measured before and after the intervention.
Results: In terms of electromyographic activity, there was a significant interaction effect for the rectus femoris (RF) muscle (F=30.212, p=.000). With regards to ultrasonographic imaging, the muscle thickness of the RF muscle had a significant interaction effect at the muscle contraction ratio (F=8.071, p=.007). The deep abdominal muscles, such as the transverse abdominal (TrA) and internal oblique (IO) muscles, also showed significant interaction effects at the muscle contraction ratio (F=5.474, p=.024, F=24.151, p=.000, respectively).
Conclusion: These findings suggest that WB-EMS may help to improve the muscular activity of the RF muscle, and the muscle thickness of the RF muscle and deep muscles such as the TrA and IO muscles.
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KEYWORD
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Abdominal muscle, Muscular activity, Rectus femoris muscle, Whole body electromyostimulation
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