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      為什么田徑運動場的跑道都是橢圓形

      來源: 作者:

        標準的田徑運動場都是400米一圈的橢圓形,它由兩條直線跑道和兩條半圓形的弧線跑道連接而成。這樣的設計并不是隨意而來的,它充分考慮了人體的運動習慣?!   ?/p>

      慣性使人在運動過程中總有保持原來運動狀態的趨勢,要改變運動狀態就需要借助外力的作用。如果將跑道設計成圓形,運動員每時每刻都要改變運動方向,體力消耗較大;如果設計成正方形,運動員在四個端點處的變向就會過大,不利于運動的連貫性;如果設計成直線,會使場地的范圍過大,不便于觀看比賽?!   ?/p>

      因此,田徑運動場選用橢圓形設計:兩條直道可以節省體力,半圓形的彎道也避免了因方向突變給運動員帶來的不必要的體力消耗。同時,橢圓形跑道中間的場地還可以被用來進行其他比賽,也便于觀眾觀看比賽。

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