Long-term exercise using weighted vests prevents hip bone loss in postmenopausal women.

BACKGROUND Bone mineral density (BMD) is a primary risk factor for hip fracture. We studied the effect of long-term weighted vest plus jumping exercise on hip BMD in postmenopausal women as a strategy for reducing hip fracture risk. METHODS Eighteen postmenopausal women (age = 64.1 +/- 1.6 years at baseline, 69.9 +/- 1.6 years at post-testing) who had participated in a 9-month exercise intervention volunteered for the long-term trial. Nine of the original group engaged in weighted vest plus jumping exercise three times per week for 32 weeks of the year over a period of 5 years. Nine of the original controls were active but not enrolled in the exercise program. BMD of the proximal femur was assessed by dual energy x-ray absorptiometry at baseline and after 5 years. RESULTS At baseline, groups were similar for age, weight, height, years past menopause, and BMD of the femoral neck, trochanter, and total hip. At follow-up, differences in BMD at all regions of the hip were higher in exercisers than controls. For exercisers, changes in BMD were + 1.54% +/- 2.37%, -0.24% +/- 1.02%, and -0.82% +/- 1.04% (means + SE) at the femoral neck, trochanter, and total hip, respectively; controls decreased at all sites (-4.43% +/- 0.93%. 3.43% +/- 1.09%, and -3.80% +/- 1.03%, respectively). CONCLUSIONS A 5-year program of weighted vest plus jumping exercise maintains hip BMD by preventing significant bone loss in older postmenopausal women. Furthermore, this particular program appears to promote long-term adherence and compliance, as evidenced by the commitment of the exercisers for more than 5 years.

[1]  W. Hayes,et al.  Trochanteric bone mineral density is associated with type of hip fracture in the elderly , 1994, Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research.

[2]  G Block,et al.  A data-based approach to diet questionnaire design and testing. , 1986, American journal of epidemiology.

[3]  E. Bassey,et al.  Pre‐ and Postmenopausal Women Have Different Bone Mineral Density Responses to the Same High‐Impact Exercise , 1998, Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research.

[4]  H. Wahner,et al.  Updated Data on Proximal Femur Bone Mineral Levels of US Adults , 1998, Osteoporosis International.

[5]  R. Cumming,et al.  Quality of life related to fear of falling and hip fracture in older women: a time trade off study. , 2000, BMJ.

[6]  E. Bassey,et al.  Weight-bearing exercise and ground reaction forces: a 12-month randomized controlled trial of effects on bone mineral density in healthy postmenopausal women. , 1995, Bone.

[7]  M. Fiatarone,et al.  Effects of High-Intensity Strength Training on Multiple Risk Factors for Osteoporotic Fractures: A Randomized Controlled Trial , 1994 .

[8]  S. Cummings,et al.  Hormone therapy to prevent disease and prolong life in postmenopausal women , 1992, Annals of internal medicine.

[9]  R. Prince,et al.  Exercise effects on bone mass in postmenopausal women are site‐specific and load‐dependent , 1996, Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research.

[10]  J. Shaw,et al.  Weighted vest exercise improves indices of fall risk in older women. , 1998, The journals of gerontology. Series A, Biological sciences and medical sciences.