Tricep Pressdown Tri-set

In 2000 (and on a few other occasions) I published and claimed copyright on this exercise description (bolding added now):

Tricep Pressdown Tri-set :

Use the same principles as above. First position is an overhand or pronated grip with palms as close together as possible. The second position is a medium grip. The third and final position is the same width with hands reversed.

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):

Tricep Pressdown Tri-set :

Uses the same principles as above. First position is an overhand or pronated grip with palms as close together as possible. The second position is a medium grip. The third and final position is the same width with hands reversed.

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

I noted that the use of this description was 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....