Newer types of cross-training equipment may require other shoe considerations. For example, on a typical treadmill, one often places the running surface at a 1–2% incline to compensate for the lack of wind resistance. On an AlterG™ (Fremont, CA, USA) treadmill, where one runs at less than full bodyweight, especially less than 85% of body weight, the runner will strike more on the forefoot [1] (Fig. 17.3). This may require more forefoot padding in the shoe, and cause faster forefoot shoe wear. On elliptical trainers, conversely, the shoe may need to be thinner under the forefoot so there is less vertical displacement (Fig. 17.4).