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Asian J Kinesiol > Volume 19(3); 2017 > Article
The Official Journal of the Korean Academy of Kinesiology 2017;19(3):61-70.
DOI: https://doi.org/10.15758/jkak.2017.19.3.61    Published online July 30, 2017.
Associations of Sarcopenia with Rheumatoid Arthritis and Osteoarthritis in Korean Adults: the Korea National Health and Nutrition Examination Survey 2008-2011.
Jeong-Gyo Yoon, Junghoon Kim, Yoon-Heyong Choi
Department of Preventive Medicine, Gachon University College of Medicine, Incheon, Korea
Correspondence:  Junghoon Kim, Department of Preventive Medicine, Gachon University College of Medicine, Incheon, Korea,
Email: Junghoonkim@gachon.ac.kr
Received: 27 June 2017   • Accepted: 20 July 2017
Abstract
PURPOSE
This study aimed to investigate the associations of sarcopenia with rheumatoid arthritis and osteoarthritis in the general population of Korean adults.
METHODS
We analyzed the data for 11,466 adults aged ≥40 years from the Korea National Health and Nutrition Examination Survey 2008-2011. Dual-energy X-ray absorptiometry was used to measure the skeletal muscle mass. Sarcopenia was defined when the appendicular skeletal muscle index was less than the sex-specific average minus the two standard deviations in the young reference group(age, 20-39 years). Survey logistic regression analysis was used to assess the association of sarcopenia with rheumatoid arthritis and osteoarthritis.
RESULTS
Sarcopenia status was dose-dependently associated with a higher risk of rheumatoid arthritis, after adjustment for potential confounders(p-trend=.002, odds ratio [OR], 2.14; 95% confidence interval [CI], 1.13, 4.05 in sarcopenia group vs. high muscle mass group). However, a higher risk of osteoarthritis was observed in pre-sarcopenia group compared with the high muscle mass group(OR, 1.45; 95% CI, 1.03, 2.05), but not in sarcopenia group.
CONCLUSIONS
We found that sarcopenia status was associated with rheumatoid arthritis, and pre-sarcopenia status was associated with osteoarthritis. Our findings suggest that maintaining a skeletal muscle could be beneficial in preventing musculoskeletal disorders, including rheumatoid arthritis and osteoarthritis.
Keywords: sarcopenia, skeletal muscle mass, rheumatoid arthritis, osteoarthritis, KNHANES


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