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.
2.29 m/s. (1990) In finding the fastest human swimming speed, the actual speeds were rarely stated in any sources. The record times for all the different styles (freestyle, breaststroke, etc.) and race lengths were easy to find so the speed for each of these had to be calculated to find the highest speed.