title: Effects of integrating hip movements into bridge exercises on electromyographic activities of selected trunk muscles in healthy individuals.
abstract: This study aimed to identify the electromyographic (EMG) effects in selected trunk muscles after incorporating hip movement into bridging exercise. Twenty-six healthy adults (13 men and 13 women) volunteered for this experiment. EMG data (% maximum voluntary isometric contraction) were recorded from the rectus abdominis (RA), obliquus internus (OI), erector spinae (ES), and multifidus (MF) muscles of the dominant side while the subjects performed 3 types of bridging exercise, including bridging alone (Bridging 1), bridging with unilateral hip movements (Bridging 2), and bridging with bilateral hip movements (Bridging 3) in a sling suspension system. The RA and OI showed greater EMG activity during Bridging 2 and 3 compared to Bridging 1, with the greatest OI activity during Bridging 3 (p < 0.05), and the activity of the MF appeared to be greater during Bridging 3 than during Bridging 1 and 2 (p < 0.05). Furthermore, the OI/RA and MF/ES ratios were significantly higher for Bridging 2 (OI/RA = 1.89 ± 1.41; MF/ES = 1.03 ± 0.19) and Bridging 3 (OI/RA = 2.34 ± 1.86; MF/ES = 1.03 ± 0.15) than Bridging 1 (IO/RA = 1.35 ± 0.92; MF/ES = 0.98 ± 0.16). The OI/RA ratio was significantly higher for Bridging 3 than for Bridging 2. Based on these results, adding hip abduction and adduction, particularly bilateral movements, could be a useful method to enhance OI and MF EMG activity and their activities relative to global muscles during bridging exercise.
authors.affiliation: Department of Physical Therapy, The Graduate School, Daejeon University, 96-3, Yongun-dong, Dong-gu, Daejeon, 300-716, Republic of Korea.
authors.forename: Hyun-ju
authors.initials: HJ
authors.lastname: Park
authors.affiliation: Department of Physical Therapy, College of Health Science, Cheongju University, 298 Daeseongro, Sangdang-gu, Cheongju, Chungbuk, 360-764, Republic of Korea. Electronic address: odduck@cju.ac.kr.
authors.forename: Duck-won
authors.initials: DW
authors.lastname: Oh
authors.affiliation: Department of Physical Therapy, College of Natural Science, Daejeon University, 96-3, Yongun-dong, Dong-gu, Daejeon, 300-716, Republic of Korea.
authors.forename: Suhn-yeop
authors.initials: SY
authors.lastname: Kim
mesh_terms: D000328:Adult; D064131:Back Muscles / Q000502:physiology*; D004576:Electromyography; D015444:Exercise / Q000502:physiology*; D005081:Exercise Therapy / Q000379:methods; D005260:Female; D064368:Healthy Volunteers; D006621:Hip Joint; D006801:Humans; D008297:Male; D009119:Muscle Contraction / Q000502:physiology; D018763:Muscle Fatigue / Q000502:physiology; D053580:Muscle Strength / Q000502:physiology; D016059:Range of Motion, Articular / Q000502:physiology*; D012016:Reference Values; D012680:Sensitivity and Specificity; D016683:Supine Position; D055815:Young Adult
keywords: Bridging exercise; Electromyography; Hip movement; Trunk muscles