Upper Limb Performance in Daily Life Approaches Plateau Around Three to Six Weeks Post-stroke.
Catherine E Lang, Kimberly J Waddell, Jessica Barth and 3 others
PMID 34510934WHAT IT FOUND
Upper limb use in daily life plateaued 3-6 weeks post-stroke, before impairment or capacity stabilized.
This suggests motor habits form early. Clinicians should assess actual arm use, not just clinical test scores, to guide timely behavioral interventions.
Key findings
01Upper limb performance in daily life plateaued around 3 weeks (use ratio) to 6 weeks (paretic hours) post-stroke.
02Performance plateaus occurred significantly before capacity plateaus and trended toward preceding impairment plateaus, contradicting the hypothesis that capacity drives performance.
03Better initial capacity, dominant limb involvement, and fewer depressive symptoms were associated with higher eventual upper limb performance levels.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
Single-site recruitment from one US hospital limits generalizability to other healthcare systems and populations. Enrollment stopped early due to the COVID-19 pandemic, which may have disrupted participants' daily routines and affected performance data. Accelerometers measure movement quantity and symmetry but cannot assess movement quality or distal hand movements, potentially missing nuances of functional recovery. The study did not control for the type or intensity of rehabilitation services received, as these were part of routine care. The association between lower rehabilitation use and faster recovery is likely confounded by initial severity, not a causal effect of receiving less therapy.
Declared interests
No conflicts of interest or funding sources were declared in the provided text.
The easy way to misread this
Do not interpret the finding that 'less rehabilitation' was associated with 'quicker recovery' as evidence that therapy is harmful or unnecessary. This association likely reflects that patients with milder initial deficits recovered faster and therefore required fewer rehabilitation services, rather than services impeding recovery.