Abstract

Successful long-term treatment of spasticity in people with multiple sclerosis (pwMS) is challenging. We investigated the effects of multidisciplinary inpatient rehabilitation (MIR) and an individualized self-training program delivered by an app on spasticity in pwMS. First, we assessed the efficacy of 4-week MIR in ambulatory pwMS (Expanded Disability Status Scale < 7.0) with moderate to severe lower limb spasticity (defined by ≥4 points on the Numeric Rating Scale for spasticity [NRSs]) in a cohort of 115 pwMS at seven rehabilitation centers in Austria. In the case of a clinically relevant improvement in spasticity of ≥20% on the NRSs following MIR (n=94), pwMS were randomly allocated in a 1:1 ratio to either the newly designed MS-Spasticity App or to a paper-based self-training program for 12weeks. The primary outcome was change in NRSs (German Clinical Trials Registry DRKS00023960). MIR led to a significant reduction of 2.0 points on the NRSs (95% confidence interval [CI] = 2.5-2.0, p<0.000). MIR was further associated with a statistically significant improvement in spasticity on the Modified Ashworth Scale, strength, and all mobility outcomes. Following MIR, self-training with the MS-Spasticity App was associated with a sustained positive effect on the NRSs, whereas paper-based self-training led to a worsening in spasticity (median NRSs difference = 1.0, 95% CI = 1.7-0.3, p=0.009). The MS-Spasticity App was also associated with a significantly better adherence to self-training (95% vs. 72% completion rate, p<0.001). In pwMS, MIR is able to significantly improve lower limb spasticity, strength, and mobility. Following MIR, an individually tailored antispasticity program delivered by an app leads to sustained positive long-term management.

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