There are no general age limits for participating in the Olympic Games. Age limits for individual sports can be enforced by the International Sports Federation, which governs each Olympic sport. Such age restrictions must be approved by the International Olympic Committee.
As of 2015, there is significant variability in the age limits imposed by the different sports' governing bodies. While some sports, such as men's basketball, have no age restrictions, others, such as gymnastics, require participants to be at least 16 years of age within the calendar year that the Olympics occur to compete. Very few sports have maximum age limits. Some examples of those that do are boxing, with a maximum age of 40, and men's soccer, which limits teams to a maximum of three players over the age of 23.