I wish you well going forward. Thanks for your response.
Good to hear you increased your EF so much. Good job.
If you don't have any heart muscle damage, akinesis, or heart walls aren't abnormally thickened, etc., exercise could help increase your heart contractions; it really depends on the underlying cause for the low EF.
Before engaging it any serious exercise regimen, you should inform your doctor and consult for his or her recommendations. I increased my EF 29% 6 years to 59% currently with medication, exercis and proper diet, etc.
Thanks for the question and if you have any followup questions you are welcome to respond. Take care.