Intensity-dependent clinical effects of an individualized technology-supported task-oriented upper limb training program in Multiple Sclerosis: A pilot randomized controlled trial.

BACKGROUND Task-oriented training promotes functional recovery in Multiple Sclerosis (MS). Know-how to determine an individualized training intensity and intensity-dependent effects are, however, unknown. The objective of the study was to investigate the feasibility and the clinical effects of a task-oriented upper limb training program at different individualized training intensities with conventional occupational therapy. METHODS People with MS (n = 20, EDSS range 4-8) were divided into three groups, receiving task-oriented training at 100% (n = 7) or 50% (n = 8) of their individual maximal number of repetitions, or conventional occupational therapy (n = 5). Effects were evaluated using different upper limb capacity and perceived performance measures on activity level, and measures on body functions and structures level. RESULTS Mixed model analyses revealed significant improvements (p < 0.05) over time on the Box and block test (BBT), Action Research Arm Test and the Manual Ability Measure-36. Significant interaction effects (group*time) in favor of the task-oriented group training at the highest intensity were found for BBT and static fatigue index during a maximal sustained handgrip strength test. CONCLUSION All participants were able to perform the task-oriented training at their individualized intensity without any adverse effects. Several improvements over time were found for all intervention groups, however the results suggest a superiority of task-oriented training at 100%. CLINICAL TRIAL REGISTRATION NUMBER ON CLINICALTRIALS.GOV: = NCT02688231.

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