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.
The swimmerâs stroke, or swim style, also determines how fast a swimmer can swim. The freestyle stroke, also known as the front crawl, and the backstroke are the fastest swimming strokes, taking advantage of relatively constant speeds, according to Gary W. Hall, M.D. for Swimming World Magazine..