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Related Experiment Videos

Physical exercise as prophylaxis against involutional vertebral bone loss: a controlled trial.

B Krølner, B Toft, S Pors Nielsen

    Clinical Science (London, England : 1979)
    |May 1, 1983
    PubMed
    Summary

    Physical exercise significantly increased lumbar spine bone mineral content in postmenopausal women, potentially preventing osteoporosis. Forearm bone density showed no significant exercise-related changes.

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    Area of Science:

    • Gerontology
    • Bone Physiology
    • Exercise Science

    Background:

    • Osteoporosis is a significant health concern in postmenopausal women.
    • Involutional bone loss, particularly in the lumbar spine, is common with aging.
    • Previous Colles' fracture may indicate a predisposition to reduced bone density.

    Purpose of the Study:

    • To investigate the skeletal effects of a standardized physical training program.
    • To determine if exercise can mitigate bone loss in healthy postmenopausal women.
    • To assess the impact of exercise on bone mineral content in the lumbar spine and forearms.

    Main Methods:

    • A controlled trial with 31 healthy women (50-73 years) with prior Colles' fracture.
    • Participants were randomized into a physical exercise group or a control group.

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  • Bone mineral content was measured using dual-photon absorptiometry over 8 months.

    • Main Results:

    • The exercise group showed a 3.5% increase in lumbar spine bone mineral content.
    • The control group experienced a 2.7% decrease in lumbar spine bone mineral content.
    • Forearm bone mineral content decreased similarly in both groups, unaffected by exercise.

    Conclusions:

    • Physical exercise can inhibit or reverse age-related bone loss in the lumbar spine.
    • Regular physical activity may serve as a preventative measure against spinal osteoporosis.
    • Exercise does not appear to significantly impact bone density in the distal forearm in this population.