title: Could exercise be a new strategy to revert some patients with atrial fibrillation?
abstract: BACKGROUND
  This study is the result of the anecdotal observation that a number of patients with atrial fibrillation (AF) had noted reversion to sinus rhythm (SR) with exercise.We aimed to evaluate the potential role of exercise stress test (EST) for the reversion of AF.
  
  
  METHODS
  Patients with AF who were scheduled to undergo electrical cardioversion (DCR) underwent EST using a modified Bruce protocol.
  
  
  RESULTS
  Eighteen patients (16 male); aged 36-74 years (mean 58 years) were studied. Five patients (27.7%) had successful reversion with exercise (group 1). Thirteen patients remained in AF (group 2). No patient who failed to revert with exercise did so spontaneously before DCR 3 h to 7 months later (median 20 days). Comparison between group 1 and group 2 did not reveal any significant difference
  
  
  CONCLUSIONS
  This small preliminary study suggests that in some patients it may be possible to revert AF to SR with exercise and avoid DCR and concomitant general anaesthesia. The authors suggest that a larger multicentre randomized trial is warranted to confirm or refute these initial results and if correct identify those who might benefit.
authors.affiliation: Neuroscience Department, Barwon Health/The Geelong Hospital, Geelong, Victoria, Australia.
authors.forename: P
authors.initials: P
authors.lastname: Gates
authors.forename: S
authors.initials: S
authors.lastname: Al-Daher
authors.forename: D
authors.initials: D
authors.lastname: Ridley
authors.forename: A
authors.initials: A
authors.lastname: Black
mesh_terms: D000328:Adult; D000368:Aged; D001281:Atrial Fibrillation / Q000503:physiopathology* / Q000628:therapy*; D015444:Exercise / Q000502:physiology*; D005080:Exercise Test / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged