Early, Intense Rehabilitation Fails to Improve Outcome After Intra-Striatal Hemorrhage in Rats.

The study was conducted in rats, and the authors explicitly note that pre-clinical stroke studies often fail to translate to human clinical settings. The specific model used (collagenase-induced striatal hemorrhage) may not fully replicate the complexity of human intracerebral hemorrhage. The beam walking task was not sensitive enough to detect deficits, limiting the ability to assess balance recovery. The authors suggest that high therapeutic intensity might negatively impact rehab efficacy in ICH, or that striatal injury is less amenable to rehab than cortical injury, but these are hypotheses not tested here.

The authors declared no potential conflicts of interest. Funding was provided by the Heart and Stroke Foundation of Canada, a Canada Research Chair, the University of Alberta Faculty of Medicine and Dentistry, and the Canadian Institutes of Health Research.

Do not interpret this null result as evidence that early intensive rehabilitation is ineffective for human stroke patients. This is an animal study with specific constraints (collagenase model, striatal lesion) that the authors state may not translate, and human clinical trials like AVERT have shown different, complex relationships between mobilization intensity and outcomes.