One of the US athletes who took part in the controversial black-power salute at the 1968 Olympics says a parliamentary apology to Australian silver medallist Peter Norman may have come too late.

"I think it mortally wounded him," bronze medallist John Carlos told ABC Radio today, referring to the nation's disrespect for Norman.

US athletes Tommie Smith, left, and John Carlos carry Peter Norman's coffin from the Williamstown Town Hall on October 9, 2006. Credit:Angela Wylie

"I don't think he was as bitter as he was hurt ... and I don't think he ever recovered."

Federal MPs yesterday praised Norman's "heroism and humility" during debate on a motion to offer the sprinter a posthumous apology.