ddliddler, lucky I saw your post as I am having some back problems too as I play guitar. This problem may be caused by guitar playing or maybe not, but I'm probably not helping my back by playing improperly. I noticed 'classical' guitar mentioned in one of the replies and I'm new to guitar so I don't know enough yet about different guitars and playing techniques. [u]Basically, my question, to anyone, is whether this type of guitar support is also helpful to someone playing 'acoustic' guitar? [/u]

I've always thought 'classical' guitar was different and I shouldn't play in a position like that if I am playing 'acoustic' guitar. However, the 'classical' position seems to be more comfortable to me!!

I go max 30 minutes and then take a break and rarely practice over an hour actually.