The Effect of Percussive Massage Therapy Using a Heat Therapy Attachment on Pain and Disability in Patients With Chronic Low Back Pain

In 2020, low back pain affected an estimated 619 million people worldwide, and this number is projected to reach 843 million by 2050, with a disproportionate burden among socioeconomically disadvantaged populations. To avoid harmful and ineffective treatments, evidence supporting the safety, effectiveness, and cost-efficiency of interventions should be integrated into routine care, and greater investment in clinical research is needed to reduce the gap between research and clinical practice.

Clinical practice guidelines indicate that exercise is a primary non-invasive approach for reducing pain and disability in chronic low back pain. Adjunct non-pharmacological methods such as electrotherapy and massage are often used to enhance treatment effects. Although the evidence for vibration therapy is still emerging and has focused mainly on whole-body vibration, local vibration remains a promising but under-studied option for individuals with low back pain.

Local vibration can be delivered using different modalities, one of which is percussive massage therapy (PMT). PMT is applied via a mechanical device that delivers low-frequency pressure pulses to the skin, transmitting vibration to the underlying myofascial tissues. It is widely used as a low-cost and accessible adjunct for pain management, injury prevention, and rehabilitation. Previous studies have reported that vibration-based massage interventions are safe and well tolerated, and PMT has shown beneficial effects in neck pain and in selected low back pain populations, although evidence remains limited.

Soft tissue massage may alleviate pain by increasing local blood flow and oxygenation and by modulating neurophysiological pathways, including stimulation of large-diameter afferent fibers that can reduce pain perception via gate control mechanisms. Similarly, localized vibration can increase tissue perfusion, oxygen saturation, and temperature. PMT, which delivers low-frequency, localized mechanical pulses to myofascial tissues, may further influence pain through activation of mechanoreceptors and central pain-modulating pathways. These effects provide a rationale for investigating the impact of PMT delivered with a heat-therapy attachment on pain and disability in individuals with chronic low back pain.

Studies investigating mechanisms related to the effects of PMT applied to the low back have examined its potential effects on posture-related parameters, trigger points, and thoracolumbar fascia (TLF) characteristics, including echo intensity and thickness. Proposed mechanisms include reductions in myofascial stiffness through mechanical loading and heat-related changes that may influence tissue viscoelasticity, as well as neurophysiological effects that could reduce fascial tension and improve tissue extensibility. Acute PMT has been reported to increase tissue temperature and reduce TLF echo intensity and perceived stiffness, while TLF thickness appears largely unchanged across short- to longer-term observations in both healthy individuals and pationts with low back pain.