HLTH 331 Lecture Notes - Lecture 5: Vitamin B6, Dietary Reference Intake, Disordered Eating
8 Feb 2017
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Document Summary
Physical changes associated w/ sexual maturation begins between 9-12 years. Dris separate for 9-13 and 14-18 years. Organ systems develop and grow, change in body composition, puberty, growth rates and nutrient requirements of boys and girls diverse. Peak growth adolescent growth spurt (occurs later for males, but growth rate is higher/faster) Nutritional deficiencies = poor growth/delayed sexual maturation. Boys: gain fat and lbm; % body fat decreases. Girls: onset of menstruation = increase in fat storage, less lbm than boys. Large indv. variation in age at which growth/development occurs. Stage of maturation is better indicator of nutritional requirements than chronological age. Best indicators of adequate intake: satiety + growth that follows curve of the growth charts. Similar amdr to adults for cho, fat, pro but higher energy needs overall in comparison to adults. Energy requirements: (2200-3150kcals/day) boys > girls (2100-2400kcals/day) Boys + girls: 0. 8 g/kg/day but higher absolute intake for boys (because they are heavier)
