An intervention combining an individualized walking program and education and significantly reduced low back pain recurrence in adults, compared with controls, based on data from approximately 700 individuals.
Exercise, including walking, is recommended to prevent recurrence of low back pain, but data on the effectiveness and cost-effectiveness of walking as an intervention are lacking, wrote Natasha C. Pocovi, PhD, of Macquarie University, Sydney, Australia, and colleagues.
In a study known as WalkBack, published in the Lancet, the researchers randomized 351 adults aged 18 years and older with a history of more than two prior episodes of low back pain to an intervention and 350 to no intervention.
The intervention consisted of six sessions of education and progressive walking with a physiotherapist over 6 months; both intervention and control groups were followed for a minimum of 12 months and a maximum of 36 months. The mean age of the participants was 54 years, and 81% were female. The primary outcome was the number of days to recurrence of low back pain severe enough to limit activity, based on monthly self-reports.
The intervention was significantly more effective at preventing activity-limiting low back pain recurrence, compared with no intervention (hazard ratio, 0.72; P = .0002), with a median of 208 days and 112 days to recurrence in the intervention and control groups, respectively.
The risk of any low back pain recurrence also was significantly reduced in the intervention group, compared with the controls (HR, 0.80; P = .0066); as was the risk of care-seeking recurrence of low back pain (HR, 0.57; P < .0001).
Overall, the experience of at least one adverse event over 12 months was similar between the intervention and control groups (52% and 54%, respectively), but significantly more adverse events related to lower extremities occurred in the intervention group, compared with the control group (100 vs 54). The intervention also was more likely to be cost effective, compared with a no-treatment control, the researchers wrote.
The findings were limited by several factors including the relatively homogeneous population and that neither the therapists nor participants were masked to group allocation. In addition, the study was conducted during the COVID-19 pandemic, so a telehealth model of video consultations was used instead of in-person meetings, but this protocol change allowed for inclusion of participants from diverse locations including rural and remote areas, the researchers said.
More research is needed to assess the implementation of a walking and exercise intervention as part of a discharge plan after an episode of low back pain and to examine the effectiveness of an intervention involving fewer sessions and a range of healthcare providers, they added. However, the results support the value of the intervention, which has a strong potential for successful implementation because of accessibility and low cost.
Preventive Interventions Need More Real-World Research
“Preventive interventions for back pain are an important yet neglected consideration,” Diarmuid Denneny, a doctoral candidate at Brunel University London, and Jackie Walumbe, PhD, of the University of Oxford (England), wrote in an accompanying editorial.
Although recurrence of low back pain is common, guidance on prevention and management is lacking, they said. Strengths of the current study include attention to patient and public preferences in the study design; however, the majority of the participants were of relatively high socioeconomic status and 89% reported post-secondary education.
“Given that pain is known to have a higher impact on marginalized and minoritized groups and those experiencing socioeconomic deprivation, we recommend caution in extrapolating these findings to different contexts,” the editorialists wrote.
They also cautioned that the complex nature of the intervention, which included not only walking but education and physiotherapist appointments, might make it difficult to isolate walking as the key factor in the patients’ improvement. The editorialists also emphasized the need for studies of similar interventions conducted by alternative providers including exercise professionals and digital platforms.
However, the WalkBack trial represents progress toward greater support for individuals with recurrent back pain and may be a foundation for other research involving how other forms of physical activity compare in improving back pain, with attention to the role of publish health in delivering physical activity interventions, they said.
The study was supported by the National Health and Medical Research Council, Australia. Dr. Pocovi disclosed scholarships funded by the National Health and Medical Research Council Low Back Pain Centre of Research Excellence (ANZBACK) and Macquarie University. Mr. Denneny disclosed support from an Economic and Social Research Council fellowship, and disclosed consulting fees from Live Well with Pain and Leva clinic; a grant from the Chartered Society of Physiotherapy. Dr. Walumbe disclosed travel support from the Chartered Society of Physiotherapy Charitable Trust.