vinhngo wrote:I also saw somewhere else on this forum that using the footstool backward is a lot more comfortable. Personally I do find it a lot better. That's worth trying too.
I know this may be late in posting on this thread, but I too was having problems with back pain and posture as I was learning and playing.
I used a standard chair with a footrest, and when I quit using the footrest and started to put my heel up on the leg of the chair or the rung , most of my pain was alleviated, however, it was not all gone and it caused me to hold the guitar in an odd position I did not like,but definitely a step in the right direction. The ultimate answer for me was a guitar rest which allowed me to keep both feet flat on the ground, now I can play pain free. I am not a small man, I am 6'1 and 255lbs. Now I can play my 60 to 90 minutes a day easily. I do take breaks at 30 to 45 minutes.