I used to help out doing some polishing when the woodwork was slack,and we used to stand up all day polishing.
Then when another company took us over their polishers used to sit down,polishing.
We tried it and it was o.k for certain jobs,but you seemed more restricted in moving your body the way you could when standing up.
After a while my back and hips would start to ache,so much so by the end of the week i'd be in agony.Plus i found that you got too relaxed,meaning when polishing 9 time out of ten the item would fly down the chute but wood turning 9 times out of ten the object comes towards you.
So i think i would still prefer to stand up:roll:
Paul.J.