All about base excess â to BE or not to BE. In 1948, Singer and Hastings introduced the concept of buffer base (BB). The change in BB from normal was called deltaBB (Î´BB). This change in BB was an expression of the non-respiratory (metabolic) component of an acid-base disturbance.
Empirically from http://www.usaswimming.org/_Rain..., free style is the fastest stroke. This is also called the front crawl (see Front crawl). However as Swimming stroke notes, there are at least 6 variations of that technique.
Breaststroke. Breaststroke is the most popular swim stroke of all. In breaststroke, both arms execute half-circular arm movements at the same time under water in front of the swimmer. The arm recovery also occurs under water.he swim strokes used in competitions. Besides these common strokes, other styles of swim strokes exist like the sidestroke, the trudgen, the combat swimmer stroke etc. They are used less often but can also be fun to learn.