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Effect of resistance training on lumbar extension strength


    This research study aimed to demonstrate how strength exercise testing on the pelvic region can evaluate lumbar extension and range of motion. By performing different exercises and a maximum isometric strength test, subjects were ultimately able to increase their pelvic stabilization and gain strength. The notable progress in patients’ strength was documented in the study.


    Low back pain has become increasingly prevalent in our society, with a majority of individuals expected to experience it at some point in their lives. This condition imposes a significant burden on individuals, affecting them physically, mentally, and emotionally. For instance, injuries leading to low back pain may force patients to miss work, resulting in a loss of income that hampers their ability to cover medical expenses, creating a cycle of financial strain.

    Medical professionals are facing challenges in understanding the complexities of low back pain and are diligently working to identify optimal treatments. One primary contributor to low back pain is often the weakness in the lumbar muscles of the spine. To address this, new rehabilitation approaches are focusing on strengthening exercises aimed at restoring muscle function. Central to this effort is pelvic stabilization, which plays a crucial role in enhancing strength and reducing low back pain.

    In a recent study, the MedX Lumbar Extension machine was utilized to train and strengthen participants’ pelvic stabilization. Twenty-five volunteers were divided into two groups: a training group that underwent sessions once a week for ten consecutive weeks, and a control group that did not participate in training. The training regimen involved 6 to 15 repetitions of full-range-of-motion exercises targeting the lumbar spine using the MedX machine.

    Each participant also underwent a maximum isometric strength test to assess pelvic stability, with the machine’s resistance adjusted according to their progress. The results revealed that pelvic stabilization significantly improved lumbar extension strength, as evidenced by increased isometric strength among the trained subjects. Moreover, greater pelvic stability correlated with notable improvements in both lumbar extension and flexion, underscoring the importance of isolating the lumbar region through pelvic stabilization for enhancing strength and reducing low back pain.