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Related Experiment Videos

Exercise and bone mineral density in men: a meta-analysis.

G A Kelley1, K S Kelley, Z V Tran

  • 1Department of Kinesiology and Physical Education, Northern Illinois University, DeKalb, Illinois 60115, USA. gkelley@niu.edu

Journal of Applied Physiology (Bethesda, Md. : 1985)
|May 8, 2000
PubMed
Summary

Site-specific exercise may improve bone mineral density (BMD) in older men, particularly at the femur and lumbar spine. However, more research is needed to confirm these findings due to small effect sizes and study limitations.

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Area of Science:

  • Exercise Physiology
  • Gerontology
  • Bone Health

Background:

  • Bone mineral density (BMD) is crucial for skeletal health, and its decline is a concern, especially in aging populations.
  • Exercise is a potential non-pharmacological intervention to influence BMD.
  • Understanding the specific effects of exercise on BMD in men is important for public health recommendations.

Purpose of the Study:

  • To conduct a meta-analysis examining the impact of exercise on bone mineral density (BMD) in men.
  • To identify specific exercise types and anatomical sites that show significant effects on BMD.

Main Methods:

  • A meta-analytic approach was employed, synthesizing data from 8 studies.
  • Included 26 effect sizes (ES) from 225 male subjects.

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  • Analyzed BMD changes at specific skeletal sites loaded by exercise.

    • Main Results:

    • Site-specific exercise demonstrated a statistically significant increase in BMD of approximately 2.6% compared to controls.
    • Significant BMD improvements were observed at the femur, lumbar spine, and os calcis.
    • Older men (>31 years) showed statistically significant improvements, unlike younger men.

    Conclusions:

    • Site-specific exercise may offer benefits for maintaining and improving BMD at key skeletal sites in older men.
    • The observed BMD changes were small, and limitations in study quality and data pool necessitate caution.
    • Further high-quality research is required to establish definitive conclusions on exercise's role in men's BMD.