To use our website in an optimal way, please activate JavaScript in your Browser.

J Clin Densitom, 2021; (): , PMID: 34952789

Site-Specific Bone Differences and Energy Status in Male Competitive Runners and Road Cyclists.

Year: 2021

Chen Z, Sherk VD, Sharma-Ghimire P, Bemben MG, Bemben DA
Department of Kinesiology, California State University, San Bernardino, CA, USA. Electronic address:


The interaction between mechanical loading and energy availability on bone health in male endurance athletes merits further investigation. The purpose of this study was to compare bone status in male competitive runners and road cyclists and to investigate the influence of energy availability (EA) on bone mineral density (BMD). 18 competitive runners and 19 road cyclists (20-50 years) participated in this study. Areal BMD and body composition were assessed by dual energy x-ray absorptiometry. Volumetric bone variables at the 4% and 66% tibia sites were assessed by peripheral quantitative computed tomography. Energy availability (EA, 7-day dietary and exercise logs) and resting metabolic rate (RMR, open circuit spirometry) were measured as indicators of energy status. Bone loading history, calcium intake, and training history were assessed by questionnaires. After adjusting for age, runners had significantly greater (p < 0.05) areal BMD (femoral neck, left total hip), Z-scores (total body, hips sites), total bone mineral content and trabecular variables (bone mineral content, volumetric BMD, bone strength index) at tibia 4% site, and total volumetric BMD at tibia 66% site than the cyclists (p
GID: 5611; Last update: 10.01.2022