Abstract
The present study investigated changes in body composition in relation to growth to evaluate at what age Japanese children begin their pre-pubescent growth spurt. Children aged 9 were followed to age 10 (The age 9 group), and those aged 10 were followed to age 11 (The age 10 group). The increase in lean body mass per one-year increment of body height (Δ LBM/ ΔBH) in the age 10 boys group was significantly higher than that in the age 9 boys group. In both the age 9 and 10 boys groups, the high Body Mass Index (BMI) boys showed greater mean ΔLBM/ ΔBH than that for the normal BMI boys. Our results of accelerated Δ LBM/ ΔBH from age 10 to 11 in Japanese boys hypothesize that an increase in LBM demonstrates pre-pubescent growth.
This is a preview of subscription content, log in via an institution to check access.
References
Guo S, Roche AF, Houtkooper L. Fat-free mass in children and young adults predicted from bioelectric impedance and anthropometric variables. Am J Clin Nutr 1989;50:435–43.
Iwata K. Estimation of percent body fat by the bioelectrical impedance method and its correlation to adult disease risk factors in Japanese children. J Nihon Univ Med Ass 1993:52:279–85. (in Japanese)
Iwata K, Satou Y, Iwata F, Hara M, Fuchigami S, Kin H, et al. Assessment of body composition measured by bioelectrical impedance in children. Acta Pediatr Jpn 1993:35:369–72.
Oguni T, Nakayama A, Takaya R, Fukunaga Y, Tokuda M, Tanaka H, et al. Estimation of body composition by bioelectrical impedance analysis in obese children. J Jpn Pediatr Soc 1993:97:767–72. (in Japanese)
Hara M, Iwata F, Okada T, Harada K, Ohkuni M, Yamazaki K, et al. The study to establish a standard value for fat mass percentage of Japanese children assessed by bioelectrical impedance method. J Jpn Pediatr Soc 1995:99: 721–2. (in Japanese)
Sato H, Miyamoto S, Sasaki N, Niimi H. Sex and developmental variation of body composition assessed by bioelectrical impedance analysis in school children. J Jpn Pediatr Soc 1995:99:1405–11. (in Japanese)
Deurenberg P, Kooy K, Paling A, Withagen P. Assessment of body composition in 8-11 year old children by bioelectrical impedance. Eur J Clin Nutr 1996;43:623–9.
Sakamoto Y, Nisizawa M, Sato T, Ohno M, Ikeda Y. Measurement of body fat by bioelectrical impedance analysis. Health Med 1993:8:38–41. (in Japanese)
Brozek J, Grande F, Anderson JT, Keys A. Densitometric analysis of body composition: revision of some quantitative assumptions. Ann NY Acad Sci 1963;110:113–40.
Tanaka S, Matsuzaka A, Hattori K. Comparison between densitometry and two-electrode bioelectric impedance method with TBF-102 in young, middle-aged and old-age subjects. Proceedings of 3rd Meeting on Body Composition Analysis Study 1996;25–9. (in Japanese)
Sakamoto Y, Ikeda Y, Atshumi N, Nisizawa M. Assessment of body fat for Japanese children by bioelectrical impedance analysis. J Jap Obese Soc 1994; suppl14:232–5. (in Japanese)
Sakamoto Y, Sato T, Aikei M, Ohno M, Ikeda Y. Assessment of body fat by bioelectrical impedance analysis. J Jap Obese Soc 1992; suppl12:279–80. (in Japanese)
Tokumaru H, Seino Y. Physical growth at adolescence. J Jpn Med Assoc l996;115:l50l-5. (in Japanese)
Hergenroeder AC, Klish WJ. Body composition in adolescent athletes. Pediatr Clin North Am 1990:37:1057–83.
Takada H, Washino K, Harrell JS, Nagaoka T, Iwata H. Factors related to change of serum lipids with growth in children. Jap J of Appl Physiol 1996:26:119–26. (in Japanese)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Washino, K., Takada, H. & Iwata, H. The accelerated increase in lean body mass of pre-pubescent Japanese boys at 10 to 11 years of age. Environ Health Prev Med 3, 102–105 (1998). https://doi.org/10.1007/BF02931792
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02931792