Wheelchair basketball is a sport playe primarily by people with disabilities. In some countries such as Canada, Australia and England, able-bodied athletes are allowed to compete alongside other athletes on mixed teams. It is based on basketball with some adaptations to reflect the presence of the wheelchair, and to harmonize the different levels of disabilities players have. All teams which compete above a recreational level use a classification system to evaluate the functional abilities of players on a point scale of 1 to 4.5. In places where teams are integrated, able-bodied athletes would be classified as a 5, and an individual with the highest degree of disability (such as full paraplegia below the chest) would have the classification of 1.0. Classification is an international regulation for playing wheelchair basketball, where competitions restrict the number of points allowable on the court at one time. However, at this time, athletes are only allowed to compete internationally if they have a disability.