Final answer:
Backside mechanics during sprinting include motions such as moving the back of the lower legs up and back, moving the thigh down and back, and twisting the thigh inward.
Step-by-step explanation:
During sprinting, backside mechanics includes several motions that are crucial for generating power and propelling the sprinter forward.
- The motion of moving the back of the lower legs up and back toward the buttocks, as when kneeling: This motion helps in flexing the knee and generating force to push off the ground.
- The motion of moving the thigh down and back: This motion helps in extending the hip and generating force to propel the body forward.
- The motion of twisting the thigh (and lower leg) inward: This motion helps in generating torque and power during the running stride.
By coordinating these backside mechanics, sprinters are able to optimize their power and speed during sprinting.