References
- Maltais F, Decramer M, Casaburi R, et al. An official american thoracic society/european respiratory society statement: update on limb muscle dysfunction in chronic obstructive pulmonary disease. Am J Respir Crit Care Med. 2014;189:e15–6.
- Laviolette L, Laveneziana P, ERS Research Seminar Faculty. Dyspnoea: a multidimensional and multidisciplinary approach. Eur Respir J. 2014;43:1750–1762.
- Ottenheijm CA, Heunks LM, Dekhuijzen RP. Diaphragm adaptations in patients with COPD. Respir Res. 2008;9: 12-9921-9-12.
- Charususin N, Gosselink R, Decramer M, et al. Inspiratory muscle training protocol for patients with chronic obstructive pulmonary disease (IMTCO study): a multicentre randomised controlled trial. BMJ Open. 2013;3:e003101.
- Gosselink R, De Vos J, van den Heuvel SP, et al. Impact of inspiratory muscle training in patients with COPD: what is the evidence? Eur Respir J. 2011;37:416–425.
- GlaxoSmithKline group of companies. COPDAssessment Test. updated 2016 Jan 17. Available from: http://www.catestonline.org/
- Bestall JC, Paul EA, Garrod R, et al. Usefulness of the medical research council (MRC) dyspnoea scale as a measure of disability in patients with chronic obstructive pulmonary disease. Thorax. 1999;54:581–586.
- Harik-Khan RI, Wise RA, Fozard JL. Determinants of maximal inspiratory pressure. the baltimore longitudinal study of aging. Am J Respir Crit Care Med. 1998;158:1459–1464.
- Arnold CM, Warkentin KD, Chilibeck PD, et al. The reliability and validity of handheld dynamometry for the measurement of lower-extremity muscle strength in older adults. J Strength Cond Res. 2010;24:815–824.
- Holland AE, Spruit MA, Troosters T, et al. An official european respiratory society/american thoracic society technical standard: field walking tests in chronic respiratory disease. Eur Respir J. 2014;44:1428–1446.
- Jones CJ, Rikli RE, Beam WC. A 30-s chair-stand test as a measure of lower body strength in community-residing older adults. Res Q Exerc Sport. 1999;70:113–119.
- Evans JA, Whitelaw WA. The assessment of maximal respiratory mouth pressures in adults. Respir Care. 2009;54:1348–1359.
- Bohannon RW. Reference values for knee extension strength obtained by hand-held dynamometry from apparently healthy older adults: a meta-analysis. J Frailty Aging. 2017;6:199–201.
- Singer J, Yelin EH, Katz PP, et al. Respiratory and skeletal muscle strength in chronic obstructive pulmonary disease: impact on exercise capacity and lower extremity function. J Cardiopulm Rehabil Prev. 2011;31:111–119.
- Gosselink R, Troosters T, Decramer M. Exercise training in COPD patients: the basic questions. Eur Respir J. 1997;10:2884–2891.
- Ploutz-Snyder LL, Manini T, Ploutz-Snyder RJ, et al. Functionally relevant thresholds of quadriceps femoris strength. J Gerontol A Biol Sci Med Sci. 2002;57:B144–B52.
- Begin P, Grassino A. Inspiratory muscle dysfunction and chronic hypercapnia in chronic obstructive pulmonary disease. Am Rev Respir Dis. 1991;143:905–912.
- Charususin N, Gosselink R, Decramer M, et al. Randomised controlled trial of adjunctive inspiratory muscle training for patients with COPD. Thorax. 2018;73:942–950.
- Beaumont M, Forget P, Couturaud F, et al. Effects of inspiratory muscle training in COPD patients: a systematic review and meta-analysis. Clin Respir J. 2018;12:2178–2188.
- Schultz K, Jelusic D, Wittmann M, et al. Inspiratory muscle training does not improve clinical outcomes in 3-week COPD rehabilitation: results from a randomised controlled trial. Eur Respir J. Print. 2018;51:1702000. 2018 Jan.