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Deficiencies of hormones rather than excesses of hormones disturb the normal process of growth and development.

Because not all muscle fibers are differentiated to a specific type of fiber, such as type I or type IIb, we know that infants’ early activities influence the proportion of fiber types, so we can prepare them to excel at certain kinds of activities in later life.

Until age 50 years, the loss of muscle mass is slight (approximately 10% of muscle mass).

Which of the following is the fastest growing in infancy and childhood?

A very young child’s early attempts at sidearm striking often resembles early attempts at throwing overhand.

Newborns move their eyes in the direction of a sound.

The developmental transition for arm action in the punt is (1) no use of the arms, (2) arm movement in opposition to the legs, (3) bilateral arm movement.

The size of the object that you want to grab is an example of an environmental constraint.

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.

After the age of 3 years, individuals tend to maintain their percentile position in comparison with group norms (i.e., if they are at the 40th percentile for height at age 3, they tend to remain around the 40th percentile throughout childhood and adolescence).