Clinical and Experimental Pediatrics

The Korean Pediatric Society (대한소아청소년과학회)
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The novel expression method of pediatric body composition : fat mass index and fat-free mass index

소아 체성분의 새로운 표현법: 체지방량지수(fat mass index)와 제지방량지수(fat-free mass index)

  • Cho, Young Gyu (Department of Family Medicine, College of Medicine, Inje University, Seoul Paik Hospital) ;
  • Kang, Jae Heon (Department of Family Medicine, College of Medicine, Inje University, Seoul Paik Hospital) ;
  • Song, Hye Ryoung (Department of Family Medicine, College of Medicine, Inje University, Seoul Paik Hospital) ;
  • Kim, Kyung A (Obesity Research Institute of Inje University) ;
  • Song, Ji Hyun (Division of Metabolic Diseases, Center for Biomedical Sciences National Institute of Health) ;
  • Jung, Myeong Ho (Division of Metabolic Diseases, Center for Biomedical Sciences National Institute of Health)
  • 조영규 (인제대학교 서울백병원 가정의학과) ;
  • 강재헌 (인제대학교 서울백병원 가정의학과) ;
  • 송혜령 (인제대학교 서울백병원 가정의학과) ;
  • 김경아 (인제대학교 다이어트 연구소) ;
  • 송지현 (국립보건연구원 생명의과학센터 대사영양질환팀) ;
  • 정명호 (국립보건연구원 생명의과학센터 대사영양질환팀)
  • Received : 2007.04.12
  • Accepted : 2007.06.12
  • Published : 2007.07.15
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Abstract

Purpose : This study was conducted to assess the usefulness of fat-free mass index (FFMI) and fat mass index (FMI) as novel expression methods of body composition in children. Methods : A total of 466 Second grade students-248 boys and 218 girls- from all elementary schools the Gwacheon City underwent anthropometric measures including bioelectrical impedance analysis (BIA) and biochemical tests. The correlation coefficients between obesity indices, including FMI and FFMI, and metabolic risk factors, were assessed. Metabolic risk factors of children with increased FMI were compared with those of children with normal FMI. We compared FMI and FFMI percentile distribution between this study's subjects and the subjects of the Fukuoka body composition study. Results : FMI was lower and FFMI was higher in this study's subjects compared to the subjects of the Fukuoka body composition study. FMI was correlated with other obesity indices and several metabolic risk factors. Metabolic risk was higher in children with increased FMI than in children with normal FMI. Conclusion : FMI and FFMI were useful indicators in comparing difference of body composition among children that had different body size and growth. High FMI was related to increase of metabolic risk in children.

목 적 : 본 연구는 소아에서 새로운 체성분 표시법인 체지방량지수(fat mass index, FMI)와 제지방량지수(fat-free mass index, FFMI)의 유용성을 평가하기 위해 수행되었다. 방 법 : 2006년 과천시 초등학교 2학년 학생 466명(남아 : 248명, 여아 : 218명)을 대상으로 체성분 분석을 비롯한 신체계측과 혈액검사를 시행하였다. 신체계측 변수들 간의 상관계수와 비만지표들과 대사성 위험인자들의 상관계수를 구하였고, 체지방량지수에 의해 비만으로 진단된 소아와 정상 체지방량지수인 소아의 대사성 위험인자를 비교하였다. 본 연구 대상자의 체지방량지수 및 제지방량지수 백분위수 분포와 Nakao 등이 제시한 일본 소아의 체지방량지수와 제지방량지수 백분위수 분포를 비교하였다. 결 과 : 본 연구대상자들은 후쿠오카 지역의 소아에 비해 체지방량지수는 작고 제지방량지수는 컸다. 체지방량지수는 기존의 비만지표 및 여러 대사성 위험인자와 상관관계가 있었으며, 체지방량지수가 증가함에 따라 대사 질환의 위험도가 증가되었다. 결 론 : 과천지역의 초등학교 2학년 소아에서 새로운 체성분 표현방법인 체지방량지수와 제지방량지수는 체격과 성장이 다른 소아의 체성분의 차이를 비교하는데 유용하였으며, 체지방량지수의 증가는 대사질환 위험의 증가와 관련이 있었다. 체지방량지수와 제지방량지수를 임상에서 널리 사용되기 위해서는 국내 소아의 성별 연령별 체지방량지수와 제지방량지수 정상 표준치에 대한 연구가 필요하다.

Keywords

Acknowledgement

Supported by : 질병관리본부

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