THREE SYSTEMS OF AGE GRADING COMPARED




Introduction

In these graphs age is on the horizontal axis, on the vertical axis can be seen how the three systems of age grading compare to the tangent of the graphs on the previous page. In each graph:
1. Purple line: the tangent line rotated to horizontal at y=1
2. Orange line: gradings of system 1 (version 1994)
3. Blue line: gradings of system 2 (revision 2007)
4. Green line: gradings of the current system 3 (2010)
When one of these lines is higher up in the graph for the highest system it is hardest to score 100% (in a multi event you would get less points). Is one of these lines lying above the purple line then a masters world record for that age scores less than 100%. But when the purple line is the highest line in the graph, then there are (real or supposed) records that get more than 100%. Often those records have not been taken into account in the making of the gradings, as supposedly aided by drugs or something like that. (See also the previous page.)

Dependent on...

The tangent, the purple line, is an arbitrary line, it is dependent on which two records were chosen in the calculation of the tangent. Hurdles and steeple are not yet taken into account. The running distances are only those with stronger records -- all other distances are relatively weak, both in the open class as in masters athletics. (Not used: 50i, 1000, mile, 2000, 15K, 10 mile, 20K, 1 hour, 25K, 30K).

Women

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See also:
Backgrounds of age gradings
Three systems of age grading compared
Differences between disciplines
A mathematical model of gradings
The model in use
Tests, fine tuning, problems



Weia Reinboud (weiatletiek (at-symbol) xmsnet (dot) nl)

Also see my page on athletics, in case it isn't open yet.