The 48-year-old man, who cannot be named, was operating a small clinic inside a Canberra gym in May 2009 when the rape is alleged to have occurred.

He offered the young woman, who worked at the gym, a massage so she could spruik his services to her clients.

But the Crown alleges the masseur began touching the woman sexually during the massage. It says she told him twice to concentrate on her upper back but he ignored her and raped her.

The complainant says she froze and was unable to tell him to stop, call out for help or to get off the massage table.

She gave evidence that she was in shock and that there was a disconnect between what her mind told her to do and what she could do.

The woman contacted a friend soon after to tell him something had happened, and then went to the police.

The masseur claims the sex was consensual, saying the woman became aroused during the massage, grabbed his hand and said, ''Play with me.''

He said he failed in his obligations as a professional masseur and husband by giving in to her sexual demands and said she had put him under a spell.

Crown prosecutor Mark Fernandez and defence barrister James Lawton both gave their closing submissions on Thursday.

Mr Fernandez asked the jury to look at how the complainant had responded to the accused's version of events, which were put to her in a series of ''confronting questions'' in cross-examination.

The woman had responded with surprise, shock, and then complete denial, Mr Fernandez said.

He said the jury could see her responses were ''quite clearly genuine''.

He described the masseur's story as ''completely unbelievable, self-serving nonsense'' and said he had set about blaming the woman for everything that happened.

Members of the jury were asked to put themselves in the shoes of the woman, who was not even half the man's age and barely knew him.

She was expecting a professional massage at her workplace, the Crown says, and was in a vulnerable position, stripped of everything but her underwear, and lying down on the table.

But Mr Lawton told the jury that it was a ridiculous idea to think that his client would undertake extensive training as a masseur, then use his position to offer the woman a massage at their workplace, rape her and then continue on as if nothing had happened.

He said the physics and mechanics of the woman's story did not make sense, nor did her claims that she froze, given she turned over on the table, and spoke a number of times, telling him to concentrate on her upper back and that she was not on the pill.

Mr Lawton also drew attention to the woman's evidence that she had worried others might hear the sound of her buttocks being slapped, saying that someone being raped would want people to hear so they could come to her aid.

The trial continues on Friday before Justice Hilary Penfold.