Overton has arthrogryposis multiplex congenita,[1][2] a medical condition which "causes muscle weakness and a tendency for bones to break easily".[4] It also results in joints that are immobile.[2] Her arm has been broken more than forty times, she has coped with multiple bulging discs and had six surgeries on her knee since 2008.[2][5] Because of her disability, she has required the use of an electric wheelchair and is in constant pain.[2]
Swimming
Overton is a S1 classified swimmer.[1][5][6] When swimming, she cannot use her arms and uses her head instead of hands on the touchpad.[2] She competes in the 50 metres backstroke, freestyle.[2][5] Overton is a member of the Burnside Swimming Club.[5] She is coached by Shelly Camy, who became her coach eighteen months before the start of the 2012 Summer Paralympics.[4] Part of her training includes Pilates.[2]
Overton started swimming as physiotherapy when she was a baby,[3] and started competing at twelve years old.[2] She made her national team debut at the 2006 IPC World Championships in Durban,[1][3] winning a silver medal in the 50 metres butterfly and backstroke events.[7] She competed at the 2008 Summer Paralympics in two events.[1][2][5][7] Competing in the 50 metres backstroke event, she finished fifth.[5] In the 50 metres freestyle, she finished sixth.[5] Seven weeks before the 2008 Games, she had a collapsed lung and a day before the start of the Games, she broke an arm.[1]
Overton competed at the 2010 Australian National Championships. Prior to the event, she had applied for an exemption so she could wear a swimsuit that had a zipper. When this was declined, she tried to put on a legal swimsuit and broke her arm in the process but she continued competing with the injury.[3] She competed at the 2010 Paralympic World Championships.[3] At the 2011 Para Pacific Championships, she finished third in the 50 metres backstroke event.[1] In October 2011, she got a new swimming coach.[5] Going into the 2012 National Championships, she was dealing with three bulging spinal discs[5] as a result of swimming into a wall three weeks before the event.[8]
In April 2013 at the age of 23, Overton retired from professional swimming. She was forced to consider her future after a lack of competitor interest in her classification led to the cancellation her event at the 2013 IPC Swimming World Championships.[10]
She is an inductee of the Swimming South Australia Hall of Fame.[11]