Change with Age in Regression Construction of Fat Percentage for BMI in School-Age Children

スポンサーリンク

概要

• 論文の詳細を見る

• In this study, curvilinear regression was applied to the relationship between BMI and body fat percentage, and an analysis was done to see whether there are characteristic changes in that curvilinear regression from elementary to middle school. Then, by simultaneously investigating the changes with age in BMI and body fat percentage, the essential differences in BMI and body fat percentage were demonstrated. The subjects were 789 boys and girls (469 boys, 320 girls) aged 7.5 to 14.5 years from all parts of Japan who participated in regular sports activities. Body weight, total body water (TBW), soft lean mass (SLM), body fat percentage, and fat mass were measured with a body composition analyzer (Tanita BC-521 Inner Scan), using segmental bioelectrical impedance analysis & multi-frequency bioelectrical impedance analysis. Height was measured with a digital height measurer. Body mass index (BMI) was calculated as body weight (km) divided by the square of height (m). The results for the validity of regression polynomials of body fat percentage against BMI showed that, for both boys and girls, first-order polynomials were valid in all school years. With regard to changes with age in BMI and body fat percentage, the results showed a temporary drop at 9 years in the aging distance curve in boys, followed by an increasing trend. Peaks were seen in the velocity curve at 9.7 and 11.9 years, but the MPV was presumed to be at 11.9 years. Among girls, a decreasing trend was seen in the aging distance curve, which was opposite to the changes in the aging distance curve for body fat percentage.

• 2011-03-31

著者

• Mishima Takaaki

  Faculty Of Human Health Science Hachinohe University

• FUJII Katsunori

  Graduate School of Business Administration and Computer Science, Aichi Institute Technology

• WATANABE Eiji

  School of Commerce, Senshu University

• SEKI Kazuyoshi

  Faculty of Sports Sciences, Waseda University

• Fujii Katsunori

  Graduate School Of Business Administration And Computer Science Aichi Institute Technology

• Seki Kazuyoshi

  Faculty Of Sports Sciences Waseda University

• Watanabe Eiji

  School Of Commerce Senshu University

• Fujii Katsunori

  Graduate School Of Business Administration And Computer Science Aichi Institute Of Technology

関連論文

• Change with Age in Regression Construction of Fat Percentage for BMI in School-Age Children
• Age-related Changes of Body Composition Structure Based on Differences in Morphological Qualities of Japanese Preschool Children

スポンサーリンク