Australian swimming is under renewed pressure to better look after its athletes amid allegations of abusive training at an elite swim school.

The prestigious training program is accused of bullying students to the point where they quit or needed counselling.

Letters from parents complained of alleged humiliating public weigh-ins and some swimmers being taught how to 'purge' after meals.

Australian swimmer Shayna Jack faces a four-year ban after banned muscle booster Ligandrol was found in her drug test sample 

The complaints came to light as Australian swimmer Shayna Jack faced a four-year ban after banned muscle booster Ligandrol was found in her drug test sample.

Her positive test, and the distress evident in her public statements afterwards, also highlighted Australia's 'win at all costs' sporting culture.

'It is part of a culture that's very damaging and can cause real damage to kids out there training,' David Campbell said on Weekend Today.

'What are we doing