upper arm position 中文意思是什麼
upper arm position
解釋
掛臂屈伸上-
An elevation of the shoulder, medial rotation of the upper arm, and late flexion at the elbow as the body rotates to accommodate an " elbows - up " position and to reposition the forearm / hand drag surface to where forward propulsion can be created
提肩,上臂轉一半,然後屈肘使身體轉動達到一個高肘位置接著重新入水並使前臂和手掌通過抱水能夠產生向前的推進力。
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