Abstract
BackgroundThe clinical importance of skeletal muscle characteristics for improving gait ability of stroke survivors is increasing. We aimed to examine the association between muscle quantity and quality at discharge and changes in gait independence at the time of 1 year after discharge in patients with stroke. MethodsThis prospective observational study included 100 patients with stroke who were admitted to a convalescent rehabilitation ward. We defined muscle quantity and quality operationally as muscle thickness and echo intensity observed in ultrasonography images, respectively, and measured quadriceps muscle on the paretic and non-paretic sides at the time of discharge. The outcome measured in our study was changes in gait independence 1 year after discharge, as assessed by the Functional Independence Measure gait assessment tool score. ResultsAmong the study participants, 23 (23.0 %) were assessed to have reduced gait independence, while 77 (77.0 %) were evaluated to have improved or maintained gait independence. Our multivariate logistic regression analysis revealed that only muscle quantity on the paretic side was significantly associated with an improvement or maintenance of gait independence (odds ratios 3.32; 95 % confidence interval 1.01–10.95; p = 0.049). ConclusionsOur findings revealed that an improvement in gait independence 1 year after discharge was influenced by quadriceps muscle quantity on the paretic side at the time of discharge in patients with subacute stroke. This finding highlights the importance of lower limb muscle quantity on the paretic side as a clinically significant factor that influences the improvement in gait ability after hospital discharge.
Published Version
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