|(Department of PE，Xi'an Institute of Post and Telecommunication，Xi'an 710061，China)
Abstract: Objective Observe the influences of non-load sports on metabolism of the bone caused by being short of estrogen in ovariectomy rats. Methods: Forty grown female rats were divided randomly four groups, each group for 10, Comparison group,osteoporosis group,sport group 1sport group 2.Swimming for 30 minutes and 6 times a week, put two comparison groups in the water and keep them from moving for 30 minutes; finish the experiment after 12 weeks. Results: Estrogen contents of osteoporosis group in the blood of the rats make a distinct fall and sport groups make no obvious effect on to increase the content of estrogen. Mensuration intensity of the bone show that compared to osteoporosis group the intensity of bone, of those two sport treatment groups have the hoist direction and sport group 1 is higher than group 2.Compared to comparison group and each sport group,osteoporosis group has the following difference the width of small girder of bone decrease.Conclusion: non-load sport treatment delay the rate of the lost of bone quantity caused by being short of estrogen and improve the tensity of the bone, prevent the bone form absorbing, sport only can make some catabatic effect on the osteoporosis.
Key words: estrogen; osteoporosis; sports