Growth and physical performance of American Negro and white children. A comparative survey of differences in body size, proportions and composition, skeletal maturation, and various motor performances

Adults of different racial or ethnic groups vary in size and proportional measures, and one may assume that these differences become apparent early in the human growth cycle. Hence it is important to ascertain when during the growth period such differences become readily recognizable, and how they are related to rates of growth, growth gradients and biologic maturation.

Exercise as an influence upon growth. Review and critique of current concepts

The scarcity of sound insights into the long-term effects of physical exercise upon the growth of children is amazing. Most of our knowledge has been derived by extrapolation from animal studies and from observations of adults and nerve-damaged patients. Much more research is necessary to enable us to identify the effects of physical activity on the growing child and to determine which sports and exercises are most likely to establish desirable effects.