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Ann Geriatr Med Res > Volume 19(4); 2015 > Article
Journal of the Korean Geriatrics Society 2015;19(4):235-240.
DOI: https://doi.org/10.4235/jkgs.2015.19.4.235    Published online December 31, 2015.
The Prevalence of Sarcopenia in Korean Hospitalized Elderly
Won Seok Heo, Hyun Wook Baik, Ju Hee Kang, Ju Sang Park, Sang Jong Park, Eun Jeong Jang, Sang Woon Park, Sang Jung Kim, Byung Sung Koh, Gi Tark Noh, Kyung Han Lee, Jung Ah Choi
<sup>1</sup>Division of Clinical Nutrition and Metabolism, Department of Internal Medicine, Bundang Jesaeng Hospital, Seongnam,<br> <sup>2</sup>Department of Food and Nutrition, Suwon Women’s University, Suwon,<br> <sup>3</sup>Division of Gastroenterology, Department of Internal Medicine, Bundang Jesaeng Hospital, Seongnam, Korea
Sarcopenia is a syndrome characterized by the progressive loss of skeletal muscle mass and muscle strength. Although data exist on the prevalence of sarcopenia among the community-dwelling elderly, there is no systematic research on hospitalized elderly patients in Korea, in accordance with the newly developed criteria.
A cross-sectional study was conducted at the Daejin Medical Center, Bundang Jesaeng Hospital, Korea, from May 2013 to March 2015. In this study, we evaluated the levels of hemoglobin, total cholesterol, serum albumin, serum prealbumin, and serum zinc. Handgrip strength was measured with a hand grip dynamometer (FT-7110). Furthermore, the skeletal muscle mass was measured by bioelectrical impedance analysis (BIA). Sarcopenia was defined by skeletal muscle mass as measured with BIA, according to the Asian Working Group for Sarcopenia.
Of the hospitalized elderly subjects, 40 (46.5%) had a definite diagnosis of sarcopenia and 46 (53.5%) had no sarcopenia. The prevalence of sarcopenia of the subjects was higher in males than females (males, 46.9% vs. females, 46.3%). The correlation analysis showed that the score of skeletal muscle index (SMI) was negatively correlated with age; whereas, it was positively correlated with the BMI, body weight, and serum prealbumin level.
The results of the study showed that sarcopenia was associated with several factors, including age, BMI, serum prealbumin level, among the study subjects. Sarcopenia can be used as a sensitive predictive marker for prognosis of the hospitalized elderly.
Key Words: Sarcopenia, Elderly, Hospitalization

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