The sprint start is described as an explosive push off with which limbs?

The sprint start is described as an explosive push off with which limbs?

• A. Front leg only
• B. Both legs
• C. Rear leg only
• D. Neither leg

Answer: (B)

Explosive propulsion at the sprint start comes from pushing off with both legs. From the starting position, the rear leg drives into a strong hip, knee, and ankle extension against the block, delivering a powerful initial impulse. As you explode upward and forward and the blocks release, the front leg pushes off the track with its own strong extension, contributing additional forward force and helping to transfer energy into forward momentum. The synergy of both legs, plus the coordinated arm drive and body angle, produces a larger horizontal impulse than using just one leg, setting up a faster, more stable start. Relying on a single leg would limit the total force and disrupt balance, reducing acceleration.

Explosive propulsion at the sprint start comes from pushing off with both legs. From the starting position, the rear leg drives into a strong hip, knee, and ankle extension against the block, delivering a powerful initial impulse. As you explode upward and forward and the blocks release, the front leg pushes off the track with its own strong extension, contributing additional forward force and helping to transfer energy into forward momentum. The synergy of both legs, plus the coordinated arm drive and body angle, produces a larger horizontal impulse than using just one leg, setting up a faster, more stable start. Relying on a single leg would limit the total force and disrupt balance, reducing acceleration.