PEDS302 Chapter Notes - Chapter 16: Dynamometer, Soft Tissue, Cerebral Palsy
23 Feb 2015
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Document Summary
Muscle mass and strength: muscle mass growth follows sigmoid pattern, force a muscle can exert depends in part on its cross-sectional area, neurological factors are also involved, strength does not always change in parallel with muscle size. Developmental changes in strength: strength increases as children grow, boys and girls are similar in strength levels until age 13 years. Growth & development: peak strength increases follow peak muscle increase, among same-size children of different ages, more mature children are stronger, neural factors likely exert influence (including improved motor unit activation with maturation) Isometric strength: rate of change (velocity) similar before puberty. Importance of having a control group for exercise study. Growth & development: can consider this as typical development, i. e. this happens alongside typical growth. Strength in middle and older adulthood: strength generally declines gradually after the 30s, muscle mass declines in the average older adult.
