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KMID : 1211620200150020049
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Journal of the Korean Society of Physical Medicine
2020 Volume.15 No. 2 p.49 ~ p.56
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Effects of Abdominal Drawing-in Maneuver on Muscle Activity of the Trunk and Legs during Flat Walking
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Ahn Su-Hong
Lee Su-Kyoung
Jo Hyun-Dai
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Abstract
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Purpose: This study examined the difference in muscle activity of the trunk and legs during flat walking with or without an abdominal drawing-in maneuver.
Methods: This study was conducted on 15 healthy males and eight females who were attending D University in Busan. This experiment was conducted after 15 minutes of abdominal drawing-in training using a pressure biofeedback unit before the experiment, and the difference in the muscle activity of the trunk and legs during flat walking with or without an abdominal drawing-in technique was investigated. Surface electromyography was used, and the electrode attachment site was the right sternocleidomastoid muscle, splenius capitis muscle, rectus abdominis muscle, external abdominal oblique muscle, transverse abdominis muscle, erector spinae muscle, vastus medialis muscle, and vastus lateralis muscle (TM DTS, Noraxon, USA). The data were analyzed statistically using a paired t-test on SPSS version 18.0 (IBM).
Results: The muscle activity of the rectus abdominis muscle, external abdominal oblique muscle, transverse abdominis muscle, vastus medialis muscle were increased significantly and maintained more than walking without maintaining an abdominal drawing-in maneuver (p < .05). Moreover, muscle activity of the erector spinae muscle was decreased significantly and maintained more than walking without maintaining an abdominal drawing-in maneuver (p < .05).
Conclusion: Maintaining an abdominal drawing-in maneuver during flat walking is more effective during walking training.
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KEYWORD
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Abdominal drawing-in maneuver, Biofeedback unit, Flat walking, Muscle activity
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