Luciano G. Galvão, Fábio C. Karasiak, Victor J. S. Conceição, Diego Augusto Santos Silva, Humberto M. Carvalho
{"title":"巴西圣卡塔琳娜Florianópolis学童青春期生长变异性建模：贝叶斯分析","authors":"Luciano G. Galvão, Fábio C. Karasiak, Victor J. S. Conceição, Diego Augusto Santos Silva, Humberto M. Carvalho","doi":"10.1002/ajhb.70129","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Objective</h3>\n \n <p>This study aimed to describe inter-individual variation in growth velocity during puberty among Brazilian children, considering maturity status to better understand differences in the timing and intensity of growth spurts.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>Longitudinal stature data from 398 Brazilian children (197 girls, 201 boys) aged 6–19 years, collected annually from 1997 to 2010, were analyzed. Growth and velocity curves were estimated using the SITAR model within a Bayesian framework. Maturity groups were classified based on the standard deviation of the estimated age at peak growth velocity, categorizing participants as early, average, or late maturers.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>The mean age at peak growth velocity was 11.30 years for girls and 13.55 years for boys. Mean peak velocities were 8.38 and 9.52 cm/year, respectively. Pubertal takeoff occurred at 8.41 years for girls and 11.19 years for boys, with mean velocities of 5.85 and 5.43 cm/year. Early maturers exhibited earlier onset and higher growth velocities, while late maturers showed delayed growth for both sexes.</p>\n </section>\n \n <section>\n \n <h3> Conclusions</h3>\n \n <p>Considerable variability in growth velocity patterns during puberty was observed. Compared to Northern Hemisphere populations, Brazilian children experienced earlier and more intense pubertal growth spurts. These findings highlight the importance of accounting for maturational timing in physical education planning, training load management, and pediatric growth assessment.</p>\n </section>\n </div>","PeriodicalId":50809,"journal":{"name":"American Journal of Human Biology","volume":"37 9","pages":""},"PeriodicalIF":1.7000,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajhb.70129","citationCount":"0","resultStr":"{\"title\":\"Modeling Pubertal Growth Variability in Schoolchildren From Florianópolis, Santa Catarina, Brazil: A Bayesian Analysis\",\"authors\":\"Luciano G. Galvão, Fábio C. Karasiak, Victor J. S. Conceição, Diego Augusto Santos Silva, Humberto M. Carvalho\",\"doi\":\"10.1002/ajhb.70129\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n \\n <section>\\n \\n <h3> Objective</h3>\\n \\n <p>This study aimed to describe inter-individual variation in growth velocity during puberty among Brazilian children, considering maturity status to better understand differences in the timing and intensity of growth spurts.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Methods</h3>\\n \\n <p>Longitudinal stature data from 398 Brazilian children (197 girls, 201 boys) aged 6–19 years, collected annually from 1997 to 2010, were analyzed. Growth and velocity curves were estimated using the SITAR model within a Bayesian framework. Maturity groups were classified based on the standard deviation of the estimated age at peak growth velocity, categorizing participants as early, average, or late maturers.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Results</h3>\\n \\n <p>The mean age at peak growth velocity was 11.30 years for girls and 13.55 years for boys. Mean peak velocities were 8.38 and 9.52 cm/year, respectively. Pubertal takeoff occurred at 8.41 years for girls and 11.19 years for boys, with mean velocities of 5.85 and 5.43 cm/year. Early maturers exhibited earlier onset and higher growth velocities, while late maturers showed delayed growth for both sexes.</p>\\n </section>\\n \\n <section>\\n \\n <h3> Conclusions</h3>\\n \\n <p>Considerable variability in growth velocity patterns during puberty was observed. Compared to Northern Hemisphere populations, Brazilian children experienced earlier and more intense pubertal growth spurts. 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Modeling Pubertal Growth Variability in Schoolchildren From Florianópolis, Santa Catarina, Brazil: A Bayesian Analysis
Objective
This study aimed to describe inter-individual variation in growth velocity during puberty among Brazilian children, considering maturity status to better understand differences in the timing and intensity of growth spurts.
Methods
Longitudinal stature data from 398 Brazilian children (197 girls, 201 boys) aged 6–19 years, collected annually from 1997 to 2010, were analyzed. Growth and velocity curves were estimated using the SITAR model within a Bayesian framework. Maturity groups were classified based on the standard deviation of the estimated age at peak growth velocity, categorizing participants as early, average, or late maturers.
Results
The mean age at peak growth velocity was 11.30 years for girls and 13.55 years for boys. Mean peak velocities were 8.38 and 9.52 cm/year, respectively. Pubertal takeoff occurred at 8.41 years for girls and 11.19 years for boys, with mean velocities of 5.85 and 5.43 cm/year. Early maturers exhibited earlier onset and higher growth velocities, while late maturers showed delayed growth for both sexes.
Conclusions
Considerable variability in growth velocity patterns during puberty was observed. Compared to Northern Hemisphere populations, Brazilian children experienced earlier and more intense pubertal growth spurts. These findings highlight the importance of accounting for maturational timing in physical education planning, training load management, and pediatric growth assessment.
期刊介绍：
The American Journal of Human Biology is the Official Journal of the Human Biology Association.
The American Journal of Human Biology is a bimonthly, peer-reviewed, internationally circulated journal that publishes reports of original research, theoretical articles and timely reviews, and brief communications in the interdisciplinary field of human biology. As the official journal of the Human Biology Association, the Journal also publishes abstracts of research presented at its annual scientific meeting and book reviews relevant to the field.
The Journal seeks scholarly manuscripts that address all aspects of human biology, health, and disease, particularly those that stress comparative, developmental, ecological, or evolutionary perspectives. The transdisciplinary areas covered in the Journal include, but are not limited to, epidemiology, genetic variation, population biology and demography, physiology, anatomy, nutrition, growth and aging, physical performance, physical activity and fitness, ecology, and evolution, along with their interactions. The Journal publishes basic, applied, and methodologically oriented research from all areas, including measurement, analytical techniques and strategies, and computer applications in human biology.
Like many other biologically oriented disciplines, the field of human biology has undergone considerable growth and diversification in recent years, and the expansion of the aims and scope of the Journal is a reflection of this growth and membership diversification.
The Journal is committed to prompt review, and priority publication is given to manuscripts with novel or timely findings, and to manuscripts of unusual interest.
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