The LAS (Lactic vs Speed) Test. This article explain about procedure for The LAS (Lactic vs Speed) Test. This test is one kind of fitness test to measure speed endurance capacity. The objective of this test is to monitor the 400 meter athlete's speed endurance.
Required resources
To undertake this test you will require:
• 400m track
• Stop watch
• Assistant.
How to conduct the test
• Have the athlete perform a 500m time trial
• Record the time (T1)
• At least 48 hours later have the athlete perform the following sprints:
• 50m – record the time (T2)
• 4 minutes recovery
• 100m – record the time (T3)
• 4 minutes recovery
• 150m – record the time (T4)
• 4 minutes recovery
• 200m – record the time (T5)
Analysis
Sum the times S1 = T2 + T3 + T4 + T5
Compare the times T1 (time for the 500m run) and S1 (total time for the sprints) – In my experience the difference should not exceed 5 seconds. If the difference is more than 5 seconds then this indicates a lack of endurance and a difference less than 5 seconds indicates a lack of speed.
Analysis of the result is by comparing it with the results of previous tests. It is expected that, with appropriate training between each test, the analysis would indicate an improvement.
Target group
This test is suitable for male and female 400m runners.
Reliability
Reliability would depend upon how strict the test is conducted and the individual's level of motivation to perform the test.
Validity
There are no published tables to relate results to potential performance in competition.
Reference: Brian Mackenzie, 2005. 101 Performance Evaluation Test