Im no expert, but I would say yes. A recliner is totally different. It is a bit like lying down, as opposed to sitting up, supporting your own weight.
But I think there is an answer to the OP in this. If you sit on the floor, the knees are very much above your hips (unless you stretch your legs, which makes it even more uncomfortable), and both ways, it is actually almost impossible to keep the s-shape. You bend forward in the lower back.
Wilson PS Classic, Gosen OG Micro 16, 26 kg.
Last edited by Povl Carstensen; 01-14-2013 at 11:26 PM.