Methods	Parallel group RCT
Participants	Aetiology of CHF both CHD (75%) and DCM. Boston HF criteria and LVEF <45%. 54 patients randomised, 71.5% men, mean age 64 years
Interventions	Aerobic exercise - 16 weeks interval training on a bike ergometer - 90 seconds exercise at 80% VO2 max, 30 seconds rest. Exercise time gradually increased from 15 minutes total 2 times a week to 45 minutes 3 times a week from week 7. Mean compliance 74.5%. Follow-up assessment at end of intervention period of 16 weeks
Outcomes	VO2max Peak workload (Watts)
Notes

AF: atrial fibrillation

CHF: chronic heart failure

CHD: coronary heart disease

DCM : dilated cardiomyopathy

HR: heart rate

HRQoL: health related quality of life

LVEF: left ventricular ejection fraction

Mins: minutes

NYHA: New York Heart Association classification

QoL: quality of life

RCT : randomised controlled trial

VO2max: peak oxygen uptake