Steelcase recently conducted a global study of computing and posture, research meant to inform their next generation of office furniture. Their conclusion:

As smartphones and tablets — computers whose whole point is their mobility — become more ubiquitous in our lives, they're becoming more common at the office. And they're changing not just the way we communicate with other people, but the way our bodies communicate with their surroundings….

Steelcase concluded that the way we compute is, indeed, changing the way we sit. "What we noticed," says James Ludwig, Steelcase's vice president of global design and engineering, "was these new technologies, this new breed of devices — and the new sociology we were seeing at work — had driven nine new postures that we had never seen before."

Another embodied computing data-point.