Lumbar Belts May Ease Lower Back Pain and Cut Medication Use, French Trial Finds

Adults with nonspecific lower back pain (搜索)搜索该疾病 who added a soft lumbar belt to their usual care reported less pain and greater improvements in their ability to manage daily activities than those receiving usual care alone, according to a French clinical trial published in JAMA Network Open. The LOMBACT trial, involving 168 adults across 17 French medical centers, suggests that an inexpensive, old-fashioned support may help some patients stay active—though the findings come with important caveats.

The trial enrolled adults whose current episode of nonspecific lower back pain (搜索)搜索该疾病 had lasted between one and six months. "Nonspecific" means the pain cannot be attributed to a recognizable, specific underlying condition or injury. Participants were randomly split into two groups: one added a soft, adjustable belt to their usual care, while the other continued with usual care alone, which may include physical and exercise therapy. Both groups were advised to remain active and could use their usual pain medication.

Belt users were asked to wear the support during daytime activities for 4 to 8 hours and to remove it for sleep. Heat sensors from some users showed that actual use averaged about 4 hours on days the belt was worn.

Measuring Daily Function and Pain

The researchers assessed whether back pain was interfering less with everyday life using the Oswestry Disability Index, a questionnaire that evaluates how much pain restricts daily activities. Scores improved in both groups, but more among people given a belt.

About 6 in 10 belt users reported at least a 30 percent reduction in daily limitations, compared with about 4 in 10 people receiving usual care alone. That level of improvement is commonly considered meaningful for an individual patient. In other words, more people in the belt group experienced a noticeable improvement in how much their back pain limited them—though it did not mean they were pain-free.

Pain itself also eased more in the belt group, including pain during movement. "A belt may help some patients stay active by reducing discomfort during movement and providing a subjective feeling of support or reassurance," Grenoble Alpes University Hospital rheumatologist Laurent Grange told ScienceAlert.

Medication Use and Possible Mechanisms

The medication findings offered another way to understand the possible benefit. Around half of belt users took pain medication during follow-up, compared with roughly two-thirds of the comparison group. This measured how many people used medication, not how many tablets they took or how often they needed pain relief.

The study did not establish how the belt produced its effects. Gentle support, feedback about body position, and greater confidence during activity are possible explanations, Grange said. He suggested that making movement more comfortable might help some patients keep going with daily activities, which is a central part of managing lower back pain.

Limitations and Safety

There are important limits to the findings. The average extra improvement in daily functioning was modest, even though the difference between groups was statistically significant. Both groups improved, and receiving a belt did not guarantee relief. Everyone knew who received a belt, and there was no sham belt for comparison, so expectations and reassurance could have influenced the results. Grange noted that even a convincing imitation might provide compression or a feeling of support, making those effects difficult to separate.

Pain and medication use were secondary outcomes, and the many additional comparisons were exploratory. The trial also cannot show that benefits last after the belt comes off, as participants were not asked to assess their symptoms specifically without it, and follow-up ended after 12 weeks.

Six belt users reported mild device-related problems, including discomfort or skin irritation. Two serious adverse events occurred during the trial—an inguinal hernia in the belt group and positional vertigo in the control group—but doctors considered them unrelated to the study.

Thuasne查看公司主页, the belt manufacturer, funded the research and paid three authors for participating in a scientific committee for the study. The paper states that the funder had no role in study design, data analysis, interpretation, or the decision to publish.

Broader Evidence Remains Mixed

Earlier evidence has been mixed, and the World Health Organization's 2023 guidance advises against routinely offering belts or lumbar braces for chronic primary lower back pain. The LOMBACT trial does not establish benefits for every type or duration of back pain. Chronic back pain, generally defined as pain lasting more than 3 months, is a particularly complicated condition that scientists are still trying to understand.

A separate Cochrane review, conducted by researchers based in Milan, Italy, from Humanitas University (搜索)搜索该词条 and the University of Milan查看公司主页, examined whether lumbar supports can help adults living with chronic low back pain (搜索)搜索该疾病. The review included eight randomized controlled trials involving a little more than 500 adults between 25 and 78 years old. Overall, the results did not provide convincing evidence that back braces substantially improve chronic low back pain. In most comparisons, the effects were either very small or too uncertain to draw a reliable conclusion, and the researchers rated the overall evidence as very low quality because the studies were generally small and their results imprecise.

There was one possible exception: when a lumbar support was added to pain medicines such as ibuprofen查看药品详情, some participants appeared to have a small reduction in pain over the short term. However, the researchers stressed that the available studies were too limited to show confidently that the brace itself produced the improvement.

The Cochrane review also noted that many of the included studies came from low- and middle-income countries, where access to physiotherapists, rehabilitation programs, and other active treatments may be more limited. In these settings, a low-cost brace may be easier to obtain than repeated sessions with trained health professionals. The trials did not identify clear side effects from wearing the devices, but the authors warned that harms were not always carefully reported.

"The main caution is that a lumbar belt should not replace active management," Grange told ScienceAlert. For some patients, the aim may be simple: a little support to help them keep moving.