Hi...I have not had this surgery and would suggest u speak with ur Drs in this regard as they know what was done and what u should be capable of doing,....
I wish I knew more, but mayb someone with first hand experience with this surgery will post a reply....
Hi there,
I had my Nissen Fundo on the 8th of Feb. 2012. I had a neck-fusion done May 2011 and thus have a lot of restrictions and have not attempted any exercises for that matter, so I can not tell you out of experience what you should or should not do. But I was told that at 8-12 weeks post-op Nissen Fundo you can resume normal activities and that includes exercises/Golf, etc.
You should not have any restrictions on ab training. Just monitor your heart rate and BP and if you experience any pain or discomfort, then stop, try again at a later stage or consult a Physio or even your Surgeon for a more detailed program.
All the best,