ICCBH2017 Poster Presentations (1) (209 abstracts)
Cardiorespiratory fitness, bone mineral density and hip geometry in young males: the PRO-BONE study
Esther Ubago-Guisado 1 , Dimitris Vlachopoulos 2 , Augusto César de Moraes 3, , Ana Torres-Costoso 5 , Kelly Wilkinson 2 , Brad Metcalf 2, , Javier Sánchez-Sánchez 1, , Leonor Gallardo 1 & Luis Gracia-Marco 2,
1IGOID Research Group, University of Castilla-La Mancha, Toledo, Spain; 2Children’s Health and Exercise Research Centre. Sport and Health Sciences, University of Exeter, Exeter, UK; 3Department of Preventive Medicine, School of Medicine of the University of Sao Paulo, São Paulo, Brazil; 4Growth, Exercise, Nutrition and Development Research Group, University of Zaragoza, Zaragoza, Spain; 5School of Nursing and Physiotherapy, University of Castilla La Mancha, Toledo, Spain; 6University of Exeter Medical School, Exeter, UK; 7European University, School of Sport Sciences, Madrid, Spain.
Objective: The main aim was to evaluate associations between cardiorespiratory fitness and bone outcomes, including hip geometry estimates in young males.
Methods: One hundred twenty one males (13.1±0.1 years) were included: 41 swimmers, 37 footballers, 29 cyclists and 14 non-athletes. Lean mass, areal bone mineral density (aBMD) and hip structural estimates were measured using dual-energy X-ray absorptiometry. Relationships of physical fitness test (20 m shuttle run test) with bone outcomes were analysed using three regression models: Model 1, adjusted by age and stature; Model 2, model 1+vigorous physical activity (VPA); Model 3, model 2+lean mass. Bonferroni correction was applied and only values of P<0.006 were considered statistically significant.
Results: performance in 20 m shuttle run test (except for narrow neck width) was positively associated with all bone outcomes in models 1 and 2 (P<0.006). Interestingly, all significant associations but the one at lumbar spine and femoral neck aBMD (P=0.097 and 0.008, respectively) remained significant after adding lean mass as a covariate (model 3).
Conclusion: Most of the associations found between cardiorespiratory fitness and bone outcomes in young males do not seem to be a function of neither VPA nor lean mass.
Funding sources: The research leading to these results has received funding from the European Union Seventh Framework Programme ([FP7/2007-2013] under grant agreement n°. PCIG13-GA-2013-618496.
Disclosure: The authors declared no competing interests.
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