Abstract
In the criteria presented by Japan Society for the Study of Obesity, the visceral fat accumulated in non-obese adults (BMI<25) is not shown. The aim of this study was to examine the individual body shape and body composition in non-obese adult males with visceral fat accumulation, and to analyze the relationship between them and the visceral fat area (VFA) evaluated by the abdominal CT. Body composition was measured by the dual energy X-ray absorptiometry. The results were as follows: In 40-59 yr. Group, 1) VFA correlated significantly with waist circumference and fat mass of upper limbs and trunk. The waist circumference border to the visceral fat accumulation (VFA=100 cm2) calculated by linear regression was 81 cm. 2) In the comparative study from three groups (BMI<25) (Y: 23-38 yr., VFA<100 cm2, /A: 40-59 yr., VFA<100 cm2, /B: 40-59 yr., VFA≧100 cm2), the B group was significantly higher than the other groups in fat mass of limbs and trunk, but there was no significant difference in muscle mass of these three groups. These findings suggest that the waist circumference and fat mass of upper limbs and trunk are important determinants of visceral fat accumulation in non-obese adult males with visceral fat accumulation, and that body shape in the visceral fat non-accumulated type does not change significantly at least until 59 yr.
