KMID : 0869220180220010001
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Journal of Korean Geriatric Psychiatry 2018 Volume.22 No. 1 p.1 ~ p.6
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Relationship between Body Composition and Cognitive Function : Using Bioelectrical Impedance Analysis
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Roh Ji-Hyun
Kim Hyun Lee Kang-Joon
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Abstract
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Objective£ºBody composition is measured using bioelectrical impedance analysis (BIA), and correlation between the result of BIA and cognitive function is analyzed.
Methods£ºA total of 118 elderly (46 male, 72 female) were recruited. They were divided into three groups; normal (n=33), mild cognitive impairment (n=42), and Alzheimer¡¯s dementia (n=43) according to the diagnostic criteria. Skeletal muscle mass, body fat mass, and fat-free mass were measured using a BIA device, and were converted to the ratio of body weight. All participants underwent Korean version of Mini-Mental State Examination (MMSE-K).
Results£ºIn pearson correlation analysis, skeletal muscle percentage (SMP) and fat-free mass percentage (FFMP) were positively correlated with MMSE-K score (r=0.309, p=0.001; r=0.245, p=0.008), and body fat percentage was negatively correlated (r= -0.258, p=0.005). In multiple regression analysis, SMP (¥â=2.012, t=4.457, p£¼0.001) and FFMP (¥â=-1.733, t=-3.838, p£¼0.001) were selected as the best predictors of changes in MMSE-K score (R2=0.198).
Conclusion£ºReduced skeletal muscle and increased body fat correlate with decreased cognitive function, suggesting the need for prevention of frailty and early diagnosis of cognitive impairment.
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KEYWORD
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Alzheimer¡¯s dementia, Bioelectrical impedance analysis, Body composition, Sarcopenia
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