These classes are open to athletes with impairments such as, but not limited to, muscle power disorders, limb deficiencies, hypertonia, ataxia, or athetosis.
[5] The World Triathlon revised the Paratriathlon classification system in preparation for the sport's debut at the 2016 Summer Paralympics.
The first is for athletes who do not have access to a full classification panel; it is a temporary indication of class, generally used only in lower levels of competition.
This policy was put into place in 2014, with the goal of avoiding last minute changes in classes that would negatively impact athlete training preparations.
All competitors needed to be internationally classified with their classification status confirmed prior to the Games, with exceptions to this policy being dealt with on a case-by-case basis.
For sportspeople with physical or intellectual disabilities going through classification or reclassification in Rio, their in-competition observation event is their first appearance in competition at the Games.