Motor Development > EXAM > Questions and Answers > California State University, Northridge KIN 477 Developmental Exam 2-3 (All)

Questions and Answers > California State University, Northridge KIN 477 Developmental Exam 2-3

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What percentage of muscle fibers are undifferentiated at birth? 15% 10% 25% 20% What percentage of strength is lost during the 50’s 25-30% 45% 40% 18-20% A loss of 1% of bone mass occurs e ... ach year, starting as early as the mid- _____________. 20s 50s 30s 40s About one-third of preadolescents begin their growth spurt within a year of the average age for their sex. True False By age 4, the brain is about 50% of its adult weight. True False Proximodistal is the direction of growth proceeding from the body toward the extremities. True False Between the ages of 20 and 50, adult women gain 36 pounds of fat. True False On average, the adolescent period lasts about 2-3 years. True False Peak height velocity and peak weight velocity occur at the same age in both boys and girls. True False Girls begin their adolescent growth spurt approximately 2 years before boys begin their adolescent growth spurt, on the average. True False Maturity can be accurately inferred from age and size. True False Due to different rates of relative growth, late maturers would have long trunks compared to the length of their legs. True False Body fat redistributes with aging, and both men and women typically have an increase in internal fat as they move through middle adulthood and into older adulthood. True False n the typical adult, fat weight increases from the 20s to age 50 and decreases thereafter. True False [Show More]

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