Group Chair-stand Exercise and Cognitive Recovery in Sarcopenic Stroke Patients.

Background: Evidence on the effectiveness of exercise for cognitive recovery in patients with sarcopenia is limited. This study examined the association between group-based chair-stand exercise and cognitive improvement during convalescent rehabilitation.

Methods: This retrospective cohort study included stroke patients with sarcopenia and impaired cognitive level, defined as a Functional Independence Measure (FIM)-cognitive score ≤23, admitted between 2016 and 2023. All patients received standard rehabilitation and participated in group-based chair-stand exercise twice daily. The frequency of exercise during hospitalization was recorded. The primary outcome was FIM-cognitive score at discharge. Secondary outcomes were handgrip strength (HG) and FIM-motor score. Multivariate linear regression analysis was used to examine associations between exercise frequency and outcomes, adjusting for potential confounders.

Results: Of the 1,220 patients admitted, 273 sarcopenic stroke patients with reduced cognitive level (mean age 80 years; 48% male) were included in the final analysis dataset; the median (IQR) frequency of performing chair-stand exercise per day was 43 (20-71). Higher exercise frequency was independently associated with better FIM-cognitive score at discharge (β=0.217, p<0.001), greater HG (β=0.146, p=0.008), and improved FIM-motor score (β=0.295, p<0.001).

Conclusion: Frequent participation in group-based chair-stand exercise was associated with improvements in cognitive and physical function in sarcopenic stroke patients. Incorporating simple, repetitive resistance exercises into rehabilitation programs may enhance recovery outcomes in this vulnerable population.