The time between each frame is not known. Andrei Serdinov's time was 51.76, a new world record that was broken in the next semi-final race. This stroke analysis includes a moving sequence in real time, a moving sequence where each frame is displayed for .5 of a second, and still frames. The following image sequence is in real time. It...

Each frame is .1 seconds apart. Differences between this sequence and actions described in the 35-m analysis might be due to the fact that this stroke is non-breathing while the former was a breathing stroke. Further differences could be attributable to fatigue. Notable Features Frame #1: The hand entry is almost at shoulder width,...

The time base for this observation is not known but the duration between each frame is constant. Notable Features Frame #1: Entry is made with both hands pitched outward indicating that an initial outward arm movement will be necessary to reposition the arms to where they can propel effectively. The body and head are diving down...