They wear a cup and protective pads
The shoulder girdle(pectoral girdle) functions as a point of flexibility. The clavicle, scapula and the humerus articulate in the girdle.
pector girdle is more flexible
The only girdle I know of what Hippolyta's Girdle. A girdle then is the same as a girdle now, they just serve different purposes. A girdle is a wide sash or belt worn at the waist. For Hippolyta, it was her symbol of authority.
The pelvic girdle must support about 2/3 of your total wight, the pectoral girdle just has to support your arms.
When you wear a girdle the fat is squeezed into the girdle giving one a slimmer appearance.
yeahh it is necessary, not wearing a girdle leaves your hips open to helmets and anything else, the hip or side is a very frequent spot where the football player will take a hit by a helmet, plus landing on your side after getting hit or jumping for a ball is alot less painful if you have your girdle w/hip pads on. It also helps to keep your thigh pads in place if your girdle has pad pockets in them which i have found is a lot easier.