Critical Swim Speed
Your Critical Swim Speed (CSS) is the predicted pace you could currently swim a 1500m time trial. The 400 and 200 times within your test are used to calculate your CSS.
Relationship of Systems Used
During both parts of the test, you will be utilising both your aerobic and anaerobic systems. The test is designed to determine what you are capable of swimming aerobically as this is a sustainable effort. The anaerobic part of your test is ignored. (The CSS test assumes you are unable to swim the whole 200 anaerobically).
To calculate CSS the time taken for 200 is subtracted from the time taken to complete the 400 and the resultant time divided by two to get your min per 100 pace. CSS is reliant upon the relationship between the two parts of the test as well as the speed itself.
Copyright MyProCoach™ Ltd © May 2018. All rights reserved