article 2008 Assessment of the bone quality of black male athletes using calcaneal ultrasound: a cross-sectional study Emmanuel P Laabes, Dorothy J VanderJagt, Michael O Obadofin, Ayuba J Sendeht, Robert H Glew JournalNutrition & MetabolismDOI10.1186/1743-7075-5-13Study typecross-sectional studyPopulationblack male athletes View on DOI ↗