It provides a global standard of rule modifications ( based upon the international rules for the sport created by the IAAF ) for athletes of a certain age .
World Masters Athletics ( WMA ) is the worldwide governing body for Masters athletics .
World Masters Athletics provides a global standard of rule modifications ( based upon the international rules for the sport created by the IAAF ) for athletes of a certain age .
World Masters Athletics ( WMA ) is the worldwide governing body for Masters athletics .