What makes a good backstroke swimmer?
Swimmers with a high anthropometry score—that is, their arms are relatively long in relation to their height—tend to do best in the long-axis strokes of freestyle and backstroke.” Shorter legs have also been found to be advantageous for swimmers, as they help add more power without creating lots of drag.
What is the key to backstroke?
The key to good backstroke kicks is to kick from the hips, not the knees. Kicking from the knees means you’re bending them back too much, which will increase drag. One way to tell if you’re kicking from the knees is when your knees break the surface of the water.