NUTR 2050 Lecture Notes - Lecture 17: Lean Body Mass, Pubic Hair, Linear Function
26 Feb 2018
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Document Summary
Adolescence: early adolescence (11 to 14, middle adolescence (15 to 17, late adolescence (18 to 21, crosses over with early adulthood. Nutritional needs: substantial physical, emotional and cognitive maturation, rapid physical growth affect nutrient needs, strong desire for independence: can influence food choices. Body composition changes in females: peak weight gain follows linear growth spurt by 3 to 6 months, increase in body fat, decrease in lean body mass from 80% to 74% of body weight. Females experience ____% increase in body fat during puberty: 40, 50, 100, 120% Body fat levels in females: low <20%, moderate: 28%, high/obese: >35, 17% body fat is required for menarche to occur, 25% body fat needed to maintain normal menstrual cycles (ovulation) Body composition changes in males: peak weight gain at the same time as peak linear growth, peak weight gain, ~20lbs per year, body fat decreased to ~12%
