This little glyph is used by us strength coaches to help us design and communicate the work needed to be done to help the lifter get better.
Let me start with a couple of definitions.
Or reps as they are more affectionately known as. A rep is doing an exercise 1 time. So if you do one squat you’ve done one rep.
No affectionate term for these. A set is several reps of one exercise done in a row. If you do 10 squats (i.e. 10 reps) you’ve done 1 set of 10 reps.
The percentage is how much weight you’ll be lifting. This can vary depending on several factors, but that last number will always be how much weight to lift.
So, now there’s the glyph in words
Sets x Reps @ How much weight to lift.
The next time you see your workout or you’re looking at your workout program, you’ll have no problem knowing exactly how much and how many times you’re supposed to do a lift in your workout!
I hope this helps!