Age and Physical Development
Chronological Age: Is age that is measured in years.
Skeletal Age: Age indicated by the maturity of the skeletal system. It is the degree of maturity of the skeletal system. This can be affected by nutrition, diet, disease and bone injuries.
Developmental Age: Age expressed in one's ability to perform certain tasks.
Mesomorphs: Are people who often mature early as children. They are stockier, heavily muscled and broader.
Ectomorphs: These people tend to mature later in life. They have thinner bodies, narrow hips, longer legs and arms.
Endomorphs: Are people who tend to have more fatty tissue ad have thicker body parts.