The effect of the trunk and gluteus maximus muscle activities according to support surface and hip joint rotation during bridge exercise

Abstract

[Purpose] The purposes of this study were to strengthen gluteus maximus and trunk muscles depending upon the hip joint direction by bridging exercise on an unstable and stable surface, and to suggest an intervention method for efficient and selective exercise. [Participants and Methods] The test measured the muscle activities with the external rotation and internal rotation of 25 degrees and hip joint neutral position of 0 degree on a stable and unstable surface each exercise 3 times for 9 seconds. [Results] External oblique abdominis showed a higher muscle activity on the unstable surface and internal rotation. Erector spinae showed no significant difference on the surfaces and demonstrated the highest muscle activity at the internal rotation. Gluteus maximus showed a higher muscle activity on the stable surface and external rotation and the interaction effect between the surface and the angle indicated a statistical significance as well. [Conclusion] Muscle activities appear different depending upon the change of surface and joint angle, and it can be said that the correct mobilization of muscle fiber relying on the muscle arrangement direction and muscle contraction direction is the most important factor for gluteus maximus.

Muscle Strength, Lumbar Curve, Fear of Movement and Functional Disability among Patients with Lumbar Disc Herniation: A Review

“…The development or exacerbation of low back pain (LBP) may be attributed to heightened lateral trunk flexion and consequent compression of intervertebral discs, alongside altered movement patterns. This phenomenon has been identified by [25]. It is plausible that insufficient strength in the gluteus medius muscle could be a contributing factor to this occurrence.…”

Effects Of Kinetic Changes On Neuromuscular Activity Of Adductor Magnus During Bridging Exercises

“…EMG data of AM were collected from the dominant kicking leg (UBE) and bilateral thigh (BBE) respectively. We performed the motion of each position for 9 seconds and analyzed the muscle activities through measured values for 3 seconds excluding the rst 3 seconds and the last 3 seconds to diminish error at the beginning and in the nal parts [22]. The raw EMG signals were normalized by MVIC to permit meaningful comparisons among subjects and therefore expressed as a percentage of the MVIC (% MVIC).…”

“…The provided sample size was 16. Therefore, we recruited 20 healthy volunteers (7 males and 13 females, aged [20][21][22][23][24][25][26][27][28][29][30] to participate in the study. All subjects were fully informed of the procedures and purposes of this study and provided written informed consent.…”