BPK 303 Chapter Notes - Chapter 4: Adipose Tissue, Human Variability, Bw Group

• School: Simon Fraser University
• Department: Biomedical Physio & Kines
• Course: BPK 303
• Professor: richardward

Document Summary

Proportional growth from infancy to adolescence: proportional growth from infancy to adolescence. Timing of change in size, shape, comp causes phenotypic diff in male/female. Height: girls only slight shorter than boys before puberty but boys taller after (height change with body proportion) Coquitlam growth study(cogro) measure 6-18yr old boy. >mean value for weight (zweight): highest at birth then declines until 9yr (same for boys/girls) >after puberty: female wt increases(secondary fat) more than males male muscle increase but counteracted by ht increase. Tanner: there is regular order in which body dimensions accelerate. >leg length peak before trunk length before shoulder/chest breadth. >males have longer leg due to later puberty onset=longer growing time. >shown in zsittingheight-declines to 10 then increase in girls (trunk length increases) >as sit height decrease=leg length increase (boys have greater leg length) Z-ua length: after male puberty see longer arms. Z-foot length: foot matures earliest therefore sharp decline after 11.