My guess is today's recommendations to move every 30m/45m or so were a compromise between ergonomists and employers given more frequent interruption was not practical in the workplace.
In our study 100% of participants reported no discomfort even compared to high end ergonomic chair. Aside from what our chair does it does show how impactful more frequent posture changes can be. https://www.sciencedirect.com/science/article/abs/pii/S00036...
Anecdotally, I can sit in a chair for hours, but sitting on a rock or reclining on the ground (things I do often) seem to cause my (45+ year old) body to "set in" and it becomes difficult to move afterwards.
My guess is today's recommendations to move every 30m/45m or so were a compromise between ergonomists and employers given more frequent interruption was not practical in the workplace.
In our study 100% of participants reported no discomfort even compared to high end ergonomic chair. Aside from what our chair does it does show how impactful more frequent posture changes can be. https://www.sciencedirect.com/science/article/abs/pii/S00036...