- Design
- Systematic review and meta-analysis of 36 cohort studies
- Population
- Stroke patients with and without sarcopenia
- Primary outcome
- Poor global functional prognosis (modified Rankin Scale)
- Effect
- Odds ratio 2.43 (95% CI 1.95 to 3.03); motor and cognitive scores lower by about 0.95 standardised units
Sarcopenia and stroke often coexist in older patients, and this meta-analysis of 36 cohort studies asked how much sarcopenia shapes recovery across several domains.
Stroke patients with sarcopenia had more than double the odds of a poor global functional outcome on the modified Rankin Scale (odds ratio 2.43, 95% CI 1.95 to 3.03). Motor and cognitive recovery scores were substantially lower in the sarcopenia group (both standardised mean differences around -0.95), while the higher risk of swallowing dysfunction did not reach significance.
The practical step is to fold sarcopenia screening — grip strength, muscle mass and function — into stroke assessment, and to act on it with resistance exercise and protein-adequate nutrition in rehabilitation. This is observational, so sarcopenia is a prognostic marker and a plausible target, not yet proof that treating it changes stroke outcomes.
- Meta-analysis of 36 cohort studies of sarcopenia and stroke recovery.
- Sarcopenia more than doubled the odds of poor global outcome (modified Rankin odds ratio 2.43, 95% CI 1.95 to 3.03).
- Motor and cognitive recovery scores were markedly lower with sarcopenia (standardised mean differences around -0.95).
- The higher swallowing-dysfunction risk was not statistically significant.
- Screen for sarcopenia in stroke and target it with resistance exercise and adequate protein.
Why it matters
It identifies a measurable, modifiable factor that flags stroke patients at risk of poor functional and cognitive recovery.
Don't overread it
Observational data with publication bias noted; sarcopenia predicts worse recovery but treating it is not yet shown to change stroke outcomes.
The statistics, in plain English
An odds ratio of 2.43 with the interval clear of 1.0 is a strong association; because the studies are observational, sarcopenia may partly be a marker of overall frailty rather than an independent cause of poor recovery.
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