252 BLOOD PRESSURE RELATED RISKS IN JAPANESE BOYS REVEALED BY HEALTH EXAMINATION FOR FOOD EDUCATION

Abstract

Objective: We conducted the health examination for food education (HEFE) for junior and senior high school students since 2007, and investigated the relationships between the risk of blood pressure (BP) and the result of HEFE in high school boys. Methods: Our HEFE for measuring anthropological indices, checking BP in sitting position after 5 minutes at rest by using an automated BP system, sampling blood, asking questionnaires about birth weight and dietary custom, and collecting 24-hour urine (24U) samples was carried out in 152 healthy Japanese school boys aged 16–18. Fasting blood samples were analyzed for total cholesterol, high density lipoprotein cholesterol (HDL), triglycerides (TG), glucose (Gu) and homocysteine (Hcy). Results: The prevalence of increased BP (≥130/85mmHg), overweight (BMI≥25 kg/m2), dyslipidemia (TG ≥150 mg/dl and/or HDL< 40 mg/dl) and hyperglycosemia (Gu≥100 mg/dl) were 15.8%, 6.6%, 12.6% and 39.1%, respectively. Salt intakes (g/day) estimated by 24U was 9.3 ± 3.5 and 24U Na/K was 4.2 ± 1.5. The results of HEFE were compared in increases BP and normal BP groups. The former showed significantly greater abdominal circumference (p< 0.0001), greater heart rate (p< 0.01), higher Hcy (p< 0.05), lower birth weight (p< 0.05) and greater salt intake (p< 0.05) than the letter. There were significant correlations of Hcy with both systolic and diastolic BP. Conclusion: Even in young school boys higher BP was proven to be related with risks such as abdominal obesity, higher Hcy, higher salt intake and lower birth weight.