• Yoshifumi Kido, Yoshihiro Yoshimura, Hidetaka Wakabayashi, Fumihiko Nagano, Ayaka Matsumoto, Takahiro Bise, Sayuri Shimazu, and Ai Shiraishi.
• Center for Sarcopenia and Malnutrition Research, Kumamoto Rehabilitation Hospital, Kumamoto, Japan.
• Nutrition. 2023 Mar 1; 107: 111944111944.

ObjectivesThis study aimed to examine the association between improvement in sarcopenia and the recovery of urinary and defecatory independence in patients undergoing convalescent rehabilitation.MethodsA retrospective cohort study was conducted of 849 older inpatients after a stroke. Of these, patients with sarcopenia and dependent voiding movements were targeted. Sarcopenia was assessed according to the Asian Working Group for Sarcopenia 2019, and diagnosed using handgrip strength (HGS) and skeletal muscle-mass index. Outcomes were sphincter control items of the Functional Independence Measure (FIM) at the time of discharge: urinary (FIM-Bladder) and defecation (FIM-Bowel). A score of six or higher was considered independent. A logistic regression analysis was used to determine whether sarcopenia improvement was associated with outcomes.ResultsOf the patients recruited, 151 were diagnosed with sarcopenia at baseline, of whom patients dependent in urination (109 patients) and defecation (102 patients) were included in the analysis. The multivariate analysis showed that improvement in sarcopenia (odds ratio [OR]: 3.28; 95% confidence interval [CI],1.01-10.70; P = 0.048) and HGS (OR: 6.25; 95% CI, 1.45-26.90; P = 0.014) were independently associated with FIM-Bladder at the time of discharge. Improvement in HGS (OR: 4.33; 95% CI, 0.99-18.90; P = 0.048) was independently associated with FIM-Bowel at the time of discharge CONCLUSIONS: Improvement in sarcopenia and muscle strength during hospitalization may have a positive effect on urinary independence in stroke patients undergoing convalescent rehabilitation, and improvement in muscle strength may have a positive effect on defecation independence. Multidisciplinary sarcopenia treatment should be implemented in addition to conventional rehabilitation for these patients.Copyright © 2022 Elsevier Inc. All rights reserved.

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