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Swimming underwater is faster than swimming on the surface. Underwater swimming is not its own category in the Olympics, but in the 1988 Olympics several competitors swam much of the backstroke race underwater. After that, the Olympics created a rule that swimmers are only allowed to stay underwater for the first 10 meters (later changed to 15 ...
Modified frog kick, also known as high frog kick, short frog kick, [7] and bent knee cave diver kick, [1] uses smaller movements, mostly of the lower leg and foot, which makes it suitable for use in confined spaces, as it is less likely to damage the environment, but it produces limited thrust [1] It is economical on air consumption over time ...
Backstroke swimming (amateur competition, non-optimal style) In backstroke, the arms contribute most of the forward movement. The arm stroke consists of two main parts: the power phase (consisting of three separate parts) and the recovery. [3] The arms alternate so that one arm is always underwater while the other arm is recovering.
But the battle over most medals at world events vs. most golds is what keeps the tension between the U.S. and Australia alive, and probably intensified in the years before the 2000 Sydney Olympic ...
The undulations create components of forward thrust complemented by a rearward force, side forces which are wasted portions of energy, and a normal force that is between the forward thrust and side force. Different fish swim by undulating different parts of their bodies. Eel-shaped fish undulate their entire body in rhythmic sequences.
The face-down swimming position allows for a good range of motion of the arm in the water, as compared to the backstroke, where the hands cannot be moved easily along the back of the spine. The above-water recovery of the stroke reduces drag, compared to the underwater recovery of breaststroke .
The flutter kick in a front crawl. In swimming strokes such as the front crawl or backstroke, the primary purpose of the flutter kick in beginner and intermediate swimmers is not propulsion but keeping the legs up and in the shadow for the upper body and assisting body rotation for arm strokes.
Olympic Games, pool since 1896, open water since 2008, for example swimming at the 1964 Summer Olympics [1] [2] [3]; Youth Olympic Games, since 2010, for example swimming at the 2014 Summer Youth Olympics