The graphs are a bit too small for me to see in detail but I'm interested in this stuff too.
Can you explain what we're looking at in a bit more detail? What are the latest graphs showing?
What prompted you to start training at this place? Were you getting back pain? Was it general interest?
I had a go on one of these machines last year at Kieser Training in Melbourne but I can't remember the results. Vaguely remember being above average but not by as much as I would've liked, and I was relatively weak in the first couple of positions. Some positions were definitely way more comfortable than others.
If you look at the second graph you'll see a solid black line, that is the strength curve we need to be at.
Isometric tests were done at certain degrees of lumbar flexion, starting at 60, which in simple terms means bent over to 48, 36, 24, 12 and finally 3 which is sitting upright and pushing against the pad with my back for 5 seconds as hard as i can at each point.
My strength is pretty good, but i fatigue rapidly after 24, the goal is to increase my strength in that area, to flatten the line.
Over the last 4 weeks ive been using the lumbar machine with amazing results.
All barbell movements train a muscle in this manner, good machines are designed to have a flatter strength curve.
As the graphs indicate my back strength is very good, well above average and into elite area, until i get to 24 degrees of flexion, the last graph shows a considerable increase in strength as well as my strength curve a lot flatter (top line), which means my erectors are stronger than before testing.