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Ann Geriatr Med Res  <  Volume 22(4); 2018 <  Articles

Ann Geriatr Med Res 2018; 22(4): 167-175  https://doi.org/10.4235/agmr.18.0046
Protein Intake Recommendation for Korean Older Adults to Prevent Sarcopenia: Expert Consensus by the Korean Geriatric Society and the Korean Nutrition Society
Hee-Won Jung1, Sun-Wook Kim2, Il-Young Kim3, Jae-Young Lim4,5, Hyoung-Su Park6, Wook Song7, Hyung Joon Yoo8, Hak-
Chul Jang2,5, Kirang Kim9, Yongsoon Park10, Yoon Jung Park11, Soo Jin Yang12, Hae-Jeung Lee13, Chang Won Won14 ; for the
Sarcopenia-Frailty Study Group of the Korean Geriatric Society and the Korean Nutrition Society
1Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea
2Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
3Lee Gil Ya Cancer and Diabetes Institute, Gachon University School of Medicine, Incheon, Korea
4Rehabilitation Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
5Seoul National University College of Medicine, Seoul, Korea
6Sarcopenia Research Center, Maeil Innovation Center, Maeil Dairies Co., Ltd., Pyeongtaek, Korea
7Institute of Sport Science, Institute on Aging, Seoul National University, Seoul, Korea
8Endocrine Division, Department of Internal Medicine, CM Hospital, Seoul, Korea
9Department of Food Science and Nutrition, Dankook University, Seoul, Korea
10Department of Food and Nutrition, Hanyang University, Seoul, Korea
11Department of Nutritional Science and Food Management, Ewha Womans University, Seoul, Korea
12Department of Food and Nutrition, Seoul Women's University, Seoul, Korea
13Department of Food and Nutrition, Gachon University, Seongnam, Korea
14Department of Family Medicine, Kyung Hee University Medical Center, Seoul, Korea
Correspondence to: Chang Won Won, MD, PhD, https://orcid.org/0000-0002-6429-4461
Department of Family Medicine, Kyung Hee University Medical Center, 23 Kyunghee dae-ro, Dongdaemungu, Seoul 02447, Korea
Tel: +82-2-958-8691, Fax: +82-2-958-8699
E-mail: chunwon62@naver.com
Received: November 22, 2018; Accepted: December 10, 2018; Published online: December 31, 2018.
© The Korea Geriatrics Society. All rights reserved.

This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Sarcopenia, a common clinical syndrome in older adults, is defined as decreased muscle mass, strength, and physical performance. Since sarcopenia is associated with the incidence of functional decline, falls, and even mortality in older adults, researchers and health care providers have been keen to accumulate clinical evidence to advocate the screening and prevention of sarcopenia progression in older adults. The factors that may accelerate the loss of muscle mass and function include chronic diseases, inactivity, and deficiency in appropriate nutritional support. Among these, nutritional support is considered an initial step to delay the progression of muscle wasting and improve physical performance in community-dwelling older adults. However, a nationwide study suggested that most Korean older adults do not consume sufficient dietary protein to maintain their muscle mass. Furthermore, considering age-associated anabolic resistance to dietary protein, higher protein intake should be emphasized in older adults than in younger people. To develop a dietary protein recommendation for older adults in Korea, we reviewed the relevant literature, including interventional studies from Korea. From these, we recommend that older adults consume at least 1.2 g of protein per kg of body weight per day (g/ kg/day) to delay the progression of muscle wasting. The amount we recommend (1.2 g/ kg/day) is 31.4% higher than the previously suggested recommended daily allowance (i.e., 0.91 g/kg/day) for the general population of Korea. Also, evidence to date suggests that the combination of exercise and nutritional support may enhance the beneficial effects of protein intake in older adults in Korea. We found that the current studies are insufficient to build population-based guidelines for older adults, and we call for further researches in Korea.
Keywords: Protein, Nutrition, Sarcopenia, Older people


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