Abstract
Objectives
To discern the diagnostic accuracy between the updated diagnostic consensus of the Asian Working Group for Sarcopenia (AWGS) in 2019 (AWGS 2019) and the previous AWGS 2014 guidelines.
Design
A prospective population-based cohort study.
Setting and Participants
The study included 731 older community-dwelling adults aged ≥ 65 years who participated in face-to-face interviews and were followed up for 11-year mortality until 31 Mar 2022.
Measurements
We utilized a handgrip strength dynamometer to measure participants’ muscle strength, while their walking speed was determined by a timed 6-meter walk test at their usual pace. Additionally, muscle mass was measured using dual-energy X-ray absorptiometry scanning. Sarcopenia was defined as the presence of low muscle mass in combination with weakness and/or slowness both by AWGS 2014 and 2019 criteria.
Results
The present study followed 731 participants (mean age 73.4 ± 5.4 years, men predominant 52.8%) over a period of 11 years, yielding 5927 person-years and 159 deaths. Prevalence of sarcopenia defined by AWGS 2019 and 2014 criteria were 8.5% and 6.8%, respectively. Sarcopenia defined by AWGS 2019 (HR 1.62, 95% CI 1.04–2.54, p=0.034) but not AWGS 2014 was significantly associated with mortality in community-living older adults after adjusting for potential confounders such as age, sex, education, drinking, disease burden and serum level of testosterone. The study also found that the AWGS 2019 criteria had a better model fitness than AWGS 2014 criteria in predicting mortality.
Conclusion
AWGS 2019 criteria outperformed AWGS 2014 in identifying sarcopenia risk and predicting mortality. Screening for sarcopenia in older adults may improve health outcomes by identifying those at increased mortality risk.
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Acknowledgements
The authors express their gratitude to the staff from the ILAS Research Group for data gathering and to all the participants for their assistance.
Funding
The whole study was funded by the National Science and Technology Council (NSTC 112-2923-B-A49 -002 -MY2, and NSTC 111-2314-B-A49-048-MY2), National Health Research Institute (NHRI-11A1-CG-CO-01-2225-1), and Taipei Veterans General Hospital (111 VACE-001).
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All participants signed a written informed consent after full consented by research nurses. The institutional review board of the National Yang Ming University (YM103008) and Taipei Veterans General Hospital (2018-05-003B) approved the study protocol. The study design and executive procedures were carried out in accordance with the principles of the Declaration of Helsinki.
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Liang, CK., Peng, LN., Lin, MH. et al. Long-Term Mortality Risk in Older Adults with Sarcopenia: An 11-Year Prospective Cohort Study Comparing AWGS 2014 and AWGS 2019 Guidelines for Enhanced Clinical Utility and Accurate Risk Prediction. J Nutr Health Aging 27, 507–513 (2023). https://doi.org/10.1007/s12603-023-1940-y
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DOI: https://doi.org/10.1007/s12603-023-1940-y