Physical activity declines during adolescence, but the underlying reasons remain unknown.We prospectively followed 1213 black girls and 1166 white girls enrolled in the National Heart, Lung, and Bl ...

International Journal of Obesity - Aerobic fitness, physiologic difficulty and physical activity in Black and White women. Skip to main content. ... (Model #2900, Yoma Linda, CA, USA).

And like many other doctors of the era in the South, he was also a wealthy plantation owner who tried to use science to prove that differences between black people and white people went beyond ...