What are two biomechanical analyses that changed sport technique?

• A. Fosbury Flop and Flip Turn
• B. Jump Shot Spin
• C. Flip Turn
• D. Fosbury Flop

Answer: (A)

Biomechanical analyses focus on how forces, motion, and body position influence performance, revealing tweaks that let athletes move more efficiently or clear greater heights. The Fosbury Flop exemplifies this: researchers and coaches studied how the body's center of mass moves relative to the bar during a jump, showing that going over the bar headfirst and backward allows the jumpers to clear higher heights because the center of mass stays lower at the critical moment of clearance. This insight transformed high jump technique away from earlier styles like the straddle and made record heights achievable.

The flip turn in swimming is another classic example. By analyzing how a swimmer negotiates the wall—rotation, entry, and push-off—coaches discovered techniques that reduce drag and maximize speed off the wall, leading to a streamlined turn that speeds up the next lap. Together, these two biomechanical-driven changes illustrate how understanding body motion and forces can shift sport technique in meaningful ways. The other options miss that pairing or involve less-established biomechanical shifts.