Modifying the hip abduction angle during bridging exercise can facilitate gluteus maximus activity

作者：Kang Sun Young; Choung Sung Dae; Jeon Hye Seon^*

来源：Manual Therapy, 2016, 22: 211-215.

DOI：10.1016/j.math.2015.12.010

• Bridging exercise
• Electromyography
• Gluteus maximus
• Hip abduction

Purpose: To investigate how the erector spinae (ES) and gluteus maximus (GM) muscle activity and the anterior pelvic tilt angle change with different hip abduction angles during a bridging exercise.
Methods: Twenty healthy participants (10 males and 10 females, aged 21.6 +/- 1.6) voluntarily participated in this study. Surface electromyography (EMG) signals were recorded from the ES and GM during bridging at three hip abduction angles: 0 degrees, 15 degrees, and 30 degrees. Simultaneously, the anterior pelvic tilt angle was measured using Image J software.
Results: The EMG amplitude of the GM muscle and the GM/ES EMG ratio were greatest at 30 degrees hip abduction, followed by 15 degrees and then 0 degrees hip abduction during the bridging exercise. In contrast, the ES EMG amplitude at 30 degrees hip abduction was significantly lesser than that at 0 degrees and 15 degrees abduction. Additionally, the anterior pelvic tilt angle was significantly lower at 30 degrees hip abduction than at 0 degrees or 15 degrees.
Conclusions: Bridging with 30 degrees hip abduction can be recommended as an effective method to selectively facilitate GM muscle activity, minimize compensatory ES muscle activity, and decrease the anterior pelvic tilt angle.

• 出版日期2016-4