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Jinhyun Kim 1 Article
Physical Activity in Adolescence Has a Positive Effect on Bone Mineral Density in Young Men
Jinhyun Kim, Moonki Jung, Yeon-pyo Hong, Jung-Duck Park, Byung-Sun Choi
J Prev Med Public Health. 2013;46(2):89-95.   Published online March 28, 2013
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AbstractAbstract PDF

Little is yet known about the determinants of bone mineral density (BMD) in young adults. Thus, in this study, we aimed to determine the factors that have an impact on BMD in young men.


Questionnaires were sent out to 111 male medical students. Information on age, socio-economic status, medical history, lifestyle, physical activity during adolescence, school club participation, current physical activity, and dietary intake were collected by the survey. Height, weight, percent body fat and muscle mass were estimated by bioelectrical impedance, and BMD was obtained using calcaneal quantitative ultrasound. Using the Poisson regression model, prevalence ratios (PRs) were used to estimate the degree of association between risk factors and osteopenia.


The height and current physical activity showed a correlation to the Osteoporosis Index. Among the categorized variables, past physical activity during adolescence (p=0.002) showed a positive effect on the bone mineral content. In the multivariate model, past physical activity (≥1 time/wk) had a protective effect on osteopenia (PR, 0.37; 95% confidence interval [CI], 0.18 to 0.75) and present physical activity (1000 metabolic equivalent of task-min/wk) decreased the risk of osteopenia (PR, 0.64; 95% CI, 0.44 to 0.91).


Past physical activity during adolescence is as important as physical activity in the present for BMD in young men.



Citations to this article as recorded by  
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  • Comparison of Musculoskeletal Characteristics and Bone Mineral Density Related Factors between Male and Female University Students
    Seung-Hye Choi, Haeyoung Lee, MiJeong Park, Seungmi Park
    Journal of muscle and joint health.2013; 20(3): 161.     CrossRef

JPMPH : Journal of Preventive Medicine and Public Health