The only requirement concerning the mounting wall is that it be structurally sound, which most walls are. The exception is partition walls which is not structurally sound in that it has no structural connection to the structural ceiling members above.
Wall Requirements
The wall must be structurally sound, which means it must be connected to the floor beneath it and the ceiling/roof structure above it.
A partition wall is not adequate.
Wood studs are ideal.
If the wall could be used to support the anchors for a body weight suspension system like TRX, the wall is adequate to support the Freedom Climber.
If the construction is new and the details are calling for metal studs, then, if allowed, wood studs can be placed in the channels of the studs to both stiffen the studs and provide ideal anchoring where the Freedom Climber will be located (the width of the Freedom Climber is 110").