When track meets are held at altitude, the sprint performances are usually better than at sea level because of the A) lower PO₂. B) greater reliance on creatine phosphate for energy. C) greater reliance on anaerobic glycolysis for energy. D) lower air density.

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When track meets are held at altitude, the air density is lower, which means there is less air resistance, making it easier for sprinters to move through the air. This can result in faster sprint performances.

When Track Meets Are Held at Altitude, the Sprint Performances