The backstroke is, as its name suggests, the only one of the four competitive swimming strokes swum on the back. Because it targets the back muscles more than the other strokes, it is excellent to give the back a good workout and to strengthen it.
Here's a nice video of Ryan Lochte demonstrating the stroke:
The video allows us to have a quick overview of the stroke's swim phases. The starting position is as follows:
The arms move in an alternate windmill-like fashion:
The following articles give more details about the stroke's technique:
Head and Body Positions: Explains how the head and body should be positioned and how the body should move.
Arm and Hand Movements: Explains the correct arm and hand motions to move efficiently and avoid strain on the shoulders.
The Backstroke Kick: Shows how the legs move, describes mistakes to avoid and gives tips for an efficient propulsion.
How to Swim Backstroke and Avoid Breathing Issues: Explains how to swim backstroke with good breathing technique. Discusses the importance of balance, how to deal with splashing water and rhythmic breathing.
Learn To Swim The Backstroke: Teaches swimming drills and exercises to learn the stroke without struggle.
Besides the regular version of the backstroke that is also swum in competitions, alternatives exist that are swum more seldom but can be interesting nevertheless:
Elementary Backstroke: Describes the swim phases and swimming technique of elementary backstroke, which is the beginner's version of regular backstroke. Gives advice to learn how to swim the stroke.
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