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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국전문물리치료학회 한국전문물리치료학회지 한국전문물리치료학회지 제20권 제4호
발행연도
2013.1
수록면
1 - 8 (8page)

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초록· 키워드

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This study analyzes how different knee flexion angles affect the abdominal and pelvic muscle activity during supine bridging. Twenty healthy subjects participated in the study. We used surface electromyography (EMG) to measure how three different knee flexion angles (100°, 70°, and 40°) affected the activity of the transverse abdominis/internal oblique (TrA/IO), external oblique (EO), biceps femoris (BF), rectus femoris (RF), and gluteus maximus (GM) muscles on the dominant side during supine bridging. The one-way repeated analysis of variance (ANOVA) was used to determine the statistical significance of TrA/IO, EO, BF, RF and GM muscle activity and the GM/BF activity ratio. For the TrA/IO, EO, BF, and GM muscles, supine bridging with different knee flexion angles resulted in significant differences in abdominal and pelvic muscle activity. For the TrA/IO muscles, the post-hoc test demonstrated that muscle activity significantly increased at 40° compared to 70°; however, there were no significant differences between 100° and 70° or 100° and 40°. For the EO muscle, the post-hoc test demonstrated that muscle activity significantly increased at 40° compared to 100° and 70°; no significant difference was observed between angles 100° and 70°. For the BF muscle, the post-hoc test demonstrated that muscle activity significantly increased according to the knee flexion angle (40°>70°>100°). For the GM muscle, the post-hoc test demonstrated that muscle activity significantly increased according to the knee flexion angle (100°>70°>40°). However, for the RF muscle, there was no significant difference. Additionally, the GM/BF activity ratio significantly increased according to the knee flexion angle (100°>70°>40°). From these results, we can conclude that bridging with a knee flexion of 100° can strengthen the GM muscle, whereas bridging with a knee flexion of 40° is recommended to strengthen the IO, EO, and BF muscles. We can also conclude that knee flexion angles should be modified during supine bridging to increase the muscle activity of different target muscles.

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