What theories?

Right from the start I needed to understand how labyrinths are constructed. Partly because I wanted to build them myself, partly just to know 'how they work'.
If you want to make a labyrinth with rope on grass, you need to know how much rope you need, given the diameter of the labyrinth. And you have to understand how the lines connect and interact, when you want to make a labyrinth on a specific, non-rectangular spot.

Cadence

While you walk a labyrinth, the visual distance from your position to the centre varies in a rhythmic pattern, a cadence. The most renowned labyrinths, the Classical and the Chartres labyrinth, have a very regular cadence.
That is probably an aspect of their attractiveness.
In Fall 2000 my article on this topic was published by Caerdroia,, the independent journal for the study of mazes & labyrinths. This article can be found as Acrobat downloadable pdf-file on the page Cadence.

Energy

Walking a labyrinth makes a difference. I studied the energetic effects of a labyrinth while building and walking it. My special interest was on the presence and effect of masculine energy.
I presented the results at the 7th Annual Gathering of the Labyrinth Society, October 2005 in Lenox, Massachusetts. The text of my presentation, including some of my graphics, can be found as Acrobat downloadable pdf-file on the page Energy.