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《Journal of Shandong Institute of Physical Education and Sports》 2007-03
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Biomechanic performance in rats with nerves cutted influenced by passive movement and electricity stimulation

LI Jun-han1,HUANG Lei2(1.Department of Sports and Fitness Health,Mianyang Teachers' College,Mianyang 621000,Sichuan,China;2.Dept.of Graduate,Chengdu Institute of Physical Education,Chengdu 610041,Sichuan,China)  
Objective:Through the experimental research,this paper discussed the preventional function of passive movement and electricity stimulation on rats with disuse osteoporosis.Methods:through cutting the sciatic nerve and femoral nerve of experimental rats,we made an animal model of disuse osteoporosis,and divided them into five groups.Those are the fake operation group,the nerve cutting group(NCG),nerve cutting with passive movement groups(PMG),nerve cutting with electricity stimulation group(ESG),and nerve cutting with passive movement and electricity stimulation(PMESG).Then we observed the change of the biomechanic criterions in all groups.Results: compared with the fake operation group,the elasticity modulus,the ultimate intensity,the structure rigidity,the biggest load and the energy absorption reduced significantly in all other groups(P0.05),the max strain value increased obviously(P0.05);compared with the nerve cutting group,the elasticity modulus,the ultimate intensity,the structure rigidity,the biggest load and the energy absorption increased significantly in all other groups(P0.05),the value of the max strain reduced obviously(P0.05)except the PMG group(P0.05).Conclusion:Cutting the nerve made the biomechanic performance of the thighbone in rats decrease,passive movement and electricity stimulation can prevent this change,so passive movement and electricity stimulation can prevent efficiently the disuse osteoporosis made by cutting nerve.If passive movement affected associated with electricity stimulation,it will be better.
【CateGory Index】: G804.2
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