Higher Branched-Chain Amino Acid Intake Is Associated with Handgrip Strength among Korean Older Adults

Nutrients

Seonghee Park¹  Kyong Park¹  Hyoungsu Park²  Minjeong Chae³ 

[1] Department of Food and Nutrition, Yeungnam University, Gyeongsan 38541, Gyeongbuk, Korea;Health & Nutrition R&D Group, Maeil Dairies Co., Ltd., Pyeongtaek 17714, Gyeonggi, Korea;Nutrition and Functional Food Research Division, National Institute of Food and Drug Safety Evaluation, Cheongju 28159, Chungbuk, Korea;

关键词: branched-chain amino acids;    leucine;    dietary intake;    older adults;    handgrip strength;   

DOI  :  10.3390/nu13051522

来源: DOAJ

【 摘 要 】

Sarcopenia is a disease of old age characterized by decreased muscle mass and strength. Branched-chain amino acids (BCAAs) promote muscle mass synthesis and increase muscle strength. We aimed to develop a dietary amino acid database and to examine the association between BCAA intake and handgrip strength in Korean older adults. Data from the Korea National Health and Nutrition Examination Survey 2014–2018 were used. Overall, 4852 participants aged ≥65 years were included in the study. Demographic, lifestyle, and health data were obtained through interviews and questionnaires. The 24-h recall method was used to assess dietary intake. An amino acid database was established using the 9th revision of the Korean Standard Food Composition Table. The mean handgrip strength was estimated from triplicate measurements obtained using the dominant hand. Multivariable linear regression analysis was performed to assess the association between BCAA intake and handgrip strength. Grains greatly contributed to amino acid intake; however, a significant negative association was observed between handgrip strength and increased BCAA intake through grains. In the fully adjusted model, leucine intake and handgrip strength showed a positive association. Thus, consuming BCAAs (especially leucine) via a variety of food sources can help maintain muscle health in older people.

【 授权许可】

Unknown