Olympian's sexual assault hurt: accuser

A young girl gasped in pain and was "horrified" after an Olympic gold medallist sexually violated her when they were swimming together at the beach, she has told a court.

Arthur Parkin, a member of the 1976 Black Sticks, New Zealand hockey's only Olympic-winning team, is on trial accused of sexually abusing three girls.

He has pleaded not guilty to five charges, including indecently assaulting a girl under 12 and indecently assaulting a girl aged between 12 and 16.

The assaults allegedly happened between 1975 and 1983.

The girl, who is now a grown woman, told the Auckland District Court on Monday the incident occurred in the summer of 1975-76 when she was less than 12 years old.

The pair were with a group of kids and teenagers swimming in Matapouri in Northland when Parkin took hold of her so he could playfully throw her into the water, the woman said.

But he then pushed his fingers under her swimming bathers and violated her, she said.

"I was shocked and horrified, and it hurt like buggery," the woman said.

Parkin then threw her into the water and she swam straight to shore and sat next to her mother and didn't move, she said.

Later, when she was older, Parkin grabbed her hand at the dinner table and pushed it onto his pants so she could feel his erection, she said.

She said she took "decades" to tell anyone about the alleged assaults because she was ashamed and Parkin had been her "hero" and a golden-boy to many.

"Arthur Parkin the great gold medallist, all the kids wanted to play hockey like him," she said.

Defence lawyer Arthur Fairley then showed the woman photos taken about 15 years later at the same beach as where the alleged assaults occurred in which she was leaning on Parkin and allowing her children to be near him.

She also admitted she was not sure if in 2010 she had allowed her 19-year-old daughter to spend up to four nights alone at Parkin's home.

Mr Fairley asked the woman why she allowed her children near the man who sexually abused her, especially as she earlier told the jury she had gone out of her way to avoid him.

She answered she had always been polite to Parkin until she decided - after taking counselling - to speak out about her alleged attacks.

Mr Farley earlier told the jury the allegations were not true and none of the assaults happened.

A three-time Olympian, William Arthur Parkin was entered into the New Zealand Sports Hall of Fame in 1990.