Growth status and estimated growth rate of young distance runners

International Journal of Sports Medicine
Joey C Eisenmann, R M Malina

Abstract

A mixed-longitudinal design was used to evaluate the growth status (size attained) and estimated growth rate of competitive young distance runners. Twenty-seven male and 27 female distance runners were enrolled in the study based on race performance times. Ages ranged from 8.0 to 15.1 years at initial visit. Twenty males and 16 females were followed at approximate annual intervals for 4 or 5 years. Stature (cm) and body mass (kg) were measured on each occasion and annual growth velocities were estimated. Stature and body mass were plotted relative to age- and sex-specific U.S. reference data, while estimated velocities of stature (cm/yr) and body mass (kg/yr) were plotted relative to age- and sex-specific percentiles from the Zurich Longitudinal Study. Differences in growth pattern between the runners and the reference values were compared statistically with a growth curve estimation regression model. Mean statures of male and female distance runners approximate the reference medians, while mean body masses are slightly below reference medians. Mean stature and body mass also maintain a constant position relative to the reference values in both sexes over time. Estimated velocities for stature and body mass are, on average, sim...Continue Reading

Citations

Oct 12, 2011·Sports Medicine·Robert M Malina
Sep 16, 2010·Annals of the New York Academy of Sciences·Neoklis A GeorgopoulosKostas B Markou
Feb 18, 2004·Journal of Endocrinological Investigation·A D Rogol

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