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Association between Grip Strength as Diagnostic Criteria of Sarcopenia and Health-Related Quality of Life in Korean Elderly
Korean J Sports Med 2018;36:15-23
Published online March 1, 2018;  https://doi.org/10.5763/kjsm.2018.36.1.15
© 2018 The Korean Society of Sports Medicine.

On Lee1, Yeon-Soo Kim1,2

1Department of Physical Education, College of Education, Seoul National University, Seoul, 2Institute of Sport Science, Seoul National University, Seoul, Korea
Correspondence to: Yeon-Soo Kim
Department of Physical Education, College of Education, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea
Tel: +82-2-889-1926, Fax: +82-2-886-7804, E-mail: kys0101@snu.ac.kr
Received October 24, 2017; Revised December 11, 2017; Accepted January 12, 2018.
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
Purpose: This study aimed to investigate the association between grip strength as diagnostic criteria of sarcopenia and health-related quality of life (HRQL) in Korean elderly.
Methods: Data were obtained through the 2014닋2015 Korea National Health and Nutrition Examination Survey (6th KNHANES), targeting a total of 3,096 elderlies (over 60 years old). Grip strength was measured and divided into four quartiles, and the lower quartile was used as the muscle strength criterion for sarcopenia. The EuroQol-5 Dimension (EQ-5D) questionnaire was used to measure HRQL and classified as poor HRQL when the EQ-5D index was less than 1. Complex sample design logistic regression was used to evaluate the odds ratio (OR) and 95% confidence interval (CI) of prevalence of poor HRQL associated with sarcopenia.
Results: When confounding factors are adjusted, the OR (95% CI) of prevalence of poor HRQL for male and female elderlies in the group with the highest strength, as compared to the group with the lowest strength were 0.605 (0.413닋0.893), and 0.406 (0.297닋0.590), respectively.
Conclusion: Muscle strength can be considered to be more effective in assessing the health status of the elderly compared to muscle mass. In particular, this is acceptable given the cost of measurement and the clarity as a health goal.
Keywords : Hand strength, Korea National Health and Nutrition Examination Survey, Quality of life, Sarcopenia
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