The mean ± SD activity of this muscle in the side-lying exercises was reported as 45.2 ± 16.2% ( 26).Ĭomputer simulations have been widely used to simulate the biomechanical behavior of the human musculoskeletal system due to its straight-forward implementations, ability to perform a parametric study, reducing the cost and problems of experiments, etc. Moreover, Bolgla and Uhl demonstrated that the activation of the GMd muscle in the side-lying position of the hip abduction exercise is about 44% MVIC ( 12). Hip abduction tests in the side-lying position have resulted in the GMd activity of 39% MVIC in average in another study ( 25). They also suggested that the use of the pelvic compression belt could enhance the activation level ( 22). have found that the maximum activation for the GMd muscle is less than 30% MVIC in the same position. They found that hip abduction exercise in side plank position requires the activation of 71% maximum voluntary isometric contraction (MVIC). compared a variety of proposed exercises to find the GMd activation and gluteus minimus muscles using surface electromyography ( 24). Nevertheless, researchers have reported controversial results with respect to the level of GMd activation ( 22, 23). Hip abduction has gained several regards among the exercises with different ranges of motion (ROM) from 25 to 45 degrees ( 16- 18) because it is easy to do and appropriately involves the GMd muscle ( 19- 21). lunge, single-limb squat, pelvic drop, and hip abduction, have been proposed to strengthen the GM ( 12- 15). Prescription of physical therapeutic exercise is an influencing route to recover the ability of contraction of a certain muscle ( 12). Several disorders such as low back pain ( 8, 9), fracture of the tibia ( 10), and injury to the anterior cruciate ligament ( 5, 11) are related to malfunction of the GM. It was reported that the GM frailty might influence other muscles, joints, and soft tissues in the vicinity of the pelvic region in addition to constraining hip joint kinesiological maneuvers ( 7). Furthermore, the stability and right positioning of the femur rely on the appropriate activation of the GM ( 5, 6). The most important activities of the gluteal muscles (GM), mainly gluteus maximus and gluteus medius (GMd), are to extend and abduct the hip joint during human gait ( 1, 2), and also to provide stability for the pelvis the standing position and during some phases of the gait ( 3, 4). Muscular weakness may adversely affect several functionalities that are expected to perform by gluteal muscles. The side-lying exercise may extremely involve the muscle, specifically in weaker individuals.Įxercise Strength Biomechanics Hip Abduction Muscle Activation 1. If the goal of the exercise starts to shift away from that, then you are liable to experience negative results from doing this exercise, such as soreness, pain, and pinching.Ĭheck out all of the details in this week’s episode of Trainer Tip Tuesday, and be sure to tune back in next week as we discuss more considerations when using the hip abduction machine.The rehabilitation of the weak hip abductor muscles may start with standing no-weight cases and continue by adding extra weights. When doing hip abduction, the focus of the exercise needs to be on squeezing and challenging the muscles on the outside of your hips. Oftentimes we see people sacrificing the health and safety of their spine and pelvis because they are trying to get “full” range of motion with this exercise, so how far is far enough? One thing that needs to be considered when doing hip abduction is how far apart you are going to bring your legs. The hip abduction machine can be one of the most effective ways to improve the strength and mobility of your hips, but only if you are using the machine correctly. This month on Trainer Tip Tuesday we will be discussing considerations when you are using the hip abduction machine.
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