Help up board the exercise that call a leg experiences instep to stretch tight to leave the action that presses water continuously
2, hit water with crus only
Wrong action: In moment of the crawl of begin to learn, hitting water with crus only also is an one of very common wrong actions. Because did not master the behavioral essentials that calls a leg good,this is, the concept of the movement that call a leg is not very clear. Main reason sends force to hit a leg to cause only from knee joint, knee has bent big; Did not accomplish send force by coxa ministry, ham drives crus, ankle to make the motion that hit water.
Crus dozen water
Right movement: Understanding coxa ministry sends force, ham drives crus, ankle to make the motion that makes water; Make sure straight leg calls a leg first, extraordinary experience ham drives crus to hit water, emphasize carry on straight leg. (can consult the movement summarizes ministry of issuance the crawl leg basically)
Experience ham drives crus to hit water movement
Improve a method: Through copy of land upper mould the exercise that call a leg experiences ham to drive the behavioral essentials of crus, notice straight leg calls a leg when the exercise, when carrying on must carry on straight leg. Skilled and junior travel helps an edge up to hit a leg to practice, the key experiences ham to drive movement of crus, ankle, undertaking helping up after adroitness board call a leg till adroitness till.
Copy of land upper mould practices experiencing ham to drive crus
Help an edge up to call leg practice
Help up board the exercise that call a leg experiences ham to drive crus
3, straight leg hits water or leg ministry is rigid
Wrong action: Hit water1000 beautiful nets of Shanghai are handed in1000 beautiful nets of Shanghai make friend