Objective: The objective of this work was to evaluate if task-specific training (TST) preceded by bilateral upper limb motor priming (BUMP) reduces upper limb impairment more than TST preceded by control priming ([CP], sham electrical stimulation) in people with chronic stroke.
Methods: In this single-blind, randomized controlled trial, 76 adults with moderate to severe upper limb hemiparesis ≥6 months post-stroke were stratified by baseline impairment and randomized to receive either BUMP or CP prior to receiving the same TST protocol. Participants completed 30 h of treatment in 15 days over 6 weeks. The primary outcome was change in Fugl-Meyer upper extremity (FMUE) from baseline to 8-week follow-up. We also report clinically meaningful response rates defined as a change in FMUE score of 6 points or greater.
Results: In response to treatment, both groups improved to a significant extent at follow-up, exceeding the FMUE minimum clinically important difference. Those in BUMP and CP saw a mean change of 5.68 (SE 0.76, p < 0.001) and 5.87 (SE 0.76, p < 0.001) respectively. There was no significant difference between treatment arms (mean difference of -0.20 (95% CI = [-2.37, 1.97], SE = 1.08, p = 0.86)). A response of ≥6 points was observed in 46% in BUMP and 50% in CP.
Interpretation: There was no beneficial effect of BUMP. The magnitude of change seen in both groups reflects the largest improvement achieved with just 22.5 h of TST in this population, matching or out-performing more invasive, time-intensive, and costly interventions proposed in recent years.
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http://dx.doi.org/10.1002/acn3.52271 | DOI Listing |
J Orthop Surg Res
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Department of Orthopaedic Surgery, Henry Ford Hospital, Henry Ford Health, 2799 W. Grand Blvd CFP-6, Detroit, MI, 48202, USA.
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