Do you have data that indicates that contributes to RSI?
Well, I have horrendous neck and shoulder problems from years of sitting improperly. I had no issues whatsoever for decades of uber-nerdy computing, then blammo, I went from, "my neck seems tense" to "my left index finger is numb and I can't sit at a computer for more than an hour" in a couple of months. An ex, who had previously been a massage therapist, even specifically warned me that I had problems in the upper back area, but since I felt no discomfort I ignored her.
Here's the really bothersome part: while this awful neck/back injury was developing, things that were terrible for me actually felt good. For example, having one leg crossed over the other, left arm on my knee, slouching forward with my chin resting on my hand. It felt like a great neck stretch but, wow, was it ever demolishing my neck!
As for RSI with regards to the wrist and hands, I don't see how proper posture could exacerbate wrist pain. If it does, I would suspect that you need to examine other factors, like keyboard height and hand placement width (e.g. my Kinesis puts my hands much further apart than a standard keyboard, which makes a huge difference in wrist pain).
By the way, did you know that modern shirts are actually cut differently than decades past, because the average person's shoulders have rotated significantly forward? If you try to maintain posture in a typical, modern shirt, you'll have bunching in weird places because it's not cut for that!
Well, I have horrendous neck and shoulder problems from years of sitting improperly. I had no issues whatsoever for decades of uber-nerdy computing, then blammo, I went from, "my neck seems tense" to "my left index finger is numb and I can't sit at a computer for more than an hour" in a couple of months. An ex, who had previously been a massage therapist, even specifically warned me that I had problems in the upper back area, but since I felt no discomfort I ignored her.
Here's the really bothersome part: while this awful neck/back injury was developing, things that were terrible for me actually felt good. For example, having one leg crossed over the other, left arm on my knee, slouching forward with my chin resting on my hand. It felt like a great neck stretch but, wow, was it ever demolishing my neck!
As for RSI with regards to the wrist and hands, I don't see how proper posture could exacerbate wrist pain. If it does, I would suspect that you need to examine other factors, like keyboard height and hand placement width (e.g. my Kinesis puts my hands much further apart than a standard keyboard, which makes a huge difference in wrist pain).
By the way, did you know that modern shirts are actually cut differently than decades past, because the average person's shoulders have rotated significantly forward? If you try to maintain posture in a typical, modern shirt, you'll have bunching in weird places because it's not cut for that!