In sprint start, the rear leg produces greater initial force, but what occurs earlier?

In sprint start, the rear leg produces greater initial force, but what occurs earlier?

• A. Lifts off
• B. Keeps contact longer
• C. Bends more
• D. Slows down

Answer: (A)

The main idea is that the rear leg’s stronger initial drive speeds up the transition from block stance to forward motion. Because that leg is pushing with greater impulse, the body moves forward and upward more quickly, so the rear foot leaves the block earlier than the other events in the start sequence. In other words, lifting off the block happens sooner due to the larger initial force. Keeping contact longer would delay the transition, bending more or slowing down don’t specifically explain the timing of the early lift-off.

The main idea is that the rear leg’s stronger initial drive speeds up the transition from block stance to forward motion. Because that leg is pushing with greater impulse, the body moves forward and upward more quickly, so the rear foot leaves the block earlier than the other events in the start sequence. In other words, lifting off the block happens sooner due to the larger initial force. Keeping contact longer would delay the transition, bending more or slowing down don’t specifically explain the timing of the early lift-off.