沖縄地域における老人健診による栄養水準評価

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  • An Evaluation of Nutritional Standards by the Health Examination for Aged in the Okinawan Community
  • オキナワ チイキ ニ オケル ロウジン ケンシン ニヨル エイヨウ スイジュン
  • 多変量解析による試み

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An evaluation of regional traits on nutritional standards of aged groups in the Okinawan community has been proceeded by the technique of principal component analysis. The data were collected at the time of periodical health examinations with the survey of nutritional intakes for these groups which were consisted of healthy 118 subjects including twenty-eight aging between 60 and 69, forty-one aging between 70 and 79, thirty-five aging between 80 and 99, and fourteen aging between 100 and 104.<br>Among these collected data, the biological variables which were most reliable and closely related to the manifestation of nutritional standards such as hemoglobin volume, total protein and albumin, serum cholesterol and neutral fat, furthermore, height, weight and systolic/diastolic blood pressures were selected. In addition, the data including caliculated total caloric intake, intakes of carbohydrate, fat, protein and sodium chloride which were obtained by the inquiry sheets and interview approaches have been selected. These fourteen variables of 118 subjects are processed together through the principal component analysis using Facom 230-35 computor with the standardized Fortran 7000 language program, and the results for eigin values, eigin vectors, factor loadings and value of components on each principal component are obtained.<br>Regarding the first principal component, the major positive factor loadings were existed on the variables of total caloric intake, intakes of protein and fat, body weight, thus represented as “Factor of Intake Amount”. Also “Factor of Blood Pressures” was conjectured for the second principal component with the major positive factor loadings of systolic/diastolic blood pressures and serum total protein and albumin. Regarding the third principal component, “Factor of Fat” was considered for the factor loadings of intakes of fat, sodium chloride and total cholesterol were positively prominent. For the fourth principal component, “Factor of Carbohydrate” was estimated due to the positive findings of factor loadings on blood pressures, intakes of total calories, carbohydrate and fat.<br>For the value of components (scores) of individual subjects on the dimensions between the first and second principal components, the negative values were existed in the most of advanced age group, therefore, thus indicated the characteristics of these nutritional standards with an advancement of ages summarized as the factor of intakes and blood pressures. Meanwhile, it was found that the total caloric intakes in the advanced age group is less than that of the 60 and 70 decades groups, however, the intake amounts of fat and carbohydrate were not comparatively decreased in that group, and these findings were in accord with the results of principal component analysis which is seemed to be represented the characteristics of nutritional standards of aged groups in the Okinawan community.<br>As a conclusion, although the individual disparity was observed, these analysed results were indicative of sustaining tendency of comprehensive metabolic phases due to suppressed caloric intakes with relatively extended intakes of fat or carbohydrate proportions in the advanced age group, however, these tendency is thought to be concerned in the compensative effort to their health and longevity.

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