Effect of Different Intensity Exercises on the Serum Levels of Calcium and Phosphate in Ovariectomized Rats

Object:To probe into the effect of combination of different intensity exercise and estrogen on the serum levels of calcium and phosphate.Methods:72 female SD rats which were 3 months old,were either sham-operated(SHAM) or ovariectomized(OVX) and assigned as follows:SHAM,OVX,OVX+ES(ovariectomy with estrogen administration),OVX+EX1,OVX+EX2,OVX+EX3,OVX+EX1+ES,OVX+EX2+ES,and OVX+EX3+ES.The serum levels of calcium and phosphate were tested after a period of 1h/day,5days/week for 8weeks treadmill training with the speed of 8m/min(EX1)、18m/min(EX2) and 28m/min(EX3) using the biochemical method.Results:Compared with Sham,the serum levels of calcium in groups of OVX and three individual exercises decreased(P0.05) while there has no significant differences within groups.The changes of phosphate had no significances(P0.05).Compared with OVX,the serum levels of calcium in groups of OVX+ES and three combination groups increased(P0.05),also there has no significant differences within 4 groups.Conclusion:It has no significant response of serum calcium to exercise in rats with or without estrogen administration.