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Korean Journal of Epidemiology 2006;28(2): 182-188.
Correlation Between Muscle Amounts and Grasp Power in the Elderly People, Jejudo.
Hojun Lee, Minsung Park, Yeoju Go, Yeong Ja Yang, Jong Myon Bae
1Students of College of Medicine, Cheju National Unviersity,Jejudo, Korea.
2Department of Preventive Medicine, Cheju NationalUnviersity, Jejudo, Korea. jmbae@cheju.ac.kr
Abstract
OBJECTIVES:
This study was conducted to examine the relationships between muscle mass and hand strength in elderly people.
METHODS:
The study subjects were 659 volunteers aged older than 65 in Jejudo, south Korea. The anthropometric information such as weight, body mass index (BMI) and muscular mass was collected by the body composition analyzer. The hand strength was obtained by the digital grip dynamometer. The fasting blood sugar index called as potential diabetes mellitus (DM) was defined as the condition over 120 mg/dL of the blood sugar. The BMI was classified into under 23, 23-25 and over 25 to analyze the relationships of BMI and muscle mass, hand strength.
RESULTS:
The factors affecting muscle mass were sex (p<0.001), age (p<0.001) and BMI (p<0.001). The factors affecting hand strength were sex (p<0.001), age (p<0.001) and BMI (p=0.003). And there was a weak association between muscle mass and hand strength after controlling with the affected factors (r2=0.15, p<0.001).
CONCLUSIONS:
The hand strength is weekly correlated with the muscle mass. So we recommend to use digital grip dynamometer combining with other measurements for diagnosis the sarcopenia in epidemiologic study.
Keywords: Skeletal muscle; Hand strength; Correlation study; Aged group


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