What is the main reason athletes use fiberglass bars instead of metal bars in high jump events?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Fiberglass provides better flexibility and reduces injury risk.
The main reason athletes use fiberglass bars instead of metal bars in high jump events is that Fiberglass provides better flexibility and reduces injury risk.
The primary consideration is safety and impact absorption. The modern high jump uses a knock-down crossbar designed to displace easily when touched.
- Safety: A fiberglass bar is light, thin, and has a slight flexibility (or elasticity). When an athlete hits the bar, the fiberglass bends and immediately falls off the supports. This minimizes the risk of the rigid bar snapping back or creating a dangerous rebound effect that could cause neck, back, or head injuries, especially when landing on the thick padding.
- Compliance: Rules mandate a lightweight, knock-down crossbar. A metal bar would be too rigid and heavy. If a metal bar were used, it would either be difficult to knock off, presenting an injury hazard, or its rigidity would absorb less impact upon falling, increasing wear on the landing mat. Furthermore, metal tends to be heavier, making it non-compliant with the official weight specifications (typically 2.0kg) for the crossbar.