For probing into the influences of the loaded leg extension exercise on the middle-aged and the elderly s muscle strength of lower extremities and balance ability,this paper took 50 Nanjing community citizens aged from 56 to 72 as research objects,carried on 12 weeks loaded leg extension exercise,determined and compared the changes of lower extremities before and after the exercises.

Objective To investigate the effects of lumbosacral hot compress and massage in reducing the labor pain and shortening the birth process in the first stage of labor with coxa and knee bending position in the expulsive stage.