The meaning of "rotation" is the circular movement of an item about a fixed point or the turning around of its own axis. A three-dimensional object rotates along a fictitious axis known as the ...

1 School of Physiotherapy, Curtin University, Bentley, WA 6102, Australia 2 Curtin University, Bentley, WA 6102, Australia Correspondence to: Dr Hopper School of Physiotherapy, Curtin University, ...