1. Australian and New Zealand Intensive Care Research Centre, Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia
2. Department of Physiotherapy, The Alfred Hospital, Melbourne, VIC, Australia
3. Department of Intensive Care, The Alfred Hospital, Melbourne, VIC, Australia
4. Department of Physiotherapy, Monash Health, Clayton, VIC, Australia