讨论蝶泳的思维导图

butterfly

Body Position

Body undulates continuously

Hips break surface

Leg Action

Leg action flows from hips

As feet drive down, hips rise

As hips drive down, feet rise

Legs together, feet pointed & turned slightly inward

Arm Action

Hands enter shoulder width apart, thumbs down

Key-hole / facing question marks shaped pull

Shoulders, forearms, and hands lined up vertically at midpoint of pull phase

Accelerated pull past hips

Elbows exit water first

Relaxed recovery, arms clearing but close to surface

Breathing

Breathing occurs every second stroke

Breathing starts at end of pull phase

Head enters and exits surface before hands

Timing

Two kicks per stroke

First kick on hand entry

Second kick toward end of pull phase

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