The Clinical Effectiveness of a Physiotherapy Delivered Physical and Psychological Group Intervention for Older Adults With Neurogenic Claudication: The BOOST Randomized Controlled Trial

Williamson, Esther, Boniface, Graham, Marian, Ioana R., Dutton, Susan J., Garrett, Angela, Morris, Alana, Hansen, Zara, Ward, Lesley, Nicolson, Philippa J. A., Rogers, David, Barker, Karen L., Fairbank, Jeremy C., Fitch, Judith, French, David P., Comer, Christine, Mallen, Christian D., Lamb, Sarah E., Fielding, Roger and BOOST Research Group, (2022) The Clinical Effectiveness of a Physiotherapy Delivered Physical and Psychological Group Intervention for Older Adults With Neurogenic Claudication: The BOOST Randomized Controlled Trial. The Journal of Gerontology, Series A : Medical Sciences, 77 (8). pp. 1654-1664. ISSN 1079-5006

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Abstract

Background
Neurogenic claudication (NC) is a debilitating spinal condition affecting older adults’ mobility and quality of life.

Methods
A randomized controlled trial of 438 participants evaluated the effectiveness of a physical and psychological group intervention (BOOST program) compared to physiotherapy assessment and tailored advice (best practice advice [BPA]) for older adults with NC. Participants were identified from spinal clinics (community and secondary care) and general practice records and randomized 2:1 to the BOOST program or BPA. The primary outcome was the Oswestry Disability Index (ODI) at 12 months. Data were also collected at 6 months. Other outcomes included ODI walking item, 6-minute walk test (6MWT), and falls. The primary analysis was intention-to-treat.

Results
The average age of participants was 74.9 years (standard deviation [SD] 6.0) and 57% (246/435) were female. There was no significant difference in ODI scores between treatment groups at 12 months (adjusted mean difference [MD]: −1.4 [95% confidence intervals (CI) −4.03, 1.17]), but, at 6 months, ODI scores favored the BOOST program (adjusted MD: −3.7 [95% CI −6.27, −1.06]). At 12 months, the BOOST program resulted in greater improvements in walking capacity (6MWT MD: 21.7m [95% CI 5.96, 37.38]) and ODI walking item (MD: −0.2 [95% CI −0.45, −0.01]) and reduced falls risk (odds ratio: 0.6 [95% CI 0.40, 0.98]) compared to BPA. No serious adverse events were related to either treatment.

Conclusions
The BOOST program substantially improved mobility for older adults with NC. Future iterations of the program will consider ways to improve long-term pain-related disability.

Clinical Trials Registration Number: ISRCTN12698674

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