output publications or other works Acute effect of aerobic exercise on brain-derived neurotrophic factor levels in patients with chronic heart failure Conference Poster Effect of exercise training with consideration of potential moderating variables in patients with atrial fibrillation a systematic review and meta-analysis Conference Poster Exergaming system for promoting hospital early mobilisation and disease knowledge in heart failure patients: HEFMOB development and usability assessment study Conference Poster Validity of a non-linear heart rate variability index for intensity threshold determination in chronic heart failure patients Conference Poster