i havent herd that one befor, maybe check it out on google? i bought a masage chair with dd, my mum freaked out and told me not to ever sit in it as i would give her shaken baby befor she was born and disrupt the amnio fulid, the whole purpose of getting it was for my back pain! i checked it out and couldnt find anything about it, but never had any dramas with it. needless to say dd was fine, and ill be using it with this one to!
id say if you cant find info on it, well why not? might help to relax!