Trial reportMultiple sclerosis and related disorders2026
Results of a pilot randomized controlled trial of a COM-B-based physical activity behavior-change intervention in people newly diagnosed with multiple sclerosis.
Trial report in Multiple sclerosis and related disorders, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
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Abstract
purposeThis pilot randomized controlled trial (RCT) evaluated the efficacy of a behavioral intervention grounded in the Capability-Opportunity-Motivation-Behavior (COM-B) model delivered via online coaching and newsletters for promoting physical activity (PA) in people newly diagnosed with multiple sclerosis (PNDwMS).
methodsThis unblinded, parallel-group, RCT included 50 PNDwMS (disease duration ≤ 2 years) who were randomized into either PA intervention (n = 25) or waitlist control (WLC) (n = 25) conditions. The intervention was delivered over 16 weeks by a researcher uninvolved in randomization. Data were collected pre- and post-intervention. Primary outcomes included device-measured (steps/day, light PA [LPA], moderate-to-vigorous PA [MVPA]) and self-reported PA (Godin Leisure-Time Exercise Questionnaire [GLTEQ] and International Physical Activity Questionnaire [IPAQ]). Secondary outcomes included fatigue, depression, anxiety, and health-related quality of life (HRQOL). Data were analyzed (intent-to-treat) using condition-by-time mixed-effects ANOVA.
resultsThere were significant condition-by-time interactions on device-measured (MVPA) and self-reported (IPAQ) PA as well as depression and mental HRQOL (all p ≤ .05). There were moderate and significant improvements in MVPA (Δ11.2 min/day, 95% CI: 8.8, 13.7, d = 0.5) and IPAQ (Δ11.4 units, 95% CI: 10.4, 12.3, d = 0.7), HADS-D (Δ1.4 units, 95% CI: 1.3, 1.5, d = 0.5), and SF-12 MCS (Δ5.6 units, 95% CI: 5.1, 6.1, d = 0.6) scores in the PA intervention condition, but not in the WLC condition.
conclusionThese findings provide preliminary evidence for the efficacy of the COM-B-based behavioral intervention for increasing PA and improving mental health outcomes in PNDwMS.
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