The relationship between physical activity and bone during adolescence differs according to sex and biological maturity

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Title The relationship between physical activity and bone during adolescence differs according to sex and biological maturity
Author Weeks, Benjamin Kurt; Beck, Belinda Ruth
Journal Name Journal of Osteoporosis
Year Published 2010
Place of publication United States
Publisher Sage - Hindawi Access to Research
Abstract This study examines the relationships between bone mass, physical activity, and maturational status in healthy adolescent boys and girls. Methods. Ninety-nine early high-school (Year 9) students were recruited. Physical activity and other lifestyle habits were recorded via questionnaire. Anthropometrics, muscle power, calcaneal broadband ultrasound attenuation (BUA), bone mineral content (BMC), and lean tissue mass were measured. Maturity was determined by Tanner stage and estimated age of peak height velocity (APHV). Results. Boys had greater APHV, weight, height, muscle power, and dietary calcium than girls (P < .05). Boys exhibited greater femoral neck BMC and trochanteric BMC while girls had higher BUA and spine BMAD (P < .05). Physical activity and vertical jump predicted BMADand BUAmost strongly for boys whereas years from APHV were the strongest predictor for girls. Conclusion. Sex-specific relationships exist between physical activity, maturity and bone mass during adolescence.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.4061/2010/546593
Copyright Statement Copyright remains with the authors 2010]. The attached file is posted here with permission of the copyright owners for your personal use only. No further distribution permitted.For information about this journal please refer to the journal's website. The online version of this work is licensed under a Creative Commons License, available at http://creativecommons.org/licenses/by-nc-sa/2.1/au/
Volume 2010
Page from 1
Page to 9
ISSN 2042-0064
Date Accessioned 2010-11-02
Date Available 2010-12-07T07:32:34Z
Language en_AU
Research Centre Griffith Health Institute; Centre for Musculoskeletal Research
Faculty Griffith Health Faculty
Subject Exercise Physiology; Human Movement and Sports Science
URI http://hdl.handle.net/10072/35267
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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