 There are also extrinsic risk factors that can effect an athlete's risk of injury.Some examples of extrinsic factors would be sport specific protective equipment such as helmet, shoulder pads, mouth guards and shin guards, and whether or not these pieces of equipment are fitted correctly to the individual athlete to ensure that they are each preventing injury as well as possible.Other extrinsic factors are the conditions of the sport setting, such as rain, snow, and maintenance of the floor/field of playing surface.