They are known as Tapotement, which are done in a light and brisk fashion using a part or all of hand, depending on the type of movement.
Explanation
.
Walk-standing is required when some form of rocking of body weight is required between the two legs. In the case of wringing, the legs are firmly in one position in a slightly squatted position. This position is called Stride-standing.
There are two types - Superficial and Deep. Superficial is performed using very light pressure, with hand flexible and full hand contact. Deep refers to depth of pressure on tissue, done again with full hand contact, but with more depth of pressure applied. Return stroke after a deep stroke should be superficial to avoid reversing effects of deep stroke!
In Petrissage, care must be taken not to pinch skin, which is prevented by gently relaxing the pressure as the bulk of tissue diminishes.