抄録
The purpose of the study was to examine the interrelationship between habitual physical activity and dietary pattern in the white collar male workers. Subjects were 4，694 male workers ranging in age from 20 to 69 years old（mean age 40.3）, who participated in a questionnaire survey carried out by mail method in a mutual life insurance company in Japan.
The habitual physical activity was divided into two categories ; viz. walking or gymnastic status and habitual light sport. Usual intake for 15 food groups was assessed using a food frequency method（fifth categories）. A principal component analysis was conducted on the correlation matrix dietary frequency in each food group studied using the procedure of FACTORS. An analysis of general linear model （GLM） in SPSS was subsequently conducted using factor scores of the principal components revealed by the principal component analysis as dependent variables, with age and BMI as covariates, and walking or gymnastic status, habitual light sport, drinking status, smoking status, regularity of having breakfast, having dinner with family, living arrangement, occupation, and treatment for diseases（circulation or endocrine） as independent variables.
The major findings were as follows.
1）The first component had maximum positive factor loading from fish and shellfish, soybean products, vegetables, seaweeds, potatoes and fruits（an index of selecting plant food）. The second component had maximum positive factor loadings from meat, fats and oils（an index of animal food）. The third component had maximum positive loading from rice and miso soup, and opposed to bread（an index of food staple）. These components accounted for 48.3％ of the inter-individual variability.
2）Two habitual physical activities significantly associated with the first component. The results suggest that habitual physical activity affects the frequency of selecting plant food. The adjusted deviation from mean indicated that having no habitual physical activity tend to select plant food less frequently than having habitual physical activity. The results of this study suggest that habitual physical exercise is related to dietary pattern.
