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Tibial cortical bone properties of preadolescents and their mothers in an urban area associated with lifestyle: A longitudinal study
Author(s) -
Inose Tomoko,
Takano Takehito,
Nakamura Keiko,
Kizuki Masashi,
Seino Kaoruko
Publication year - 2006
Publication title -
acta pædiatrica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 115
eISSN - 1651-2227
pISSN - 0803-5253
DOI - 10.1111/j.1651-2227.2006.tb02226.x
Subject(s) - medicine , context (archaeology) , longitudinal study , recreation , tibia , demography , pediatrics , environmental health , surgery , paleontology , pathology , sociology , political science , law , biology
Aim : A 12‐mo follow‐up observation was performed to evaluate the tibial cortical bone properties of preadolescent children and their mothers in a densely populated area of Tokyo in association with their lifestyle in the context of healthy bone development of urban children. Methods : Fifty‐four volunteer mother–child pairs were examined twice: once in the 1st grade of elementary school and once in the following year. Tibial cortical speed of sound (TCSOS) was measured by non‐invasive quantitative ultrasonometry. Nutritional intake and recreational activity were examined using a structured interview. Results : TCSOS of the children showed a positive association with intake of vegetables, including potatoes and fruits (1st grade, r =0.31, p < 0.05; 2nd grade, r =0.33, p < 0.05), and inversely correlated with indoor recreational activities (1st grade, r = − 0.28, p < 0.05). The z‐score of TCSOS of the mothers was correlated with intake of milk, dairy products and eggs ( r =0.35, p < 0.001). However, there were no statistically significant correlations in TCSOS between children and their mothers. Conclusion A 1‐y longitudinal study in urban children indicated the effects of specific types of food intake and recreational activities of children on tibial bone properties.