The Different Concepts of Pose in Zen Buddhism

In Zen Buddhism there is an idea of a sitting posture. I wonder if the people who developed and practiced Zen in the east, if their concept of posture is fundamentally different from what most Westerners have. They definitely had a different notion. And so again, when you try to transport a living tradition to another tradition who doesn't have any of the same concepts and presuppositions, it's much more difficult.