Interventions and outcome measures for motor recovery after ischemic stroke: The importance of intervention-outcome alignment

Abstract

Research on stroke recovery has shifted from acute survival to the restoration of function and quality of life. Although many rehabilitative and restorative interventions have shown promising benefits, trial outcomes remain inconsistent. A major limitation is the misalignment between intervention mechanisms and outcome measures, along with an underuse of minimal clinically important difference thresholds that define meaningful changes. This opinion focuses on motor recovery trials after ischemic stroke and highlights how inappropriate reliance on global disability scales, short-term endpoints, or mismatched impairment and activity measures can obscure true therapeutic effects. Ultimately, aligning intervention mechanisms with appropriate outcome domains represents a fundamental principle in the design of interpretable and clinically meaningful stroke recovery trials.