On top of IAAF standards, national governing bodies may apply their own participation restrictions. These principally come in four forms: stricter national qualifying times, reduced time periods for qualifying performances,  performances in the event at a national Olympic trials, and decisions of national selection committees. Smaller nations do not typically apply these additional criteria due to the smaller numbers of sprinters eligible to compete. Larger nations, and nations with strong traditions in sprinting, often have long-running histories of Olympic 100 m trials (such as at the United States Olympic Trials ). Participation for a country also demands that the athlete hold respective citizenship and is not subject to a competitive ban through anti-doping rules .