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Effect of branched-chain amino acid supplements on muscle strength and muscle mass in patients with liver cirrhosis

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Objective

The aim of this study was to assess the effect of branched-chain amino acid (BCAA) supplements on muscle strength and muscle mass in patients with liver cirrhosis.

Patients and methods

We carried out a single-center, prospective study of adult cirrhotic patients receiving nutrition therapy at Shonan Kamakura General Hospital. A 28-day pretreatment observation period was followed by a 24-week treatment period. Patients who fulfilled the treatment criteria received one package of oral BCAA supplement powder twice a day and the response was evaluated. A responder to BCAA in muscle strength and muscle mass was defined as a patient with an increased skeletal muscle mass index and hand grip assessed 24 weeks after drug treatment commenced.

Results

Eighty-two patients fulfilled our criteria and completed the treatment. In terms of muscle strength, there were 59 (72.0%) responders to BCAA supplementation with a significant increase in hand grip from before treatment (22.2±6.3 kg) to after treatment (23.9±6.4 kg) (P<0.001). In terms of muscle mass, 36 (43.9%) patients responded to BCAA with a slight decrease in skeletal muscle mass index from before treatment (7.40±1.62) to after treatment (7.30±1.49) (P=0.333).

Conclusion

BCAA supplementation improved low muscle strength in patients with chronic liver disease, but did not increase muscle mass during the treatment period.
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Keywords: branched-chain amino acid; liver cirrhosis; malnutrition; muscular atrophy

Document Type: Research Article

Affiliations: 1: Gastroenterology, Department of Gastroenterology and Internal Medicine, Kitasato University School of Medicine, Kanagawa, Japan 2: General Internal Medicine, Shonan Kamakura General Hospital 3: Department of Gastroenterology and Internal Medicine, Kitasato University School of Medicine, Kanagawa, Japan 4: Gastroenterology

Publication date: December 1, 2017

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