So their bones are dealing with an increase in weight load and a difference in the biomechanics of movement.
他们的骨骼所要负载的重量增加了，因此从生物力学的角度上来说，他们的步态会发生改变。
2
This paper makes a thorough study in the traditional theory about swing movement structure in terms of biomechanics. It advances some new points of view which are for teaching and training reference.