(P31-061-23) Effect of Soybean Milk Intake on Liver Function and Cholesterols in Japanese Sumo Wrestling

Objectives: Soy milk is inferior to cow's milk and chicken eggs in protein nutritional value, superior in cholesterol control. Because sumo competitions are weight-neutral, differences in physical requirements affect the determination of winners and losers. Increasing body weight leads to improved competitiveness. However, many previous studies are dominated by anthropometric studies and lack sufficient blood test data for body composition and health status. Therefore, the purpose of this study was to investigate of the effect of consuming soy milk in place of a breakfast that is not eaten over a 3-month period on Liver function and Cholesterols in Sumo students.

Methods: Sixteen top level male Sumo wrestling player as volunteer who belong to college Sumo association in Japan (mean ± SD; BMI 39.7 ± 3.3kg/m2) participated in this study. They are well known to eat rice cooking quite much more, high-carbohydrate diet traditionally. For three months, 200 ml of commercially processed soy milk products (KIKKOMAN SOYFOODS COMPANY) was consumed every morning during three month. It was performed examination of blood test before and after Soy milk intake intervention. Two blood tests were done. This study was approved by the Committee designated by Jissen Women’s University (H2022-13). Blood tests included total cholesterol, CHOL(mg/dL), albumin(g/dL), γ-GTP(IU/L), ALT(iU/L) and blood protein(g/dL).

Results: After 3 months of soymilk consumption, there was no significant different in body weight. The test results before and after the soy milk intake intervention were as follows ( mean ± SD; control, soy milk): CHOL(184.0±29.3, 181.7±37.4 ), albumin(4.8±0.3, 4.8±0.3), γ-GTP(55.7±36.4, 46.5±33.6), ALT(69.2±50.3, 55.5±36.9) and protein(7.4±0.3, 7.6±0.4).There were no significant different between before and after soy milk in blood tests. However, Average values of γ-GTP and ALT, indicators of liver function, decreased.

Conclusions: All subjects with a BMI of 35 or higher were in the normal range except for ALT. It was not change in albumin before and after the intervention experiment. Therefore, the soy milk intervention experiment was performed with no impact on diet and nutritional status. Active consumption of soy milk affected liver function and reduced cholesterol in some subjects

Funding Sources: No