Seated DB Shoulder press

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

Seated DB Shoulder press

Seated with a DB in each hand, at shoulder height, palm facing forward. Extend arms straight overhead. Pause and lower under control to the starting position.

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):

Seated DB Shoulder press

Seated with a DB in each hand, at shoulder height, palms facing forward. Extend arms straight overhead. Pause and lower under control to the starting position.

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

And I came upon this description another three more times by the same 'author' in different publications.

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....