My understanding

A good breast stroker maintains constant speed. He gets propulsion from both the legs and the arms. The frequency of movement is the same for both. But the time duration from the start of leg movement to the start of arm movement is longer. Therefore, the propulsion from the legs is stronger.

所有跟帖： 

• 确实，蛙泳比较特殊 -CMP- ♂ (167 bytes) () 09/20/2007 postreply 13:37:29

• No. legs cause more resistance when curled up -DukeGuy- ♂ (0 bytes) () 09/20/2007 postreply 21:17:09

• you can never keep constant speed in BS. The lesser the speed v -华伦久费- ♂ (32 bytes) () 09/20/2007 postreply 21:49:01