Dry Swim Information

Swim Coach James Davis getting a good workout on The DrySwim Trainer As seen on the American Inventor

Invented by Swim Coach James Davis and Chief Engineer Paul Dowd, The DrySwim Trainer and Exerciser is the first truly ergonomically designed exercise machine for swimmers. The DrySwim Trainer conforms to the natural and desired body rotation to maintain a steady pace while conserving energy and swimming with ‘the body’ and not just the ‘arms and legs’.

The DrySwim Trainer is a floor model and used without water. There is nothing that you can do in the water that you can’t do on the DrySwimTrainer. You can train distance or sprints. You can do long workouts or short ones. You can do drills including “the catch up” or “single arm drills”. In fact, swimming on The DrySwim Trainer burns more fat then swimming the same workout in the water.

Swimming with ‘the body’ is a universial consistant scientific principle understood through-out all of sports. Everything from hitting a golf ball to throwing a baseball or kicking a soccor ball requires the body to rotate along the center (long)axis of the body running from the top of the head, down the spine and to end of the toes. This rotational axis acts as the power source of every swim stroke.

Below is a description of swimming on which the DrySwim Trainer was designed:
Recent research has shown that hand force applied to the water is really generated by the rotation of the hips, and not by the muscles of the arm. The muscles that pull the arm through the water are attached within one inch of the top of the arm. With a 21″ arm, the lever ratio is 1:20, which means that a 100 lbs. of pull by the shoulder muscles produces only 5 lbs. of force at the hand as it pushes back against the water. The torque generated by the larger, stronger hip muscles, on the other hand, whips the hands through the water, much like golfers or batters whip their clubs and bats through the air with a fast turn of the hips. Elite swimmers who were able to make modest increases in the acceleration of their hips doubled their peak hand force output.

The time spent on the side should be maximized so the shoulders do not break the water-line and do not produce bow waves. This reduces the frontal cross-section, reducing drag further, and also increasing the ratio between the body’s water-line-length and width. Similar improvements are possible by orienting the narrowest direction of head, hands, legs and arms into the water. The torso is by far the most critical. The motion of the hand, arm, and leg from the back to the front should be in the air for as much time during the recovery stroke as possible, and in the water, oriented as hydro dynamically as possible, because the returning appendage has to move at least twice as fast as the swimmer, and in the water generates eight times the drag (which increases with the cube of the speed) of an equal amount of torso frontal area. Rotating your shoulders also adds power to one’s pull by using abdominal muscles to help pull the arm through the water.

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