KMID : 1195020230190020081
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Archives of Orthopedic and Sports Physical Therapy 2023 Volume.19 No. 2 p.81 ~ p.90
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Effects of Abdominal Drawing-In Technique and Hip Joint Adduction on Abdominal Muscle Thickness during Bridge Exercise according to Knee Angle
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Jeong Hyun-Min
Kim Se-You Bae Ju-Eun Lee Ga-Eun Suh Ju-Hee Ji Cho-Hun Jun Hyun-Ju
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Abstract
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Purpose: This study was conducted to determine whether there are changes in the muscle thickness of theTransversus abdominis, Internal oblique, and External oblique muscles by applying the abdominal drawing-inwhile maintaining hip joint adduction using ultrasound.
Methods: Thirty healthy adult men and women in their 20s located in J City were selected for the study. Theparticipants performed the bridge posture while maintaining hip joint adduction, with the knee joint bendingangle was set to 90¡Æ and 120¡Æ, and the abdominal drawing-in applied. The exercises were performed threetimes a week for a total of four weeks, and after applying exercise, the thickness of the Transversus abdominis,Internal oblique, and External oblique muscles were measured using ultrasound. After applying the exercise,the paired t-test was used to compare the effects of individual exercise training, and the independent t-testwas used to compare the differences of each group.
Results: The significance level was set at ¥á<0.05. As a result of the study, the muscle thickness of the Internaloblique significantly increased during the 90¢ª flexion of the knee joint (p>.05). Internal and External obliquemuscle thickness significantly increased during the 120¢ª flexion of the knee joint (p>.05).
Conclusion: When the knee joint angle is 90¡Æ and 120¡Æ, with the bridge exercise in place, and the abdominal drawing-inapplied, back pain can be prevented by selectively activating the Internal oblique External oblique muscles.
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KEYWORD
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Abdominal Drawing-In, Abdominal Muscle Thickness, Bridge Exercise, Ultra Sound, Hip Joint Adduction
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