I FCS 101 Chapter 11 A Puberty The Biological Eruption The Adolescent Growth Spurt 1 Puberty Primary Sex Characteristics Secondary Sex Characteristics Asynchronous Growth d Sex Differences in Body Growth in Adolescence 2 Growth Spurts Boys 12 1 2 Girls 10 Proportions Boys Shoulders broaden with longer legs Girls Hips broaden c Muscle Fat Makeup Boys Gain more muscle and aerobic efficiency Girls Gain more fat Consequences of Timing of Puberty 3 a b c a b a Girls unpopular withdrawn low Early Maturing 1 confidence more deviant behavior negative body image 2 independent positive body image Boys popular confident b Girls Popular sociable school Late Maturing 1 leaders positive body image 2 attention seeking negative body image Boys Unpopular anxious B Health in Adolescence 1 Nutrition in Adolescence a Calorie intake needs to increase Female 1800 2400 Male 2200 3200 Poor food choices common Eating with family can help b c 2
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