The best course of action may be to assess on a patientby-patient basis using rigorous methods based on N-of-1 Pfizer Licensed Compound Library clinical trial research designs. The cost of such an approach would be offset by the savings associated with providing AOT only to those who benefit from it and use it. “
“The six-minute walk test (6MWT) is a self-paced, submaximal exercise test used to assess functional exercise capacity in patients with chronic diseases (Chang, 2006, Solway et al 2001). It has been used widely in adults, and is being utilised increasingly in paediatric populations; it has been used as an estimate of physical

fitness in, for example, children with severe cardiopulmonary disease, cystic fibrosis, and juvenile idiopathic arthritis (Hassan et al 2010). Instructions to clients and scoring: Standardised guidelines for the performance of the 6MWT are published by the American Thoracic Society (ATS) ( ATS, 2002). Walking distance http://www.selleckchem.com/products/3-methyladenine.html is accepted as the main outcome measure

of the 6MWT, although the product of walking distance times body weight is suggested as an alternative outcome ( Hassan et al 2010). The 6MWT is performed individually with standardised encouragements during the test (ATS, 2002). The subject is instructed to cover as much distance as possible in 6 minutes without running. We recommend using a distance of 15–20 metres between turning points, in contrast to the 30 metres recommended for adults. In addition, the test is performed indoors in a quiet corridor or exercise room with no ‘pacer’ (therapist who walks behind the patient) except when there is a high risk of falling (as has been described for children with Duchenne muscular dystrophy) (McDonald et al 2010). It is recommended that heart rate should be monitored consistently both at rest and during the walk when using the 6MWT (Verschuren crotamiton et al 2011). This might help differentiate whether low scores are because the child was more or less prepared psychologically to complete a 6MWT, or because the child was able to move with less ease and, thus, had higher physiological strain. The only requirements

are a 15–20 metre corridor or exercise room, four cones, measuring tape, a stop-watch, a heart rate monitor, and written instructions for the encouragements. In children, varying associations have been reported between age, height, weight, and gender, and 6MWT distance. Several studies have reported reference values from healthy children from different geographic regions, Europe, Asia, Africa, and North America (Ben Saad et al 2009, Geiger et al 2007, Klepper and Muir, 2011, Lammers et al 2007, Li et al 2007), making it possible to determine the predicted 6MWT distance for individual patients. Reliability: Reproducibility testing has shown good reliability (ICC 0.96 to 0.98) for children with or without chronic disease.