Informace o publikaci

Prediction of maturity offset and age at peak height velocity in a longitudinal series of boys and girls

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MALINA Robert M. KOZIEŁ Sławomir M. KRÁLÍK Miroslav CHRZANOWSKA Maria SUDER Agnieszka

Rok publikování 2020
Druh Článek v odborném periodiku
Časopis / Zdroj American Journal of Human Biology
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://onlinelibrary.wiley.com/doi/10.1002/ajhb.23551
Doi http://dx.doi.org/10.1002/ajhb.23551
Klíčová slova predicted maturity offset; peak height maturity; longitudinal study; puberty; human growth; growth models
Popis Background Predicted maturity offset, defined as time before peak height velocity (PHV) is increasingly used as an indicator of maturity status in studies of physical activity, fitness, and sport. Objective To validate maturity offset prediction equations in longitudinal samples of boys and girls. Methods The original and modified maturity offset prediction equations were applied to serial data for 266 boys and 147 girls from the Cracow Growth Study. Actual age at PHV for each youngster was estimated with the SITAR protocol. In addition to maturity offset, the difference between CA at prediction and maturity offset provided an estimate of predicted age at PHV. Results Predicted maturity offset and age at PHV increased, on average, with CA at prediction. Variation in predictions was reduced compared to that in observed ages at offset and at PHV, and was more apparent with the modified equations. Relatively few predicted ages at PHV approximated observed age at PHV in early and late maturing youth of both sexes; predictions were later than observed among the former, and earlier than observed among the latter. Conclusion Predicted maturity offset and ages at PHV with the original and modified equations increase with CA at prediction, have reduced variation, and have major limitations with early and late maturing boys and girls.
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