The flow direction of the water that can be anticipated in the different swimming strokes can be described simply. There are four unique flows I coach and teach swimmers to recognize in their swimming technique...
● Distal Flow
● Radial Flow
● Ulnar Flow
● Proximal Flow
■ The oncoming flow of water which the swimmer can experience in the freestyle hand entry will move from the swimmers fingertips to their wrist and along their arm -This is known as distal in its direction.
■ A water flow that moves toward the swimmers radial bone (or from thumb to little finger) is termed radial, for example, the flow produced when the swimmers elbows bend to bring the hands under the body in the front-crawl, butterfly, and breaststroke.
■ Ulnar water flow moves towards the swimmers ulnar bone or from their little finger to thumb, for example, the flow produced as the arms extend and the stroke rounds out to the hips in the crawl and butterfly.
■ Proximal flow when it moves from the swimmers wrist toward their fingertips, as happens in the backstroke as the swimmers arm straightens at the end of the stroke.
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