For all intents and purposes on this site, an invert will refer to any trick where the performer’s head and hips reach an approximate parallel to the floor, or when the performer’s hips reach a plane higher than their head, such as in a flip. In the Aeriform system, inversion is broken into 4 types, based on the flipping axis: backward, forward, inside side flip, and outside side flip. This site will attempt to display inverts not only in this manner, but through their more commonly understood subdivisions. It should be understood that any attempt to explain these movements can be viewed as largely subjective, and should be taken as such until a deeper understanding can be reached.
- Landings: It should be noted that all twisting in tricking is measured to the same point, regardless of actual rotation within the twist. This point is known as the complete landing and is marked by the backward landing, most often on the outside kicking leg, but is also accepted on both feet. Further rotations are subdivided every 90 degrees with alternating landing feet, creating 4 possible landings: complete, hyper, mega, and semi. Simply put, complete and mega landings will land on the outside kicking leg, while hyper and semi will land on the inside kicking leg. Mega and semi each land 180 degrees away from their counter parts, meaning that they land in a more or less forward orientation.
- Flat-spin and Flip: Depending on the twisting axis, the base trick may not be a traditional flip, but instead have what is referred to as flat-spin. Really, flat spins are flips turned horizontally, and can be used interchangeably in most contexts. The most common example of this is certainly the Butterfly (bkick). Rather than raising the hips above the head, as in a flip, these tricks put the tricker on a horizontal plane, where their hips and head are parallel to the floor. In fact, by inverting a Butterfly fully, a typical tricker-style Aerial is achieved. Many other common tricks will often vary their degree of flip vs flat-spin depending on the individual, or the variation being performed. For example, many people choose to use more of traditional flip axis in their corks, where the hips go over the head, particularly for consecutive swingthroughs. This allows a more fluid transfer of energy from one trick to the next. Kicking variations tend to be more efficient by nature when executed with more flat spin, allowing the kicks to target upward, or in line with the flip while maintaining the more traditional circular momentum of a round or hook kick. Both of these styles and applications are simply trends, and by no means the only way to do things.