Just would like some advice on what is the best exercise for my back condition. Firstly my problem is if you can understand it is, in 1993 I had a CT scan I will go straight to the problem. At the LV4/5 level a moderate degree of central disc bulging is noted. The protrusion is causing a slight degree of anterior indentation on the dural sac and it’s at this level. A moderate degree of arthropathy is seen involving the facet joint at this level.
At the LV5/S1 level quite a prominent central disc protrusion is noted. It is causing some indentation on the dural sac and its contents here. No spinal stenosis is seen. No other lesion is demonstrated.
The rest where all normal, then I had another CT scan in 1998 whilst my back was not sore as I had to wait a few weeks before I had the scan, and it went as follows.
There is a small central disc protrusion at the level L4/5 and L5/S1 levels, both causing a mild depression upon the anterior aspect of the thecal sac. The exiting L3 L4 and L5 nerve roots have not been compromised. The facet joints are all normal in appearance without evidence of significant arthrosis.
Comment : Small central disc protrusions are noted at L4/5 and L5/S1 levels. There has been no significant interval change since the last CT examination.
Now my back problem I guess is not too bad as only get a really sore back maybe once every 2 years, here and there you get your little sore back as most people do due to hard work etc etc. I call a bad back when you can’t sit properly when you sneeze it is painful and basically every slight movement is very painful. I had this happen to me a few weeks ago, after what seemed like a few years my back was perfect. And every time it goes on me it is something simple like sitting there and getting up and bang it is gone. Example I was on my computer a few weeks ago playing games about 30 min into I just leant over to one side ever so slightly and bang it was like a knife went into me. I had to get off and I was in bad pain for 3 days after that it gradually goes away within a week or so.
Now I was not to happy as I said perfect for a few years and something so simple as sitting makes my back go, you would think lifting or hard work would make it go but its always something simple like sitting or twisting. Anyway I was surfing the net about what exercises are good for and what is not, I have been doing abdominal exercises for a number of years, maybe thats why I hardly get a bad back anymore, and I have nice six pack going to

So could you please give me some advice is it ok to continue these exercises, or any better exercises out there that would help me, thanks.