What do systematic reviews say?

Exercise vs no exercise at longest available follow‐up

• Exercise‐based cardiac rehabilitation for adult patients with an implantable cardioverter defibrillator 2019 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 196 participants
  Very low

Exercise vs no exercise

Exercise showed no clear difference in ICD, antitachycardia pacing ( compared with no exercise at the end of the intervention (moderate certainty).

• Exercise‐based cardiac rehabilitation for adult patients with an implantable cardioverter defibrillator 2019 · Cochrane Headline outcomes only
  RR 1.26 [0.84, 1.9]
  2 studies · 356 participants
  Moderate