‘For a long time, I explained it as having weak muscles as to the reason I fell over often and walked funny,’ she said.
‘By the time I was 13, I was in a wheelchair fulltime, having lost the ability to walk.’
On Sunday, the 28-year-old will complete the five-kilometre Swan River Run for Muscular Dystrophy WA.
Miss O’Donnell said she wanted to participate in the run because she was passionate about raising awareness about the disease.
She will roll alongside muscular dystrophy junior ambassador, three-year-old Charlie.
‘I hope that it is a fine day, no rain,’ Miss O’Donnell said. ‘And I hope to complete the run in around 45 minutes accompanied by my fellow ‘Run with Charlie’ team mates.’
Muscular Dystrophy WA chief executive John Gummer encouraged people to donate.
‘We certainly cannot achieve this without the support of our riders and the WA Community,’ he said.
‘We are extremely fortunate to have a number of individuals who are impacted by muscular dystrophy, supporting us through their participation in the Swan River Run.’
Miss O’Donnell is hoping to raise $4000.
To donate, visit https://swanrun2014.everydayhero.com/au/brianna-odonnell.