Physical performance in relation to age, sex, social class and sports activities in kindergarten and elementary school.

Physical performance of preschool children and elementary school pupils (N = 2309, age: 61 to 108 mo.) was related to characteristics of physical growth and cognitive performance and to ecological variables. Correlations between measures of physical growth and physical performance and between physical and cognitive performance were positive and significant. Measurements of physical fitness and body coordination increased across ages. Significant differences were found between boys and girls; however, boys exceeded on some items, girls on others. Children of higher socioeconomic status performed better than children of lower status and children who participated in sports outside school outperformed those who did not.