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Starting from physiology. different angles of head’s position causes a series of changes of body’s posture, This article analyses that head’s position being used correctly has an effect on technology of back style over shaft, and the correct head’s position is very important to improve the technology of back-style over shaft in back style of high jump
Starting from physiology. Different angles of head’s position causes a series of changes of body’s posture, This article analyzes that head’s position being used correctly has an effect on technology of back style over shaft, and the correct head’s position is very important to improve the technology of back-style over shaft in back style of high jump