Body Composition

• Female (puberty) :– Peak : 12,5 years (3-6 months)– ↑ ±18.3 lb (8.3 kg) per year.– 44% increase in lean body mass – 120% increase in body fat during puberty – ↑ ± 2.5 lb (1.14 kg) of body fat mass each year

• Male – Peak : weight gain ~ linear growth ~muscle mass

accumulation.– ↑ ± 20 lb (9 kg) per year– Body fat decreases ± 12% by the end of puberty

Tanner Stagers

Physiological Changes during Puberty

Psychosocial Process

11 to 14 years

15 to 17 years

18 to 21 years