Study - SWIMMING INCREASES BONE STRENGTH

Swimming increases bone strength: Study

ANI Thursday, July 31, 2003

Washington - Results of a new study prove swimming to be an excellent way of improving bone
strength. This is the first study to report the relative effects of weight- bearing and
non-weight-bearing exercises on bone mechanical properties.

Previous studies have shown physical activity with weight-bearing to improve bone density.
Swimming, being a non-weight-bearing exercise, was believed not to have equivalent beneficial
effect on bone density.

However, findings of a study on rats by a team from Taiwan led by T. H. Huang from the National
Taiwan University, Taiwan suggest that water sports could enhance the mechanical properties of bone
under specific conditions, and direct comparison of its effects with those of weight-bearing
exercise would be useful.

Their findings appear in the July 2003 edition of the Journal of Applied Physiology.

This experiment investigated the effects of exercise with or without weight bearing on the mineral
and mechanical properties of growing bone. Only the running rats exhibited a higher site-specific
bone density compared with the swimming and control groups. However, both running and swimming
resulted in increased long bone biomechanical properties.

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