Skipping (gait)

[2] Unlike walking or running, skipping is an asymmetrical movement in which successive footfalls are not evenly spaced in time.

Unilateral skipping is commonly used by humans while descending stairs or maneuvering sharp turns.

[2] Astronauts Ed Mitchell and Gene Cernan of the Apollo 14 and 17 missions respectively, both preferred the use of unilateral skipping as a means of traversing the surface of the moon.

[5] In lunar gravity conditions, the differences in metabolic consumption rates between running and skipping become marginal.

As a chronologically asymmetric movement, the constant speed of the treadmill poses a risk for injury.