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Influence of maturation on anthropometry and body composition in Japanese junior high school students

BACKGROUND: The purpose of this study was to examine maturity-related differences in anthropometry and body composition in Japanese youth within a single year. METHODS: Two hundred and ten Japanese youth aged from 13 to 13.99 years participated in this study. Their maturity status was assessed using...

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Autores principales: Fukunaga, Yuko, Takai, Yohei, Yoshimoto, Takaya, Fujita, Eiji, Yamamoto, Masayoshi, Kanehisa, Hiroaki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3608247/
https://www.ncbi.nlm.nih.gov/pubmed/23497570
http://dx.doi.org/10.1186/1880-6805-32-5
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author Fukunaga, Yuko
Takai, Yohei
Yoshimoto, Takaya
Fujita, Eiji
Yamamoto, Masayoshi
Kanehisa, Hiroaki
author_facet Fukunaga, Yuko
Takai, Yohei
Yoshimoto, Takaya
Fujita, Eiji
Yamamoto, Masayoshi
Kanehisa, Hiroaki
author_sort Fukunaga, Yuko
collection PubMed
description BACKGROUND: The purpose of this study was to examine maturity-related differences in anthropometry and body composition in Japanese youth within a single year. METHODS: Two hundred and ten Japanese youth aged from 13 to 13.99 years participated in this study. Their maturity status was assessed using a self-assessment of stage of pubic hair development. Bioelectrical impedance analysis was used to estimate percent body fat and lean body mass (LBM). Muscle thickness of the anterior thigh, posterior lower leg and rectus abdominis muscles were measured by ultrasound. RESULTS: For boys, height, body weight, and LBM in less mature groups were lower than that in more mature groups. The maturity-related differences were still significant after adjusting for chronological age. On the other hand, muscle thickness values in the lower extremity and abdomen differed among the groups at different stages of pubic hair development, whereas there was no maturity-related difference in the relative values corrected by LBM, except for those thickness values measured at the abdomen. For girls, only the muscle thickness at the anterior thigh and muscle thickness relative to LBM(1/3) at the posterior lower leg was significantly affected by maturity status, but significant maturity-related difference was not found after adjusting for chronological age. CONCLUSIONS: At least for Japanese boys and girls aged 13 years, maturity status affected body size in boys, but not in girls, and the influence of maturation on the muscularity of the lower extremity and trunk muscles is less in both sexes.
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spelling pubmed-36082472013-03-27 Influence of maturation on anthropometry and body composition in Japanese junior high school students Fukunaga, Yuko Takai, Yohei Yoshimoto, Takaya Fujita, Eiji Yamamoto, Masayoshi Kanehisa, Hiroaki J Physiol Anthropol Original Article BACKGROUND: The purpose of this study was to examine maturity-related differences in anthropometry and body composition in Japanese youth within a single year. METHODS: Two hundred and ten Japanese youth aged from 13 to 13.99 years participated in this study. Their maturity status was assessed using a self-assessment of stage of pubic hair development. Bioelectrical impedance analysis was used to estimate percent body fat and lean body mass (LBM). Muscle thickness of the anterior thigh, posterior lower leg and rectus abdominis muscles were measured by ultrasound. RESULTS: For boys, height, body weight, and LBM in less mature groups were lower than that in more mature groups. The maturity-related differences were still significant after adjusting for chronological age. On the other hand, muscle thickness values in the lower extremity and abdomen differed among the groups at different stages of pubic hair development, whereas there was no maturity-related difference in the relative values corrected by LBM, except for those thickness values measured at the abdomen. For girls, only the muscle thickness at the anterior thigh and muscle thickness relative to LBM(1/3) at the posterior lower leg was significantly affected by maturity status, but significant maturity-related difference was not found after adjusting for chronological age. CONCLUSIONS: At least for Japanese boys and girls aged 13 years, maturity status affected body size in boys, but not in girls, and the influence of maturation on the muscularity of the lower extremity and trunk muscles is less in both sexes. BioMed Central 2013-03-12 /pmc/articles/PMC3608247/ /pubmed/23497570 http://dx.doi.org/10.1186/1880-6805-32-5 Text en Copyright ©2013 Fukunaga et al.; licensee BioMed Central Ltd. http://creativecommons.org/licenses/by/2.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Original Article
Fukunaga, Yuko
Takai, Yohei
Yoshimoto, Takaya
Fujita, Eiji
Yamamoto, Masayoshi
Kanehisa, Hiroaki
Influence of maturation on anthropometry and body composition in Japanese junior high school students
title Influence of maturation on anthropometry and body composition in Japanese junior high school students
title_full Influence of maturation on anthropometry and body composition in Japanese junior high school students
title_fullStr Influence of maturation on anthropometry and body composition in Japanese junior high school students
title_full_unstemmed Influence of maturation on anthropometry and body composition in Japanese junior high school students
title_short Influence of maturation on anthropometry and body composition in Japanese junior high school students
title_sort influence of maturation on anthropometry and body composition in japanese junior high school students
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3608247/
https://www.ncbi.nlm.nih.gov/pubmed/23497570
http://dx.doi.org/10.1186/1880-6805-32-5
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