Abstract
Background and aims
Despite the association between sarcopenia and non-alcoholic fatty liver disease (NAFLD), no study has evaluated the predictive role of NAFLD in sarcopenia. We investigated impact of NAFLD on the risk of low muscle mass (LMM) and low muscle strength (LMS) in a nationwide multicenter study.
Methods
A total of 1595 community-dwelling people aged 70–84 years were followed for 2 years in the Korean Frailty and Aging Cohort Study. Muscle mass was estimated by dividing appendicular skeletal muscle mass (ASM) by body mass index (BMI). Muscle strength was measured as handgrip strength (HGS) divided by BMI. The sex-specific lowest quintiles of ASM/BMI and HGS/BMI of the study population were used as cutoffs for LMM and LMS, respectively. The risk of LMM and LMS were assessed according to hepatic steatosis index (HSI) and fatty liver index (FLI) quartiles.
Results
As HSI quartiles increased, the LMM risk increased gradually, after adjusting for age, sex, lifestyle factors, comorbidities, and several causative factors (insulin resistance, inflammation, and vitamin D) (Q4 vs. Q1 OR [95% CI] 3.46 [2.23–5.35]). The increased risk of LMS was even higher according to HSI quartiles (Q4 vs. Q1 5.81 [3.67–9.21]). Multivariate analyses based on FLI showed similar results. People with NAFLD (HSI > 36) were at higher risk of developing LMM and LMS compared to those without (1.65 [1.19–2.31] and 2.29 [1.61–3.26], respectively).
Conclusions
The presence of NAFLD may predict future risk of LMM and LMS, with greater impact on LMS than on LMM.
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Data availability
Access to anonymized data may be granted following review.
Abbreviations
- ALT:
-
Alanine aminotransferase
- ASM:
-
Appendicular skeletal muscle mass
- AST:
-
Aspartate aminotransferase
- BMI:
-
Body mass index
- DXA:
-
Dual-energy X-ray absorptiometry
- FLI:
-
Fatty liver index
- FNIH:
-
Foundation for the National Institutes of Health
- FPG:
-
Fasting plasma glucose
- GGT:
-
γ-Glutamyl transferase
- HbA1c:
-
Hemoglobin A1c
- HGS:
-
Handgrip strength
- HOMA-IR:
-
Homeostatic model assessment of insulin resistance
- hs-CRP:
-
High-sensitivity C-reactive protein
- HIS:
-
Hepatic steatosis index
- KFACS:
-
Korean Frailty and Aging Cohort Study
- KNHANES:
-
Korean National Health and Nutrition Examination Survey
- LMM:
-
Low muscle mass
- LMS:
-
Low muscle strength
- NAFLD:
-
Nonalcoholic fatty liver disease
- OR:
-
Odds ratio
- SBP:
-
Systolic blood pressure
- TG:
-
Triglycerides
- WC:
-
Waist circumference
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Acknowledgements
This study was supported by grant from the Korea Health Technology R&D Project through the Korean Health Industry Development Institute (KHIDI) funded by the Ministry of Health and Welfare of Korea (grant number: HI15C3153) and grant from the National Research Foundation of Korea (NRF) funded by the Ministry of Education of Korea (grant number: 2020R1I1A1A01070499) This work was also supported by Korea University Guro Hospital (Korea Research-Driven Hospital) and grant funded by Korea University Medicine (K2115701).
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ER, SYH, CWW and KMC participated in the design of the study. ER, JL, SJS, HJK, YSP, SL, BLC, HCJ, BJK, CWW and KMC contributed to data collection and quality control. SYH performed the statistical analysis. ER, HJY, SHB, CWW and KMC contributed to analysis and interpretation of data. ER, CWW and KMC wrote the paper. All authors read and approved the final manuscript.
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Eun Roh, Soon Young Hwang, Hye Jin Yoo, Sei Hyun Baik, Jin-Hee Lee, Sang Joon Son, Hyeon Ju Kim, Yong Soon Park, Sam-Gyu Lee, Be Long Cho, Hak Chul Jang, Bong Jo Kim, Miji Kim, Chang Won Won and Kyung Mook Choi have nothing to disclose.
Ethical approval
The study was performed according to the 1964 Declaration of Helsinki. The study protocol for the KFACS was approved by the Institutional Review Board of Korea University Guro Hospital (approval no. 2020GR0134).
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Informed consent was obtained from all individual participants included in the study.
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Roh, E., Hwang, S.Y., Yoo, H.J. et al. Impact of non-alcoholic fatty liver disease on the risk of sarcopenia: a nationwide multicenter prospective study. Hepatol Int 16, 545–554 (2022). https://doi.org/10.1007/s12072-021-10258-8
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DOI: https://doi.org/10.1007/s12072-021-10258-8