According to current data, the world records for the 100 meter swimming events in each stroke are:
- Freestyle: Men - 46.40 seconds, Women - 51.60 seconds
- Backstroke: Men - 51.60 seconds, Women - 58.08 seconds
- Breaststroke: Men - 56.88 seconds, Women - 1:04.62 seconds
- Butterfly: Men - 49.28 seconds, Women - 55.64 second
- 但是用的肌肉群不同，效率不同。长距离大家会选效率最高的（freestyle). 三项都选自由泳，还有一个主要原因是可以少用腿。
