Maddocks, M., Nolan, CM., Man, WD-C., Polkey, MI., Hart, N., Gao, W., Rafferty, GF., Moxham, J. and Higginson, IJ. et al. (2016) 'Neuromuscular electrical stimulation to improve exercise capacity in patients with severe COPD: a randomised double-blind, placebo-controlled trial'. The Lancet Respiratory Medicine, 4 (1). pp. 27 - 36. ISSN: 2213-2600

Jones, SE., Kon, SSC., Canavan, JL., Patel, MS., Clark, AL., Nolan, CM., Polkey, MI. and Man, WD-C. et al. (2013) 'The five-repetition sit-to-stand test as a functional outcome measure in COPD'. Thorax, 68 (11). pp. 1015 - 1020. ISSN: 0040-6376