Kinesiology 4437A/B Lecture Notes - Lecture 6: Hypothalamus, Sexual Maturity, Acid Erosion
20 Dec 2017
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Male: before puberty, little difference b/n sexes, females (9-13yrs, males (10-14yrs) Bmd: bone mineral accumulation in adolescence = bone loss during entire adult life, peak gains ~ 1yr after age of peak linear growth so earlier in females. Earlier growth spurt in females = increased weight in early teen yrs in women over men: by age 15, boys wt. exceeds girls. Increase q angle at knee increased chance of acl injuries. Average body fat composition: women = 26% men = 14% Estrogen: lower lean body mass, less muscle mass, body fat stores in hips and thighs. Women: smaller heart size = reduced stroke volume, smaller thorax = less lung capacity. Men: fewer red blood cells, reduced hemoglobin level per red cell = lowered oxygen carrying capacity. Metabolism: women - lower basal metabolic rate (rate of conversion of food to energy at rest)
