Cushions and seating are powered or non-powered devices placed on a wheelchair or other seating surfaces. They utilize air, fluid, foam, gel, water, wool or a combination of these components to distribute pressure and reduce friction and shear forces.
PNF stands for Proprioceptive Neuromuscular Facilitation. This type of stretching is often referred to as partner stretching because two people are needed to perform the movements. There are many forms of PNF, but most involve an isometric hold followed by a static stretch of the same muscle group.
In order for a contracted muscle to initiate lengthening in another muscle, however, the two muscles must perform opposite joint actions. Since the hip flexors bend the body at the hip and the abductors assist in that movement, the flexors do not stretch as the abductors contract.