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Related Experiment Videos

Total body bone density in amenorrheic runners.

M Myerson1, B Gutin, M P Warren

  • 1Department of Nuclear Medicine, St. Luke's-Roosevelt Hospital Center, New York, New York.

Obstetrics and Gynecology
|June 11, 1992
PubMed
Summary

Athletic amenorrhea in runners may negatively impact bone health, particularly in the trunk and spine, despite the benefits of running exercise. Bone mineral density was lower in amenorrheic runners compared to eumenorrheic runners.

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Area of Science:

  • Exercise Physiology
  • Bone Metabolism
  • Women's Health

Background:

  • Athletic amenorrhea is a concern for female athletes, potentially affecting bone health.
  • Previous studies suggest running's bone benefits may not offset amenorrhea's negative effects.
  • Limited site measurements in prior research may have obscured regional bone density differences.

Purpose of the Study:

  • To investigate the effects of athletic amenorrhea on bone mineral content and density in runners.
  • To compare bone density in amenorrheic runners, eumenorrheic runners, and sedentary controls.
  • To examine regional bone density variations using dual-photon absorptiometry.

Main Methods:

  • Dual-photon absorptiometry used to measure bone mineral content and density.

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  • Study included amenorrheic runners (N=13), eumenorrheic runners (N=13), and sedentary controls (N=12).
  • Subjects were aged 21-35, with runners training ≥40 km/week for ≥3 years.

    • Main Results:

    • Amenorrheic runners showed lower total bone mineral content and density than eumenorrheic runners.
    • No significant differences in total bone density when adjusted for body weight.
    • Eumenorrheic subjects had greater trunk bone density than amenorrheic women; spine density was higher in eumenorrheics and controls compared to amenorrheics.

    Conclusions:

    • Athletic amenorrhea is associated with reduced bone mineral density in specific regions like the trunk and spine.
    • Running exercise may not fully compensate for bone loss associated with amenorrhea.
    • Further research is needed to understand the long-term skeletal implications for amenorrheic athletes.