●Perform a continuous 50 metre legal backstroke. ●連續完成50米合規格的背泳。

1. Perform a backstroke start then butterfly kick in a streamlined position underwater up to a maximum of 15 metres from the start point. 2. Perform recognised turns and finishes 3. Perform a continuous 100 metre legal backstroke 1. 起跳動作，然後流線形在水中做到蝶式踢腳最多15米。 2. 做出認可的轉池及完成時觸池動作。 3. 連續完成100米合規格的背泳。