Dry Needling vs. Stretching for Non-Specific Low Back Pain

The Hot Pack is a therapeutic intervention device designed to deliver localized heat to targeted areas of the body for a duration of 15 minutes. It provides deep, soothing heat that helps to relax muscles, increase blood circulation, and reduce pain and stiffness. The device is typically used to treat conditions such as muscle tension, joint pain, and chronic discomfort. By applying consistent heat, the Hot Pack promotes improved tissue flexibility and alleviates muscle spasms. It is user-friendly, ensuring safe and effective use when applied to affected areas, with adjustable heat settings to accommodate individual needs.

The Mulligan Sustained Natural Apophyseal Glides (SNAG) technique for the lumbar spine will be applied to participants in both groups. Participants will assume a stride standing position. The therapist will stand behind the participant as described by Mulligan, supporting the patient during the application of the technique and ensuring the required movement can be performed easily. The therapist will apply the mobilizing force parallel to the facet joint plane (in the cephalic direction) over the spinous processes of the respective symptomatic spinal levels in a sustained manner while the patient performs trunk flexion. The flexion position will be maintained for a few seconds, after which the participant will return to the starting position, with the therapist continuing to maintain the mobilizing force. Three sets of six repetitions will be performed on each symptomatic lumbar spinal level.

Passive Hamstring (HM) stretching will be performed by a physical therapist experienced in the treatment of chronic low back pain (CLBP) and trained in the study protocol. The procedure will follow manual therapy stretching standards \[22\]. First, the physical therapist will explain the procedure to the participant and reassure them that the stretching can be stopped if it becomes too difficult to tolerate. With the participant lying supine, the stretched limb will be placed in maximal, pain-free hip flexion with the knee flexed. The physical therapist will then slowly and gradually extend the knee to the maximal pain-free position. In this position, participants should feel an intense stretching sensation in the back of the thigh. If this position causes pain in the lower back, the hip flexion will be reduced to the maximal, pain-free range of motion (ROM). A stopwatch will be used to ensure that the final position is held for 1 minute for each limb.

"Subjects will be positioned prone on a treatment table with their feet over the edge of the table. Dry needling (DN) will be applied to the hamstring muscles at three locations, each for 1 minute, using a fast in-out, cone-shaped technique.~Subjects will receive DN three times a week. To standardize the approach and optimize the application of DN, the points will be located approximately close to the motor points of the hamstring muscles.~Two of the locations are in the long and short heads of the biceps femoris, at points located at 30% and 60% of a straight line from the ischial tuberosity to the fibular head. For the semitendinosus and semitendinosus muscles, the DN location will be selected at 60% of a straight line from the ischial tuberosity to the medial femoral epicondyle.~Disposable sterilized stainless steel needles (0.3×60 mm; DongBang AcuPrime Ltd, Korea) will be used."

The TENS (Transcutaneous Electrical Nerve Stimulation) unit is a therapeutic device designed to alleviate pain through the use of electrical impulses. It works by delivering low-voltage electrical currents via electrodes placed on the skin, targeting the affected area. These electrical pulses help to block pain signals sent to the brain and stimulate the production of endorphins, the body's natural pain relievers. The TENS unit is commonly used for managing both acute and chronic pain conditions, including muscle pain, joint pain, and nerve-related discomfort. The device is adjustable, allowing users to customize the intensity, duration, and frequency of the electrical stimulation to meet their individual needs. It is non-invasive, easy to use, and can be applied at home or in clinical settings for effective pain management.