Acceleration - defined

In 2000 I wrote, published and claimed copyright on this concept (bolding added now):

Acceleration

The athlete’s speed component focus following the first few movements is on acceleration - provided the sporting action has the distance and time frame to cope. If the action or event is over within one to two seconds, the need to fully exploit acceleration is absent

I was conducting research and I came upon the following exercise in a publication copyright claimed by another 'author' at a subsequent date (bolding added):

Acceleration:

the ability to increase speed and approach maximum speed. This is less important in short distance sports as the action is typically over in 1-2 seconds and the need to fully exploit acceleration is absent.

And I said to myself: “That looks familiar!” So I cross-referenced it and I said to myself: “Wow! No wonder that looked familiar!”

Published in the absence of credits or references to the origin or permission to use from the original author (myself), and that the 'author' claimed copyright....