Resumen de Effect of Body Size on Treadmill Economy in Female Adolescents and Adults
Emily M. Johnson, Marco E. Cabrera, Colleen M. Grossner
Differences in oxygen uptake (VO2) relative to body mass between children and adults walking or running at a given speed might be the result of body size differences. In order to determine whether body size is the main factor affecting these differences in VO2 per kg, we investigated treadmill economy in 10 female adolescents (girls) and 10 women who were matched for body size. There were no significant differences between groups in anthropometrics, stride frequency, or VO2peak. Mean mass-specific VO2 was not significantly different during walking (girls: 12.3 ± 1.7 ml·kg¿1·min¿1; women: 10.9 ± 1.4 ml·kg¿1·min¿1) or running (girls: 30.5 ± 3.5 ml·kg¿1·min¿1; women: 29.0 ± 2.0 ml·kg¿1·min¿1). Body size appears to have the largest effect on oxygen cost differences usually seen between girls and women during locomotion
