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Osteoporosis International

, Volume 19, Issue 7, pp 1011–1018 | Cite as

Trabecular bone microarchitecture in female collegiate gymnasts

  • C. M. ModleskyEmail author
  • S. Majumdar
  • G. A. Dudley
Original Article

Abstract

Summary

Using high-resolution magnetic resonance imaging, we observed more developed trabecular bone microarchitecture in the proximal tibia of female collegiate gymnasts vs. matched controls. This suggests that high-load physical activity may have a positive effect on the trabecular microarchitecture in weight-bearing bone.

Introduction

Participation in physical activities that overload the skeleton, such as artistic gymnastics, is associated with increased areal bone mineral density (aBMD); however, the status of trabecular microarchitecture in the weight-bearing bone of gymnasts is unknown.

Methods

Eight female collegiate artistic gymnasts and eight controls matched for age, height, body mass, gender and race were recruited for the study. Apparent trabecular bone volume to total volume (appBV/TV), trabecular number (appTb.N), thickness (appTb.Th) and trabecular separation (appTb.Sp) were determined using high resolution magnetic resonance imaging. Areal bone mineral density, bone mineral content (BMC) and bone area in the proximal tibia were determined using dual-energy X-ray absorptiometry. Group differences were determined using t-tests. The magnitude of group differences was expressed using Cohen’s d (d).

Results

Gymnasts had higher appBV/TV (13.6%, d = 1.22) and appTb.N (8.4%, d = 1.45), and lower appTb.Sp (13.7%, d = 1.33) than controls (p < 0.05). Gymnasts had higher aBMD and BMC in the proximal tibia, although the differences were smaller in magnitude (d = 0.75 and 0.74, respectively) and not statistically significant (p > 0.05).

Conclusion

The findings suggest that high-load physical activity, such as performed during gymnastics training, may enhance the trabecular microarchitecture of weight-bearing bone.

Keywords

Exercise Gymnastics Magnetic resonance imaging Mechanical loading Physical activity 

Notes

Acknowledgements

We thank the subjects for their participation. The study was funded by the National Institutes of Health (HD40323) and the Center for Research Development in the College of Health Sciences at the University of Delaware.

Conflicts of interest

None.

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Copyright information

© International Osteoporosis Foundation and National Osteoporosis Foundation 2007

Authors and Affiliations

  1. 1.Department of Health, Nutrition and Exercise SciencesUniversity of DelawareNewarkUSA
  2. 2.Magnetic Resonance Science Center, Department of RadiologyUniversity of California, San FranciscoSan FranciscoUSA
  3. 3.Department of KinesiologyUniversity of GeorgiaAthensUSA

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