29 research outputs found
Recommended from our members
Greater maintenance of bone mineral content in male than female athletes, and in sprinting and jumping than endurance athletes: a longitudinal study of bone strength in elite masters athletes
Summary: We investigated longitudinal changes in tibia bone strength in master power (jumping and sprinting) and endurance (distance) athletes of both sexes. Bone mass but not crossâsectional moment of inertia was better maintained in power than endurance athletes over time, particularly in men and independent of changes in performance.
Objective: Assessment of effects of sex and athletic discipline (lower limb power events e.g. sprint running and jumping versus endurance running events) on longitudinal changes in bone strength in masters athletes.
Methods: We examined tibia and fibula bone properties at distal (4% distalâproximal tibia length) and proximal (66% length) sites using peripheral quantitative computed tomography (pQCT) in seventyâone track and field masters athletes (30 male, 41 female, age at baseline 57.0±12.2y) in a longitudinal cohort study that included at least two testing sessions over a mean period of 4.2±3.1y. Effects of time, as well as time*sex and time*discipline interactions on bone parameters and calf muscle crossâsectional area (CSA) were examined.
Results: Effects of time were sex and disciplineâdependent, even following adjustment for enrolment age, sex, and changes in muscle CSA and athletic performance. Male sex and participation in power events was associated with better maintenance of tibia bone mineral content (BMC, an indicator of bone compressive strength) at 4% and 66% sites. In contrast, there was no strong evidence of sex or discipline effects on crossâsectional moment of inertia (CSMI, an indicator of bone bending and torsional strength â P > 0.3 for interactions). Similar sex and disciplineâspecific changes were also observed in the fibula.
Conclusions: Results suggest that male athletes and those participating in lower limb powerâbased rather than enduranceâbased disciplines have better maintenance of bone compressive but not bending and torsional strength