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Original articles  SPORT INJURIES AND REHABILITATION 

The Journal of Sports Medicine and Physical Fitness 2008 September;48(3):352-9

Copyright © 2008 EDIZIONI MINERVA MEDICA

language: English

The effect of a water exercise program on bone density of postmenopausal women

Rotstein A. 1, Harush M. 1, Vaisman N. 2

1 Department of Life Sciences, Zinman College Wingate Institute, Netanya, Israel 2 Unit of Clinical Nutrition, Tel-Aviv Sourasky Medical Center Tel-Aviv, Israel


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Aim. The aim of the present study was to examine the effect of a seven months program of water exercise, on bone mineral density (BMD) in postmenopausal women.
Methods. Thirty-five postmenopausal women trained for seven months for three one-hour sessions per week. DEXA test findings for vertebrae L2-L4 showed that although the time factor had a significant effect only on the bone mineral content (BMC), (4.61 P<0.05), the interaction of time group was found to be significant for each of the variables: BMD (9.25 P<0.01), BMC (7.99 P<0.01), z-score (5.35 P<0.05) and t-score (9.41 P<0.01).
Results. These interactions indicate a general trend towards maintenance or improvement of bone status in the experimental group and a trend towards declining bone status for the control group. DEXA test findings for femoral neck density indicated no significant differences between the groups pre and post treatment. However a significant interaction was found for BMC (8.08 P<0.01) in the right leg indicating an increase trend in BMC in the experimental group and a trend towards decrease for the control group.
Conclusion. The findings of the present study support the hypothesis that it is possible to plan and execute a water exercise program that has a positive effect on bone status of post-menopausal women.

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