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Erschienen in: European Journal of Applied Physiology 7/2014

01.07.2014 | Original Article

Odd-impact loading results in increased cortical area and moments of inertia in collegiate athletes

verfasst von: Lee Weidauer, Maggie Minett, Charles Negus, Teresa Binkley, Matt Vukovich, Howard Wey, Bonny Specker

Erschienen in: European Journal of Applied Physiology | Ausgabe 7/2014

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Abstract

Purpose

The purpose of this study was to investigate tibial changes in volumetric bone mineral density and geometry that take place in athletes from pre- to post-season.

Methods

Female college athletes (n = 36) and ten controls recruited from the student population were included in the study. Participants had their left tibia scanned by pQCT at 4, 20, and 66 % of the overall length from the distal end before and after their competitive seasons. Subjects were divided into four groups: non-athlete (controls, n = 10), moderate-impact (cross-country runners, n = 13), high-impact (volleyball and basketball, n = 11), and odd-impact (soccer, n = 12).

Results

Anterior–posterior and medial–lateral diameter increased at the 4 % site in control subjects. In the moderate-impact group, medial–lateral moment of inertia (MOI) increased by 1.2 ± 1.8 (mean ± SD) percent at the 20 % site. In high-impact group, anterior–posterior MOI increased by 1.6 ± 2.0 percent at the 66 % site. In odd-impact group, cortical area (1.4 ± 2.3 %) and cortical thickness (1.8 ± 2.8 %) increased at the 20 % site increased, as did the polar MOI (1.8 ± 2.2 %) at the 66 % site.

Conclusions

Load-specific changes resulting in improved measures of bone strength take place in athletes during a competitive season. These changes may result in improved resistance to fractures and stress fractures.
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Metadaten
Titel
Odd-impact loading results in increased cortical area and moments of inertia in collegiate athletes
verfasst von
Lee Weidauer
Maggie Minett
Charles Negus
Teresa Binkley
Matt Vukovich
Howard Wey
Bonny Specker
Publikationsdatum
01.07.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
European Journal of Applied Physiology / Ausgabe 7/2014
Print ISSN: 1439-6319
Elektronische ISSN: 1439-6327
DOI
https://doi.org/10.1007/s00421-014-2870-5

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