Abstract. [Purpose] This study compared the activities of the abdominal and hip extensor muscles between the
bridging exercise (BE) and bridging exercise with hip adduction (BEHA) positions in women using electromyography
(EMG). [Subjects] We recruited 14 healthy adult females with no history of low back pain. [Methods] The
subjects performed bridging exercises with and without hip adduction. The EMG activities of the rectus abdominis
(RA), external oblique (EO), internal oblique (IO), and gluteus maximus (GM) muscles were recorded. [Result] The
EMG activities of all muscles were significantly increased during the BEHA compared to the BE. [Conclusion] The
bridging exercise with hip adduction produced greater activation of the abdominal and hip extensor muscles.
Key words: Bridging exercise, EMG, Hip adduction