Abstract
Effects of excess intakes of calories and proteins are investigated by school boys in dormitories of colleges (18-19 of age) and of middle schools (13-16 of age). By taking 10-20% excess calories and 10-23g from the control, increase in the body weight and the girth of the chest were ascertained, while growth in the length and the muscle strength were not affected. Daily increase in body weight by 100 Cal. excess per day was about 10g among middle school boys, while 13g in college students. The retention of protein was 23-34% of body weight increase in college students, while 9-19% in middle school boys.