Different impact of running, soccer and rugby trainings on diaphyseal tibia and fibula architecture, with different dependence on cortical tissue mineralization

LUSCHER, SERGIO; PISANI, LEONARDO; PILOT, NICOLÁS; RITTWEGER, JÖRN; IRELAND, ALEX; FERRETTI, JOSE LUIS; CAPOZZA, RICARDO F.; COINTRY, GUSTAVO ROBERTO

Evento Virtual

Congreso; ASBMR 2020 Annual Meeting; 2020

American Society for Bone and Mineral Research

Some differences between pQCT indicators of cortical tibia and fibula design between athletes trained in disciplines involving a different use of the foot with respect to untrained controls have been observed. This study aims to analyze these differences and assess their possible dependence on cortical tissue deformability (a relevant feature to mechanostat control of bone design). To that purpose, we compared the pQCT-assessed, anterior-posterior and lateral bending moments of inertia (xMI, yMI) in 18 serial scans taken at every 5% of the dominant-tibia length of 13 long-distance runners (LDR, in whom the foot is not trained in rotation/eversion), 28 soccer players and 19 rugbiers (S,R, in which foot rotation/eversion are intensively solicited), and 15 untrained controls (C). We correlated both MI values with the cortical vBMD (vCtD) at every site as a surrogate of bone tissue stiffness.Tibia MIs were significantly but moderately larger in R, S and LDR that in C, in that decreasing order (p