Bench steps

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

Step up:

Stand facing a bench. Place one foot on the bench and the other on the floor. Push through the bench foot and lift the body up. Do not allow the trailing leg to touch the bench. Lower under control, pause briefly at the bottom and repeat. Compete all reps for one side before changing legs. Start on a low step – look to increase the height of the step.

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):

Step up:

Stand facing a bench. Place one foot on the bench and the other on the floor. Push through the bench foot and lift the body up. Do not allow the trailing leg to touch the bench. Lower under control, pause briefly at the bottom and repeat. Compete all reps for one side before changing legs. Start on a low step – look to increase the height of the step

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 nine 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....