Ramos JS, Dalleck LC, Tjonna AE, et al. The impact of high-intensity interval training versus moderate-intensity continuous training on vascular function: a systematic review and meta-analysis. Sports Med 2015;45:679-692.

Rector TS, Kubo SH, Cohn JN. Patients self-assessment of congestive heart failure: content, reliability and validity of a new measure, The Minnesota Living with Heart Failure Questionnaire. Heart Failure 1987;3:198-209.

Redeker NS. Sleep disturbance in people with heart failure: implications for self-care. J Cardiovasc Nurs 2008;23;231-238.

Richardson LG. Psychosocial issues in patients with congestive heart failure. Progress in Cardiovascular Nursing 2003;18:19-27.

Rich MW, Beckham V, Wittenberg C, et al. A multidisciplinary intervention to prevent the readmission of elderly patients with congestive heart failure. New Eng J Med 1995;333:1190-1195.

Roberts HC, Denison HJ, Martin HJ, et al. A review of the measurement of grip strength in clinical and epidemiological studies: towards a standardised approach. Age Ageing 2011;40:423-429.

Robicsek F, Fokin A, Cook J, et al. Sternal instability after midline sternotomy. Thorac Cardiovasc Surg 2000;48:1-8.

Rognmo Ø, Hetland E, Helgerud J, et al. High intensity aerobic interval exercise is superior to moderate intensity exercise for increasing aeorbic capacity in patients with coronary artery disease. Eur J Cardiovasc Prev Rehabil 2004;11:216-222.

Rognmo Ø, Moholdt T, Bakken H, et al. Cardiovascular risk of high- versus moderate-intensity aerobic exercise in coronary heart disease patients. Circulation 2012;126:1436-1440.

Rollnick S, Miller W, Butler C. Motivational interviewing in health care: helping patients change behaviour. New York: Guilford Press. 2008.