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  • Title: Association between Branched-Chain Amino Acid Intake and Physical Function among Chinese Community-Dwelling Elderly Residents.
    Author: Liao M, Mu Y, Su X, Zheng L, Zhang S, Chen H, Xu S, Ma J, Ouyang R, Li W, Cheng C, Cai J, Chen Y, Wang C, Zeng F.
    Journal: Nutrients; 2022 Oct 18; 14(20):. PubMed ID: 36297051.
    Abstract:
    This study aimed to evaluate the potential associations of dietary BCAAs (isoleucine, leucine, and valine) with physical function in the elderly Chinese population. A validated semiquantitative food frequency questionnaire and anthropometric and physical function measurements were used to collect data. We modeled trends in physical function indicators for BCAA quartiles using multivariate linear regression models. Among 4336 (43.97% men) participants aged 72.73 ± 5.48 years, a higher dietary intake of BCAAs was positively associated with increased handgrip strength (all p trends < 0.001), shorter times for 4-m fast walking (all p trends < 0.001) and repeated chair rises (all p trends < 0.001). No linear association was found between subtypes of amino acids and any physical functions (all p trends > 0.05). Individuals in the highest quartiles of BCAA intake had a reduced risk of developing low muscle strength, and the multiadjusted odds ratios (ORs) and 95% confidence intervals (95% CIs) for women and men were 0.50 (0.38−0.65) and 0.67 (0.50−0.91), respectively. Similarly, higher BCAA consumption was associated with a lower risk of developing low physical performance (4-m walking speed: OR = 0.68 [0.50−0.93]; repeated chair rises: OR = 0.66 [0.54−0.81]). Higher dietary BCAA intake might be beneficial for physical function in the elderly population.
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