Oscar Pistorius had "the dreams of all the disabled people out there" resting on his shoulders, according to his former lawyer Wergele McKenzie.
Mr McKenzie told ITV News he believes Pistorius was letting the pressure "get to him" before the night he shot his girlfriend Reeva Steenkamp.
Oscar Pistorius' former agent Ray Wicksell said the wait for the court judgement was "harder than trying to prepare for any Olympic Games" for the athlete.
Speaking before today's verdict, he told ITV News: "This whole court decision is tougher than anything he can imagine times it by a million."
The uncle of Oscar Pistorius said the family were "deeply affected by the devastating and tragic" death of Reeva Steenkamp and added that the athlete being cleared of murder was a "big burden" off the Olympian's shoulders.
Arnold Pistorius said: "[We want to] show how grateful we are to the judge after she found him not guilty, the verdict is a big burden of our shoulders and Oscar's.
"We always knew the facts of the matter and never doubted Oscar's version of this tragic incident."
He added: "There's no victors in this, we as a family remain deeply affected by this devastating and tragic event and it won't bring Reeva back but our hearts go out to her family and friends."
Oscar Pistorious' former training partner has said that the athlete was "a different guy" when he returned to the track a few months ago before his trial.
Talkmore Nyongani told ITV News that he appeared "broken up".
Oscar Pistorius was surrounded by the world's media after leaving court today where he was found guilty of culpable homicide.
The athlete had to be escorted to his car by police officers due to the amount of people outside the Pretoria court.
South African Paralympian Oscar Pistorius has left a court in Pretoria after he was found guilty of culpable homicide.
Oscar Pistorius' lawyer Barry Roux, uncle Arnold and aunt Lois have left a court in Pretoria where the athlete was cleared of murder but found guilty of culpable homicide.
Oscar Pistorius will be sentenced on 13 October after being found guilty of culpable homicide and firing a gun in a busy restaurant.
A South African judge has extended Oscar Pistorius' bail after the athlete was found guilty of culpable homicide.
Oscar Pistorius showed little emotion and stared straight forward when he was cleared of murdering his girlfriend Reeva Steenkamp but found guilty of culpable homicide.